| Jobsite Name | City | State |
|---|---|---|
| 3M | CLEVELAND | OH |
| 3-M | CLEVELAND | OH |
| A & I COMPANY | MARIETTA | OH |
| A E ANDERSON | NEW BOSTON | OH |
| A E ANDERSON | NEW RICHMOND | OH |
| A P GREEN SERVICES | TWINSBURG | OH |
| A T & T CO. | MEDINA | OH |
| A T & T CO. | PORTSMOUTH | OH |
| A T & T CO. | SANDUSKY | OH |
| A. & P. Tea Company | Ironton | OH |
| A. E. STALEY MANUFACTURING CO. | GRAND RIVER | OH |
| A. E. STALEY MANUFACTURING CO. | PAINESVILLE | OH |
| A. GOTTLIEB CONTAINER | CINCINNATI | OH |
| A. H. PUGH PRINTING COMPANY | CINCINNATI | OH |
| A. Shulman Company | Akron | OH |
| A.C. HUMKO | COLUMBUS | OH |
| A.C. WILLIAMS | RAVENNA | OH |
| A.E. BURKHARDT & COMPANY | CINCINNATI | OH |
| A.E. STALEY MANUFACTURING COMPANY | DECATUR | OH |
| A.E. STALEY MANUFACTURING COMPANY | PAINESVILLE | OH |
| A.I. RESEARCH | NEWARK | OH |
| A.I. ROOT COMPANY | MEDINA | OH |
| A.J. PHIPPS | CANTON | OH |
| A.K. PROPERTY CORPORATION | WOOSTER | OH |
| A.K. PROPERTY CORPORATION | CANTON | OH |
| A.M. BYERS COMPANY | GIRARD | OH |
| A.M. HIGLEY CORP | CLEVELAND | OH |
| A.O. SMITH | TIPP CITY | OH |
| A.O. SMITH CORP | TIPP CITY | OH |
| A.P. GREEN FIRE BRICK COMPANY | LIMA | OH |
| A.P. GREEN FIRE BRICK COMPANY | SANDUSKY | OH |
| A.P. GREEN FIRE BRICK COMPANY | TOLEDO | OH |
| A.P. GREEN FIRE BRICK COMPANY OF MICHIGAN | CANTON | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | COLUMBUS | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | NORWOOD | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | TOLEDO | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | CLEVELAND | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | CANTON | OH |
| A.P. GREEN FIRE BRICK COMPANY OF OHIO | CINCINNATI | OH |
| A.P. GREEN REFRACTORIES COMPANY | TOLEDO | OH |
| A.P. GREEN REFRACTORIES COMPANY | COLUMBUS | OH |
| A.P. GREEN REFRACTORIES COMPANY | CANTON | OH |
| A.P. GREEN REFRACTORIES COMPANY | CINCINNATI | OH |
| A.P. GREEN REFRACTORIES COMPANY | INDEPENDENCE | OH |
| A.P. GREEN REFRACTORIES COMPANY OF OHIO | CANTON | OH |
| A.P. GREEN REFRACTORIES COMPANY OF OHIO | CLEVELAND | OH |
| A.P. GREEN REFRACTORIES COMPANY OF OHIO | COLUMBUS | OH |
| A.P. GREEN SERVICES DIVISION | INDEPENDENCE | OH |
| A.P. GREEN SERVICES DIVISION | CINCINNATI | OH |
| A.P.I. INSTRUMENT | CHESTERLAND | OH |
| A.S. TAFT POWER BUILDING | CINCINNATI | OH |
| A.W. HINCHCLIFF LUMBER CO | STRONGSVILLE | OH |
| ABB AUTOMATION, INCORPORATED | WICKLIFFE | OH |
| Abex | Elyria | OH |
| ABEX COMPANY ELECTRO, ALLOYS DIVISION | ELYRIA | OH |
| ABEX CORPORATION | CLEVELAND | OH |
| ABEX CORPORATION | BEDFORD | OH |
| Abex Foundry | Lorain | OH |
| ABITEC CORPORATION | COLUMBUS | OH |
| ACACIA HEAT | CLEVELAND | OH |
| ACANDS, INC. | HURON | OH |
| ACANDS, INC. | TOLEDO | OH |
| ACANDS, INC. | CLEVELAND | OH |
| ACANDS, INC. | CINCINNATI | OH |
| ACANDS, INC. | COLUMBUS | OH |
| ACANDS, INC. | BOWLING GREEN | OH |
| ACCRO CAST CORP | DAYTON | OH |
| ACE METAL | CLEVELAND | OH |
| Acklin Stamping Company | Toledo | OH |
| ACKLIN STAMPING COMPANY PLANT | TOLEDO | OH |
| ACME MACHINERY COMPANY | CLEVELAND | OH |
| ACME POWER COMPANY – ACME POWER PLANT | TOLEDO | OH |
| ACME POWER PLANT | TOLEDO | OH |
| ACME SASH & DOOR COMPANY | CINCINNATI | OH |
| Acme Stove & Repair | Cleveland | OH |
| ACME WET WASH LAUNDRY | CANTON | OH |
| ACOUSTICAL DEPARTMENT, 10223 MILES AVE. | CLEVELAND | OH |
| ADAMS SCHOOL | YOUNGSTOWN | OH |
| ADAMSON UNITED COMPANY | AKRON | OH |
| ADDRESSOGRAPH MULTIGRAPH CORP. | CLEVELAND | OH |
| ADDRESSOGRAPH-MULTIGRAPH CORPORATION | CLEVELAND | OH |
| ADDRESSOGRAPH-MULTIGRAPH CORPORATION | EUCLID | OH |
| ADMIRAL KING HIGH SCHOOL | LORAIN | OH |
| ADRIAN L. WALLICK | COLUMBUS | OH |
| ADVANCE BAG COMPANY | MIDDLETOWN | OH |
| ADVANCE DRUM & BARREL | CLEVELAND | OH |
| ADVANCE SALES | CLEVELAND | OH |
| ADVANCE TEC. | CLEVELAND | OH |
| AEP Beverly Power Plant (a/k/a Muskingham River Power Station; a/ic/a Ohio Power) | Beverly | OH |
| AEP Gavin Power Station (Cheshire Power Station) | Cheshire | OH |
| AEP Kyger Creek Power Plant | Cheshire | OH |
| AERO PRODUCTS | SANDUSKY | OH |
| AERODYN CO. | MEDINA | OH |
| AERONAUTICS | CLEVELAND | OH |
| AERONCA INCORPORATED | MIDDLETOWN | OH |
| AERONICA MANUFACTURING | MIDDLETOWN | OH |
| AEROPRODUCTS DIVISION GENERAL MOTORS CORPORATION | VANDALIA | OH |
| AEROQUIP REPUBLIC RUBBER | YOUNGSTOWN | OH |
| AEROSPACE | CLEVELAND | OH |
| AETNA EXPLOSIVES COMPANY, INCORPORATED | GORS | OH |
| AETNA IRON AND STEEL COMPANY | BRIDGEPORT | OH |
| AETNA PAPER COMPANY | DAYTON | OH |
| AETNA PAPER COMPANY DIVISION HOWARD PAPER MILLS | DAYTON | OH |
| AETNA RUBBER COMPANY | ASHTABULA | OH |
| AETNA RUBBER COMPANY | SANDUSKY | OH |
| Aetna Rubber Company | Cleveland | OH |
| AETNA STANDARD IRON & STEEL COMPANY | BRIDGEPORT | OH |
| AETNA STANDARD IRON & STEEL COMPANY | MINGO JUNCTION | OH |
| AETNA WELDING | CLEVELAND | OH |
| Air Injector Corp. | Cleveland | OH |
| AIR NATIONAL GUARD FACILITIES – MODIFICATION BLDG. 932 LOCKBOURNE A | COLUMBUS | OH |
| Air Nitrate Plant | Ancor | OH |
| Air Nitrate Plant | Toledo | OH |
| AIR NITRATES CORPORATION | CINCINNATI | OH |
| AIR ROUTE TRAFFIC CONTROL CENTER – EAST LORAIN STREET | OBERLIN | OH |
| AIR SERVICE COMMAND | FAIRFIELD | OH |
| AIRCO | SANDUSKY | OH |
| AIRCO * | CLEVELAND | OH |
| AIRCO PLASTICS | SANDUSKY | OH |
| AIRCO PLASTICS PROD | SANDUSKY | OH |
| AIRCO WELDING PRODUCTS | CLEVELAND | OH |
| AIRCRAFT BRAKING SYSTEMS | AKRON | OH |
| AJAX MAGNATHERMIC | WARREN | OH |
| Ajax Magnethermic Corp. | Warren | OH |
| AJAX MANAGEMENT | WARREN | OH |
| AJAX MANUFACTURING | EUCLID | OH |
| AK STEEL | MIDDLETOWN | OH |
| AK STEEL CORPORATION | ZANESVILLE | OH |
| AK STEEL CORPORATION | MIDDLETOWN | OH |
| AK STEEL CORPORATION, BOILER HOUSE #2 | MIDDLETOWN | OH |
| AKRON AND CUYAHOGA FALLS R.I. COMPANY | AKRON | OH |
| AKRON AND CUYAHOGA FALLS R.I. COMPANY | CUYAHOGA FALLS | OH |
| AKRON BREWING COMPANY | AKRON | OH |
| Akron Childrens Hospital | Akron | OH |
| AKRON CITY HOSPITAL | AKRON | OH |
| AKRON CITY HOSPITAL, PERMIT 11032 | AKRON | OH |
| AKRON COAL COMPANY | LORE CITY | OH |
| AKRON ELECTRIC COMPANY – ELECTRIC PLANT | AKRON | OH |
| AKRON GAS COMPANY – GAS PLANT | AKRON | OH |
| Akron Gasket Co | Tallmadge | OH |
| AKRON GENERAL HEALTH | AKRON | OH |
| AKRON GENERAL HOSPITAL | AKRON | OH |
| AKRON GENERAL HOSPITAL – 400 WABASH AVENUE | AKRON | OH |
| AKRON GENERAL HOSPITAL, 400 WABASH AVE. | AKRON | OH |
| AKRON HEATING AND VENTILATING COMPANY | AKRON | OH |
| AKRON IRON COMPANY | AKRON | OH |
| AKRON MILLING MINING AND MANUFACTURING COMPANY | AKRON | OH |
| AKRON OXYGEN | WILLOUGHBY | OH |
| AKRON RUBBER RECLAIMING COMPANY | BARBERTON | OH |
| AKRON RUBBER RECLAIMING COMPANY | AKRON | OH |
| AKRON SAFETY BUILDING, BOWERY ST. | AKRON | OH |
| AKRON STANDARD | AKRON | OH |
| AKRON STANDARD | BARBERTON | OH |
| Akron Standard Mold | Akron | OH |
| AKRON STEAM HEATING COMPANY | AKRON | OH |
| AKRON STEEL TREATING | AKRON | OH |
| Akron Steel Treating Plant | Akron | OH |
| AKRON STREET RAILWAY AND ILLUMINATING COMPANY | AKRON | OH |
| AKRON THERMAL | AKRON | OH |
| AKRON TOWEL SUPPLY COMPANY | AKRON | OH |
| AKRON UNIV WOMENS DORM | AKRON | OH |
| AKRON UNIVERSITY, SOMMER ST. | AKRON | OH |
| AKRON UNIVERSITY, STUDENT CENTER | AKRON | OH |
| AKRON WATER WORKS COMPANY – PUMPING STATION | AKRON | OH |
| AKRON, BEDFORD AND CLEVELAND RAILWAY COMPANY | CLEVELAND | OH |
| AKRON, BEDFORD AND CLEVELAND RAILWAY COMPANY | BEDFORD | OH |
| AKRON, BEDFORD AND CLEVELAND RAILWAY COMPANY | CUYAHOGA FALLS | OH |
| AKWELL CORPORATION | AKRON | OH |
| Akzo Chemical | Gallipolis | OH |
| ALBERT BESS | HAMILTON | OH |
| ALBERT KAHN ASSOCIATES, INCORPORATED | SANDUSKY | OH |
| ALBERT R. HOSTETTER COMPANY | DAYTON | OH |
| ALBRECHT TOOL | CLEVELAND | OH |
| ALCOA | Cleveland | OH |
| Alcoa | Newburgh Hts | OH |
| Alcoa | Brookpark | OH |
| ALCOA | CHILLICOTHE | OH |
| Alcoa (F/K/A Reynolds Metals) | Cleveland | OH |
| Alcoa Aluminum | Cleveland | OH |
| ALCOA COMPANY | CLEVELAND | OH |
| ALCOA, INCORPORATED | CLEVELAND | OH |
| ALDON PRODUCTS | CLEVELAND | OH |
| ALEXCO INC. | NILES | OH |
| ALFRED A. POPE BUILDING | CLEVELAND | OH |
| ALKALI RUBBER COMPANY | AKRON | OH |
| All Shapes Steel Products Company | Warren | OH |
| All Steel Inc. | Cleveland | OH |
| ALLEGHENY LUDLUM STEEL | WATERVILLE | OH |
| ALLEN AND WHEELER COMPANY | ELDEAN | OH |
| ALLEN COUNTY INSTITUTION POWER PLANT | LIMA | OH |
| Allen Foundry & Machine | Lancaster | OH |
| ALLEN PACKING | ROCKY RIVER | OH |
| ALLEN PRODUCTS COMPANY, INCORPORATED | CLEVELAND | OH |
| ALLEN REFRACTORIES CO | CANAL WINCHESTER | OH |
| ALLEN REFRACTORIES CO. | CANAL WINCHESTER | OH |
| ALLEN REFRACTORIES CO. | COLUMBUS | OH |
| ALLEN SCHOOL | CANTON | OH |
| ALLIANCE | WARE ALLIANCE | OH |
| ALLIANCE COLD STORAGE AND PACKING COMPANY | ALLIANCE | OH |
| ALLIANCE GAS AND POWER COMPANY – POWER PLANT | ALLIANCE | OH |
| ALLIANCE RESEARCH CENTER | ALLIANCE | OH |
| ALLIANCE TUBULAR PRODUCTS COMPANY | ALLIANCE | OH |
| ALLIED BOILER | CLEVELAND | OH |
| Allied Chemical | Ironton | OH |
| Allied Chemical | Toledo | OH |
| Allied Chemical | South Point | OH |
| ALLIED CHEMICAL | PAINESVILLE | OH |
| Allied Chemical | Southpoint | OH |
| ALLIED CHEMICAL & DYE CORP – SEMET SOLVAY CO | IRONTON | OH |
| ALLIED CHEMICAL & DYE CORP. | TOLEDO | OH |
| ALLIED CHEMICAL & DYE CORP. – BARRETT DIVISION | IRONTON | OH |
| ALLIED CHEMICAL & DYE CORP. – BARRETT DIVISION | TOLEDO | OH |
| ALLIED CHEMICAL & DYE CORP. – NITROGEN DIVISION | SOUTH POINT | OH |
| ALLIED CHEMICAL & DYE CORPORATION | TRONTON | OH |
| ALLIED CHEMICAL & DYE CORPORATION | IRONTON | OH |
| ALLIED CHEMICAL & DYE CORPORATION BARRETT DIVISION | TOLEDO | OH |
| Allied Chemical (a/k/a Ironton Coke/McLouth Steel) | Ironton | OH |
| ALLIED CHEMICAL * | YOUNGSTOWN | OH |
| ALLIED CHEMICAL COMPANY | YOUNGSTOWN | OH |
| ALLIED CHEMICAL COMPANY | PAINESVILLE | OH |
| Allied Chemical Corp. | South Point | OH |
| ALLIED CHEMICAL CORP. | PAINESVILLE | OH |
| ALLIED CHEMICAL CORP. | TOLEDO | OH |
| ALLIED CHEMICAL CORP. | IRONTON | OH |
| ALLIED CHEMICAL CORP. – REPUBLIC STEEL CORPORATION | WARREN | OH |
| ALLIED CHEMICAL CORPORATION | YOUNGSTOWN | OH |
| ALLIED CHEMICAL CORPORATION | SOUTH POINT | OH |
| ALLIED CHEMICAL CORPORATION | FOSTORIA | OH |
| ALLIED CHEMICAL CORPORATION – 2829 GLENDALE | TOLEDO | OH |
| ALLIED CHEMICAL CORPORATION, 2829 GLENDALE | TOLEDO | OH |
| Allied Chemical Plant | Southpoint | OH |
| Allied Egry Business Systems | Dayton | OH |
| ALLIED ENGINEERING COMPANY | CLEVELAND | OH |
| ALLIED RUBBER & MICE | CLEVELAND | OH |
| Allied Service | Marietta | OH |
| ALLIED SIGNAL, INCORPORATED | FOSTORIA | OH |
| ALLIS – CHALMERS | CLEVELAND | OH |
| ALLIS CHALMERS MANUFACTURING COMPANY | NORWOOD | OH |
| ALLIS CHALMERS MANUFACTURING COMPANY | EAST NORWOOD | OH |
| ALLIS CHALMERS MANUFACTURING COMPANY, NORWOOD PLANT | CINCINNATI | OH |
| ALLOY ENGINEERING | BEREA | OH |
| ALLOY INDUSTRY | BEREA | OH |
| ALLOYS & CHEMICAL MANUFACTURING COMPANY | CLEVELAND | OH |
| ALMS AND DOEPKE DRY GOODS COMPANY | CINCINNATI | OH |
| Alpha Portland Cement | Ironton | OH |
| ALPHA PORTLAND CEMENT CO. | IRONTON | OH |
| ALPHA PORTLAND CEMENT COMPANY | IRONTON | OH |
| ALTIVITY PACKAGING | MIDDLETOWN | OH |
| ALTON COMPANY | CLEVELAND | OH |
| ALUM. MAGNESIUM (WHW) | SANDUSKY | OH |
| Aluminum Billets Inc | Niles | OH |
| ALUMINUM CO. OF AMERICA | CLEVELAND | OH |
| Aluminum Coating | Cleveland | OH |
| ALUMINUM COMPANY OF AMERICA (ALCOA) | CLEVELAND | OH |
| ALUMINUM CORPORATION | CLEVELAND | OH |
| ALUMINUM CORPORATION OF AMERICA | CLEVELAND | OH |
| ALUMINUM SMELTING | MAPLE HEIGHTS | OH |
| ALUMINUM SMELTING | CLEVELAND | OH |
| ALUMINUM SMELTING & REFINING COMPANY | CLEVELAND | OH |
| ALUMIWAL, INCORPORATED, PLANT NO. 1 | GNADENHUTTEN | OH |
| ALUMIWAL, INCORPORATED, PLANT NO. 2 | GNADENHUTTEN | OH |
| AMAC ENTERPRISES | CLEVELAND | OH |
| AMANA REFRIGERATION | AMANA | OH |
| AMAX SPECIALTY | CLEVELAND | OH |
| Ambler Corp. | Toledo | OH |
| Amcast Industrial Corporation | Ironton | OH |
| AMERICAN ALUMINUM COMPANY | BARBERTON | OH |
| AMERICAN ALUMINUM COMPANY | NEW PORTAGE | OH |
| American Amusement Company, Lyceum Theatre | OH | |
| AMERICAN ART WORKS, INCORPORATED | COSHOCTON | OH |
| AMERICAN BALL BEARING COMPANY | CLEVELAND | OH |
| AMERICAN BITUMALS & ASPHALT | COLUMBIA PARK | OH |
| AMERICAN BITUMALS & ASPHALT CO. | BELPRE | OH |
| AMERICAN BITUMALS CORP | NORTH BEND | OH |
| AMERICAN BITUMINUS & ASPHALT | CINCINNATI | OH |
| AMERICAN BOOK COMPANY | CINCINNATI | OH |
| AMERICAN BOTTLE COMPANY | NEWARK | OH |
| AMERICAN BOX COMPANY | CLEVELAND | OH |
| AMERICAN BRAKE SHOE CO. | ELYRIA | OH |
| AMERICAN BRAKE SHOE COMPANY | ELYRIA | OH |
| AMERICAN BRAZING PLANT | WILLOUGHBY | OH |
| American Bridge | Lorain | OH |
| AMERICAN CAN COMPANY | TOLEDO | OH |
| AMERICAN CANCER SOCIETY | DOVER | OH |
| AMERICAN CEREAL COMPANY | AKRON | OH |
| AMERICAN CLAY MACHINERY COMPANY | BUCYRUS | OH |
| AMERICAN COATING MILLS, INCORPORATED | MIDDLETOWN | OH |
| AMERICAN COOK COMPANY | CINCINNATI | OH |
| AMERICAN CRAYON COMPANY | SANDUSKY | OH |
| American Cyanamid | Marietta | OH |
| AMERICAN CYANAMID COMPANY | MARIETTA | OH |
| AMERICAN CYANAMID COMPANY | HAMILTON | OH |
| AMERICAN DIAMALT COMPANY | CINCINNATI | OH |
| AMERICAN DIAMALT COMPANY | RIVERSIDE (CINCINNATI) | OH |
| AMERICAN ELECTRIC POWER – Muskingum River Power Plant | Beverly | OH |
| AMERICAN ELECTRIC POWER – MUSKINGUM RIVER POWER PLANT – GENERATOR 5 | WATERFORD | OH |
| AMERICAN ELECTRIC POWER CO. – JAMES M. GAVIN POWER PLANT | CHESHIRE | OH |
| American Electric Power Company – Conesville Power Plant | Conesville | OH |
| AMERICAN ENCAUSTIC TILING COMPANY | ZANESVILLE | OH |
| AMERICAN ENVELOPE COMPANY | WEST CARROLLTON | OH |
| AMERICAN FIBERBOARD | MIDDLETOWN | OH |
| AMERICAN FIRE BRICK CO. | CLEVELAND | OH |
| AMERICAN FORGE AND MACHINE COMPANY | CANTON | OH |
| AMERICAN FORK AND HOE COMPANY | ASHTABULA | OH |
| AMERICAN FORK AND HOE COMPANY | CLEVELAND | OH |
| AMERICAN FORK AND HOE COMPANY | GENEVA | OH |
| AMERICAN GREETINGS INCORPORATED | CLEVELAND | OH |
| AMERICAN HANDLING EQUIP. | CLEVELAND | OH |
| American Hard Rubber Company | Akron | OH |
| AMERICAN HOIST | CLEVELAND | OH |
| AMERICAN INSURANCE UNION BUILDING | COLUMBUS | OH |
| American Laundry Machine Company | Norwood | OH |
| AMERICAN LOUISANA PIPE LINE – COMPRESSOR STATION | DEFIANCE | OH |
| AMERICAN LOUISIANA PIPE LINE CO. | DEFIANCE | OH |
| American Louisiana Pipe Line Company – Compressor Station | Defiance | OH |
| American Lubricants Co. | Dayton | OH |
| AMERICAN MALLEABLE | MARION | OH |
| AMERICAN MALLEABLE CASTING COMPANY | MARION | OH |
| AMERICAN MARIETTA CO | MARIETTA | OH |
| AMERICAN METAL | CAMBRIDGE | OH |
| AMERICAN MINERAL SPIRITS CO | TOLEDO | OH |
| AMERICAN MINERAL SPIRITS CO. | TOLEDO | OH |
| AMERICAN MINERAL SPIRITS COMPANY | TOLEDO | OH |
| AMERICAN MONARCH | CLEVELAND | OH |
| AMERICAN MOTORS | TOLEDO | OH |
| AMERICAN MOTORS CORPORATION | TOLEDO | OH |
| AMERICAN MOTORS CORPORATION JEEP DIVISION | TOLEDO | OH |
| AMERICAN MUNICIPAL POWER OHIO – RICHARD H GORSUCH GENERATING STATION | MARIETTA | OH |
| AMERICAN MUNICIPAL POWER, GORSUCH STATION | MARIETTA | OH |
| AMERICAN NUT AND BOLT COMPANY | CLEVELAND | OH |
| AMERICAN OAK LEATHER COMPANY | CINCINNATI | OH |
| AMERICAN PAD AND TEXTILE COMPANY | GREENFIELD | OH |
| AMERICAN PORTLAND CEMENT COMPANY | CINCINNATI | OH |
| AMERICAN RADIATOR AND STANDARD SANITARY CORPORATION | ELYRIA | OH |
| AMERICAN RADIATOR AND STANDARD SANITARY CORPORATION | TIFFIN | OH |
| AMERICAN ROLL & FOUNDRY COMPANY | CANTON | OH |
| AMERICAN ROLLING MILL COMPANY | HAMILTON | OH |
| AMERICAN ROLLING MILL COMPANY | MIDDLETOWN | OH |
| AMERICAN ROLLING MILL COMPANY | SOUTH COLUMBUS | OH |
| AMERICAN ROLLING MILL COMPANY | ZANESVILLE | OH |
| AMERICAN ROLLING MILL COMPANY | MIDDLETON | OH |
| AMERICAN RUBBER AND TIRE COMPANY | AKRON | OH |
| AMERICAN SEEDING MACHINE COMPANY | SPRINGFIELD | OH |
| AMERICAN SEWER PIPE COMPANY | BARBERTON | OH |
| AMERICAN SHEET & TIN PLATE CO – CAMBRIDGE WORKS | CAMBRIDGE | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | CANTON | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | WELLSVILLE | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | NEW PHILADELPHIA | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | CANAL DOVER | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | MARTINS FERRY | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | CAMBRIDGE | OH |
| AMERICAN SHEET & TIN PLATE COMPANY | CLEVELAND | OH |
| AMERICAN SHEET AND TIN PLATE COMPANY | MARTINS FERRY | OH |
| AMERICAN SHEET AND TIN PLATE COMPANY | STRUTHERS | OH |
| AMERICAN SHEET AND TIN PLATE COMPANY | NILES | OH |
| AMERICAN SHEET STEEL COMPANY | BRIDGEPORT | OH |
| AMERICAN SHEET STEEL COMPANY | NILES | OH |
| AMERICAN SHIP | LORAIN | OH |
| AMERICAN SHIP BUILDERS | LORAIN | OH |
| AMERICAN SHIP BUILDING COMPANY | LORAIN | OH |
| AMERICAN SHIP BUILDING COMPANY | CLEVELAND | OH |
| AMERICAN SHIP BUILDING COMPANY | TOLEDO | OH |
| American Shipbuilding | Toledo | OH |
| AMERICAN SHIPBUILDING CO | LORAIN | OH |
| AMERICAN SHIPBUILDING CO | TOLEDO | OH |
| AMERICAN SHIPBUILDING CO. | CLEVELAND | OH |
| AMERICAN SHIPBUILDING CO. | LORAIN | OH |
| AMERICAN SHIPBUILDING CO. | TOLEDO | OH |
| American Shipbuilding Company | Cleveland And Lorain | OH |
| AMERICAN SHIPBUILDING CORP. | LORAIN | OH |
| AMERICAN SMELTING & REFINING COMPANY | COLUMBUS | OH |
| AMERICAN SPRING WIRE | CLEVELAND | OH |
| American Standard | Elyria | OH |
| AMERICAN STANDARD COMPANY PLANT | TIFFIN | OH |
| American Steel | Alliance | OH |
| AMERICAN STEEL | CANTON | OH |
| AMERICAN STEEL | MARION | OH |
| AMERICAN STEEL & WIRE | CLEVELAND | OH |
| AMERICAN STEEL & WIRE – CUYAHOGA WORKS | CLEVELAND | OH |
| American Steel & Wire Co. | Worchester | OH |
| AMERICAN STEEL & WIRE CO. – COKE WORKS | CLEVELAND \ NEWBURGH | OH |
| AMERICAN STEEL & WIRE COMPANY | CLEVELAND | OH |
| AMERICAN STEEL & WIRE CUYAHOGA WORKS | CLEVELAND | OH |
| AMERICAN STEEL AND WIRE COMPANY | CLEVELAND | OH |
| AMERICAN STEEL AND WIRE COMPANY | NEWBURG | OH |
| AMERICAN STEEL AND WIRE COMPANY | NEWBURGH | OH |
| AMERICAN STEEL CASTING FOUNDRIES COMPANY | ALLIANCE | OH |
| AMERICAN STEEL FOUNDRIES | ALLIANCE | OH |
| AMERICAN STEEL FOUNDRIES COMPANY | ALLIANCE | OH |
| AMERICAN STEEL FOUNDRY | ALLIANCE | OH |
| AMERICAN STEEL HOOP COMPANY | GIRARD | OH |
| AMERICAN STEEL HOOP COMPANY | YOUNGSTOWN | OH |
| AMERICAN STOVE COMPANY | CLEVELAND | OH |
| AMERICAN STOVE COMPANY | LORAIN | OH |
| AMERICAN STRAWBOARD COMPANY | LIMA | OH |
| AMERICAN STRAWBOARD COMPANY | CIRCLEVILLE | OH |
| AMERICAN STRAWBOARD COMPANY | BARBERTON | OH |
| AMERICAN STRUCTURAL PRODUCTS CO. | TOLEDO | OH |
| AMERICAN SUEDE SHOE COMPANY | TOLEDO | OH |
| AMERICAN TANK | CLEVELAND | OH |
| AMERICAN TOBACCO COMPANY | MIDDLETOWN | OH |
| AMERICAN TOBACCO COMPANY | MIDDLTETOWN | OH |
| AMERICAN TOOL WORKS COMPANY | CINCINNATI | OH |
| AMERICAN VISCOSE CORPORATION | MARIETTA | OH |
| AMERICAN WELDING | YOUNGSTOWN | OH |
| AMERICAN WELDING | WARREN | OH |
| AMERICAN WELDING & MANUFACTURING | WARREN | OH |
| AMERICAN WELDING & MANUFACTURING CO. | WARREN | OH |
| American Welding & Mfg. Co. | Niles | OH |
| American Welding & Mfg. Co. | Warren | OH |
| AMERICAN WELDLESS STEEL TUBE COMPANY | TOLEDO | OH |
| AMERICAN WIRE MILLS | CLEVELAND | OH |
| AMERICAN WORKS CORPORATION | CLEVELAND | OH |
| American Zinc Company | Columbus | OH |
| AMERICAN ZINC OXIDE | COLUMBUS | OH |
| AMERICAN ZINC OXIDE, SUBISDIARY OF AMERICAN ZINC, LEAD & SMELTING CO., WINDSOR AVE., C.A.& C. TRACKS | COLUMBUS | OH |
| Americhem | Cuyahuga Falls | OH |
| Amsco Solvents & Chemicals | Cincinnati | OH |
| Amweld Buildings Products | Niles | OH |
| ANACONDA INDUSTRIES, INC | GNADENHUTTEN | OH |
| ANCHOR HOCKING CORPORATION | LANCASTER | OH |
| Anchor Hocking Corporation – Plant 1 | Lancaster | OH |
| Anchor Hocking Glass | Lancaster | OH |
| ANCHOR HOCKING GLASS CO – PLANT NO 1 | LANCASTER | OH |
| ANCHOR HOCKING GLASS CORP. | LANCASTER | OH |
| ANCHOR HOCKING GLASS CORPORATION | LANCASTER | OH |
| Anchor Packing | Warren | OH |
| ANDERSON – IBEC | STRONGSVILLE | OH |
| ANDERSON MILLWRIGHT SERVICE, INC. | CLEVELAND | OH |
| Andrew Jergens Co. | Cincinnatti | OH |
| Andrew Jergens Company | Cincinnati | OH |
| Andrew Plocher | Dayton | OH |
| ANDREWS & HITCHCOCK IRON COMPANY | YOUNGSTOWN | OH |
| ANDREWS & HITCHCOCK IRON COMPANY | HUBBARD | OH |
| Andrews School for Girls | Willoughby | OH |
| ANDREWS SOAP COMPANY | CINCINNATI | OH |
| Angel Jay L | Toledo | OH |
| Angel Jay L Inc | Columbus | OH |
| Angel Jay L Inc | Toledo | OH |
| Anheuser Busch | Columbus | OH |
| Anheuser Busch Brewery | Columbus | OH |
| ANHEUSER BUSCH INCORPORATED | COLUMBUS | OH |
| ANHEUSER BUSCH, INCORPORATED | COLUMBUS | OH |
| ANHEUSER BUSCH, INCORPORATED | WORTHINGTON | OH |
| ANN ARBOR RAILROAD COMPANY | TOLEDO | OH |
| ANNA DEAN FARM | BARBERTON | OH |
| Annchurst Village | Westerville | OH |
| ANSTED AND BURK COMPANY | SPRINGFIELD | OH |
| Anunciation Church | Cleveland | OH |
| AP REFRACTORIES | TWINSBURG | OH |
| APEX ALUMINUM SMELTING | CUYAHOGA HTS | OH |
| APEX INTERNATIONAL | CLEVELAND | OH |
| APEX SMELT | CLEVELAND | OH |
| APEX SMELTING | CLEVELAND | OH |
| APEX SMELTING COMPANY | CLEVELAND | OH |
| Apex Welding | Cleveland | OH |
| Appco Inc. | Barberton | OH |
| APPLE CREEK HOSPITAL – BOILER ROOM | CANTON | OH |
| APPLE CREEK STATE HOSPITAL | CANTON | OH |
| APPLETON PAPERS, INCORPORATED | DAYTON | OH |
| APPLETON PAPERS, INCORPORATED | WEST CARROLLTON | OH |
| AQUARIUM – CINCINNATI | CINCINNATI | OH |
| ARBUCKLE, RYAN & COMPANY, INCORPORATED | ALLIANCE | OH |
| ARBUCKLE, RYAN & COMPANY, INCORPORATED | TOLEDO | OH |
| ARBUCKLE, RYAN & COMPANY, INCORPORATED | MASSILLON | OH |
| ARBYS | PARMA | OH |
| ARBY’S | CLEVELAND | OH |
| ARBY’S | BEDFORD HEIGHTS | OH |
| ARBY’S | PARMA HEIGHTS | OH |
| ARCADE BUILDING | WORTHINGTON | OH |
| ARCHER DANIELS MIDLAND CO. | ASHTABULA | OH |
| ARCHER DANIELS MIDLAND CO. – CHEMICAL PRODUCTS DIVISION | ASHTABULA | OH |
| ARCO | CLEVELAND | OH |
| Aristech | Haverhill | OH |
| Aristech / USS Chemical | Haverhill | OH |
| ARISTECH CHEMICAL CORPORATION | IRONTON | OH |
| ARISTECH CHEMICAL CORPORATION | HAVERHILL | OH |
| ARISTOCRAFT, INC. | CINCINNATI | OH |
| ARKVIEW FEDERAL SAVINGS & LOAN CO | SHAKER HEIGHTS | OH |
| ARLINGTON JUNIOR HIGH SCHOOL | ARLINGTON | OH |
| ARMATURE COIL | CLEVELAND | OH |
| ARMCO | ASHLAND | OH |
| ARMCO – AIR CONDITIONING | MIDDLETOWN | OH |
| ARMCO – ANNEAUNG | MIDDLETOWN | OH |
| ARMCO – HOT STRIP MILL – LEFFERSON ROAD | MIDDLETOWN | OH |
| ARMCO – PROJECT 600 | MIDDLETOWN | OH |
| Armco Steel | Hamilton | OH |
| Armco Steel | Mansfield | OH |
| Armco Steel | Middletown | OH |
| ARMCO STEEL | ZANESVILLE | OH |
| Armco Steel | New Miami | OH |
| ARMCO STEEL | MARION | OH |
| ARMCO STEEL – AIR CONDITIONING DUCT | MIDDLETOWN | OH |
| ARMCO STEEL – ANNEALING BUILDING | MIDDLETOWN | OH |
| ARMCO STEEL – BOILER HOUSE | MIDDLETOWN | OH |
| ARMCO STEEL – COLD MILL WASTE – UNIT #3 | MIDDLETOWN | OH |
| ARMCO STEEL – MELT SHOP | MIDDLETOWN | OH |
| ARMCO STEEL – OUTDOOR STEAM | MIDDLETOWN | OH |
| ARMCO STEEL – PICKLED LINES | MIDDLETOWN | OH |
| ARMCO STEEL – SLAB MILL | MIDDLETOWN | OH |
| ARMCO Steel – Vacuum Degasser | Middleton | OH |
| ARMCO STEEL – WASTE DISPOSAL BUILDING | MIDDLETOWN | OH |
| Armco Steel Co | Hamilton | OH |
| ARMCO STEEL -CONTINUOUS CASTING | MIDDLETOWN | OH |
| Armco Steel Corp | Middletown | OH |
| Armco Steel Corp | Middleton/middletown | OH |
| Armco Steel Corp | Middleton | OH |
| ARMCO STEEL CORP. | MIDDLETOWN | OH |
| ARMCO STEEL CORP., BRICK SHED DOOR #313, MIDDLETOWN WORKS | MIDDLETOWN | OH |
| ARMCO STEEL CORP., COKE PLANT, HAMILTON PLANT | HAMILTON | OH |
| ARMCO STEEL CORPORATION | HAMILTON | OH |
| Armco Steel Corporation | Middletown | OH |
| ARMCO STEEL CORPORATION | ZANESVILLE | OH |
| ARMCO STEEL CORPORATION | MIDDLETON | OH |
| Armco Steel Corporation- Middletown Works | Middletown | OH |
| ARMCO STEEL CORPORATION, MIDDLETOWN WORKS | MIDDLETOWN | OH |
| Armco Steel Mill | Middletown | OH |
| ARMCO, INC | MIDDLETOWN | OH |
| ARMCO, INCORPORATED | MIDDLETOWN | OH |
| ARMOUR AND COMPANY | ALLIANCE | OH |
| Armstrong Contracting & Supply | Cincinnati | OH |
| Armstrong Contracting & Supply | Circleville | OH |
| Armstrong Contracting & Supply | Cleveland | OH |
| Armstrong Contracting & Supply | Columbus | OH |
| Armstrong Contracting & Supply | Goledo | OH |
| Armstrong Contracting & Supply | Toledo | OH |
| Armstrong Contracting & Supply | Valley View | OH |
| ARMSTRONG CORK COMPANY | CLEVELAND | OH |
| ARMSTRONG CORK COMPANY | COLUMBUS | OH |
| ARNOLD, HOFFMAN & COMPANY, INCORPORATED | CINCINNATI | OH |
| ARO EQUIPMENT PLANT | BRYAN | OH |
| ARROW ALUMINUM | AVON LAKE | OH |
| ARROW ALUMINUM | CLEVELAND | OH |
| ART GALVANIZING | CLEVELAND | OH |
| Arthur G McGee Co. | Cleveland | OH |
| ARTHUR G. MCKEE & COMPANY | CLEVELAND | OH |
| ARTHUR G. MCKEE CO | CLEVELAND | OH |
| ARTHUR MCKEE | CLEVELAND | OH |
| ARWOOD CORP. | CLEVELAND | OH |
| Asarco, Inc. | Columbus | OH |
| ASBESTOS & ASPHALT RFG. CO. | HAMILTON | OH |
| ASBESTOS SERVICE COMPANY | WARREN | OH |
| ASBESTOS SERVICE COMPANY | WORTHINGTON | OH |
| ASBESTOS SERVICE COMPANY | YOUNGSTOWN | OH |
| ASBESTOS SERVICE COMPANY | COLUMBUS | OH |
| ASHLAND CHEMICAL | SOUTH POINT | OH |
| Ashland Chemical | Columbus | OH |
| Ashland Chemical | Dublin | OH |
| Ashland College | Ashland | OH |
| ASHLAND COLLEGE – ARTS AND HUMANITIES BLDG | ASHLAND | OH |
| ASHLAND HIGH SCHOOL | ASHLAND | OH |
| ASHLAND HS | ASHLAND | OH |
| Ashland Oil | Canton | OH |
| ASHLAND OIL | LIMA | OH |
| ASHLAND OIL | SOUTH POINT | OH |
| Ashland Oil | Ashland | OH |
| Ashland Oil | Belpre | OH |
| ASHLAND OIL & REFINING COMPANY | FINDLAY | OH |
| ASHLAND OIL & REFINING COMPANY | CANTON | OH |
| Ashland Oil And Refining Co. | Canton | OH |
| ASHLAND OIL CO | CANTON | OH |
| ASHLAND OIL REFINERY | CANTON | OH |
| Ashland Oil Refinery | Findlay | OH |
| ASHLAND OIL, INCORPORATED | NORTH BEND | OH |
| Ashtabula County Medical Center | Ashtabula | OH |
| ASHTABULA GENERAL HOSPITAL | ASHTABULA | OH |
| Ashtabula Powerhouse | Ashtabula | OH |
| Ashtabula Scrap & Reclamation Plant | Ashtabula | OH |
| ASHTABULA TELE CO | ASHTABULA | OH |
| ASHTABULA TELE CO WYMAN EXC | ASHTABULA | OH |
| ASHTABULA WATER SUPPLY COMPANY – PLANT | ASHTABULA | OH |
| ASHTUBULA METALS COMPANY, MIDDLE RD. | ASHTUBULA | OH |
| ASPHALT BLOCK PAVEMENT COMPANY | TOLEDO | OH |
| ASSOCIATED SHEET METAL | CLEVELAND | OH |
| ASSOCIATED SHEET METAL COMPANY | CLEVELAND | OH |
| AT & T | MEDINA | OH |
| AT&T | MEDINA | OH |
| AT&T | PORTSMOUTH | OH |
| ATHENS STATE HOSPITAL | ATHENS | OH |
| ATKINS & PEARCE MANUFACTURING COMPANY | CINCINNATI | OH |
| ATLANTIC FOUNDRY | AKRON | OH |
| Atlantic Foundry Company | Akron | OH |
| ATLAS CAR | CLEVELAND | OH |
| ATLAS FOUNDRY | CLEVELAND | OH |
| ATLAS LAUNDRY-LINEN SUPPLY | COLUMBUS | OH |
| ATLAS UNDERWEAR COMPANY | PIQUA | OH |
| ATMOSHPERIC NITROGEN CORPORATION | SOUTH POINT | OH |
| Atmospheric Nitrogen Corp. | South Point | OH |
| Atomic Energy Commission | Piketon/chillicothe | OH |
| AUGLAIZE BOX BOARD COMPANY | ST. MARYS | OH |
| AUGUST WAGNER AND SONS BREWING COMPANY | COLUMBUS | OH |
| AUGUST WAGNER BREWERIES, INCORPORATED | COLUMBUS | OH |
| AULT & WIBORG COMPANY | CINCINNATI | OH |
| AULT & WIBORG COMPANY | ST. BERNARD | OH |
| AULT & WIBORG COMPANY | NORWOOD | OH |
| AULTMAN AND TAYLOR MACHINERY COMPANY | MANSFIELD | OH |
| AULTMAN AND TAYLOR MACHINERY COMPANY, THRESHER DEPARTMENT | MANSFIELD | OH |
| AULTMAN COMPANY | CANTON | OH |
| AULTMAN HEALTH FOUNDATION | CANTON | OH |
| AULTMAN HEALTH SERVICES | CANTON | OH |
| AULTMAN HOSPITAL | CANTON | OH |
| AULTMAN HOSPITAL BOILER | CANTON | OH |
| AUSTIN POWDER COMPANY | CLEVELAND | OH |
| AUSTIN POWDER COMPANY | FALLS JUNCTION | OH |
| AUTO WORKERS CREDIT UNION | MANSFIELD | OH |
| Autolite | Toledo | OH |
| AUTOMOBILE CLUB, 6000 S. MARGINAL DR. | CLEVELAND | OH |
| AUTOMOTIVE EQUIPMENT | WESTLAKE | OH |
| AVCO CORPORATION | CINCINNATI | OH |
| AVCO CORPORATION, ELECTRONICS DIVISION | CINCINNATI | OH |
| AVCO MANUFACTURING CORPORATION, CROSLEY DIVISION | EVENDALE | OH |
| AVCO NEW IDEA FARM EQUIPMENT | COLDWATER | OH |
| AVENTIS PHARMACEUTICALS | CINCINNATI | OH |
| Avon Lake Powerhouse | Cleveland | OH |
| AVON PRODUCTS | SPRINGDALE | OH |
| AVTRON MANUFACTURING INC | CLEVELAND | OH |
| AVTRON MANUFACTURING, INC. | CLEVELAND | OH |
| B & A PLUMBING & HEATING COMPANY | SANDUSKY | OH |
| B & O | Chillicothe | OH |
| B & T METALS | COLUMBUS | OH |
| B & W | CANTON | OH |
| B & W | BRILLIANT | OH |
| B & W | BARBERTON | OH |
| B & W | ALLIANCE | OH |
| B & W | WILLOUGHBY | OH |
| B AND A PLBG. AND HEATING COMPANY | SANDUSKY | OH |
| B F GOODRICH CHEMICAL COMPANY – WALKER ROAD | AVON LAKE | OH |
| B F GOODRICH CHEMICAL COMPANY – WEST EMERLING AVENUE | AKRON | OH |
| B&T METALS | COLUMBUS | OH |
| B. & O., 2ND AND SMITH STS. | CINCINNATI | OH |
| B. F. GOODRICH | AKRON | OH |
| B. F. GOODRICH | AVON LAKE | OH |
| B. F. GOODRICH | MARIETTA | OH |
| B. F. GOODRICH | BRECKSVILLE | OH |
| B. F. GOODRICH – INDUSTRIAL PRODUCTS | MARIETTA | OH |
| B. F. GOODRICH – PLANT #3 | AKRON | OH |
| B. F. GOODRICH CHEMICAL CO | AKRON | OH |
| B. F. GOODRICH CHEMICAL CO | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – AKRON CHEMICAL PLANT | AKRON | OH |
| B. F. GOODRICH CHEMICAL CO – AVON LAKE CHEMICAL | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – AVON LAKE CHEMICAL | LORAIN COUNTY | OH |
| B. F. GOODRICH CHEMICAL CO – CHEMICAL PLANT | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – CHEMICAL PLANT – EXPERIMENTAL PLANT | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – EXPERIMENTAL PLANT | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – EXPERIMENTAL STATION | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – NEW WHSE. | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – PLANT #3 | AKRON | OH |
| B. F. GOODRICH CHEMICAL CO – PLANT #3 | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – PLANT NO. 3 | AKRON | OH |
| B. F. GOODRICH CHEMICAL CO – PLASTICIZER BUILDING – BUILDING 434 | AVON LAKE | OH |
| B. F. GOODRICH CHEMICAL CO – PLASTICIZER BUILDING 434 | AVON LAKE | OH |
| B. F. GOODRICH CO. | AKRON | OH |
| B. F. GOODRICH CO. – EXPERIMENTAL LAB. | AVON LAKE | OH |
| B. F. GOODRICH CO. – EXPERIMENTAL STATION | AVON LAKE | OH |
| B. F. GOODRICH DEVELOPMENT CENTER – BLDG 413 | AVON LAKE | OH |
| B. F. GOODRICH EXPERIMENTAL LAB. | AVON LAKE | OH |
| B. F. GOODRICH EXPERIMENTAL STATION | AVON LAKE | OH |
| B. F. GOODRICH SIDING | CINCINNATI | OH |
| B. F. GOODRICH SPUR | CINCINNATI | OH |
| B.F. Goodrich | Piketon | OH |
| B.F. Goodrich | Brecksville | OH |
| B.F. Goodrich | Avon Lake | OH |
| B.F. Goodrich | Akron | OH |
| B.F. Goodrich | Marietta | OH |
| B.F. GOODRICH CHEMICAL | AKRON | OH |
| B.F. GOODRICH CHEMICAL COMPANY | AKRON | OH |
| B.F. GOODRICH CHEMICAL COMPANY | CLEVELAND | OH |
| B.F. GOODRICH CHEMICAL COMPANY | AVON LAKE | OH |
| B.F. GOODRICH CHEMICAL COMPANY, WALKER RD. | AVON LAKE | OH |
| B.F. GOODRICH CHEMICAL COMPANY, WEST EMERLING AVE. | AKRON | OH |
| B.F. GOODRICH CHEMICALS | AVON LAKE | OH |
| B.F. Goodrich Co. | Akron | OH |
| B.F. GOODRICH COMPANY | AKRON | OH |
| B.F. GOODRICH COMPANY | CLEVELAND | OH |
| B.F. GOODRICH COMPANY | MARIETTA | OH |
| B.F. GOODRICH COMPANY | CINCINNATI | OH |
| B.F. GOODRICH COMPANY | MARION | OH |
| B.F. GOODRICH COMPANY, MILL #2 | AKRON | OH |
| B.F. GOODRICH RESEARCH LAB | BRECKSVILLE | OH |
| B.F. GOODRICH RUBBER COMPANY | AKRON | OH |
| B.P. AMERICA INCORPORATED | TOLEDO | OH |
| B.P. Chemical | Lima | OH |
| B.P. CHEMICALS | LIMA | OH |
| B.P. OIL | TOLEDO | OH |
| B.P. OIL COMPANY | LIMA | OH |
| B.P. OIL TOLEDO REFINERY | OREGON | OH |
| Babcock & Wilcox | Canton | OH |
| Babcock & Wilcox | Cleveland | OH |
| Babcock & Wilcox | Stratton | OH |
| Babcock & Wilcox | Barberton | OH |
| BABCOCK & WILCOX | CINCINNATI | OH |
| Babcock & Wilcox | Brilliant | OH |
| Babcock & Wilcox | Alliance | OH |
| Babcock & Wilcox Canton Works | Barberton | OH |
| Babcock & Wilcox Canton Works | Canton | OH |
| Babcock & Wilcox Co | Cleveland | OH |
| BABCOCK & WILCOX CO. | BARBERTON | OH |
| BABCOCK & WILCOX CO. – RESEARCH CENTER | ALLIANCE | OH |
| BABCOCK & WILCOX CO. – RESIDENCE CENTER | ALLIANCE | OH |
| BABCOCK & WILCOX COMPANY | ALLIANCE | OH |
| BABCOCK & WILCOX COMPANY | ASHLAND | OH |
| BABCOCK & WILCOX COMPANY | BARBERTON | OH |
| BABCOCK & WILCOX COMPANY | EAST LIVERPOOL | OH |
| BABCOCK & WILCOX COMPANY | BRABERTON | OH |
| Babcock & Wilcox Company | N. Canton | OH |
| BABCOCK & WILCOX COMPANY – STIRLING AVENUE PLANT | BARBERTON | OH |
| BABCOCK & WILCOX COMPANY, EXPERIMENTAL LABORATORY | ALLIANCE | OH |
| BABCOCK & WILCOX COMPANY, RESEARCH AND DEVELOPMENT DIVISION | ALLIANCE | OH |
| BABCOCK & WILCOX COMPANY, TUBULAR PRODUCTS DIVISION | ALLIANCE | OH |
| BABCOCK & WILCOX COMPANY, WELDED TUBE DIVISION | ALLIANCE | OH |
| Babcock-Wilcox Co | Barberton | OH |
| BABCOX & WILCOX | CLEVELAND | OH |
| BABCOX & WILCOX | DAYTON | OH |
| Bailey Meter | Cleveland | OH |
| BAILEY METER COMPANY | CLEVELAND | OH |
| BAILEY METER COMPANY | WICKLIFFE | OH |
| Baileyville Church | Baileyville Church | OH |
| BAKELITE COMPANY | MARIETTA | OH |
| BAKELITE COMPANY | RIVERVIEW | OH |
| BAKER RAULANG COMPANY | CLEVELAND | OH |
| BAKER RAULING COMPANY | CLEVELAND | OH |
| BAKER WOOD PRESERVING COMPANY | MARION | OH |
| Baldwell-Lemmon Co | Cleveland | OH |
| BALDWIN COMPANY | CINCINNATI | OH |
| BALDWIN PIANO COMPANY | CINCINNATI | OH |
| Baldwin-Ehert-Hill Inc | Cincinnati | OH |
| BALDWIN-LIMA-HAMILTON CORPORATION | HAMILTON | OH |
| Ballonoff Home Products | Shelby | OH |
| BALTIMORE & OHIO RAILROAD | CANTON | OH |
| BALTIMORE & OHIO RAILROAD | CINCINNATI | OH |
| BALTIMORE & OHIO RAILROAD CO | WILLARD | OH |
| BALTIMORE & OHIO RAILROAD CO | DAYTON | OH |
| BALTIMORE & OHIO RAILROAD CO – DIVISION SK | DAYTON | OH |
| BALTIMORE & OHIO RAILROAD CO – DIVISION SK | LORAIN | OH |
| BALTIMORE & OHIO RAILROAD CO – DIVISION SK – SECTION A | IVORYDALE | OH |
| BALTIMORE & OHIO RAILROAD CO – LOCAL SK | LORAIN | OH |
| BALTIMORE & OHIO RAILROAD CO – SECTION A | IVORYDALE | OH |
| BALTIMORE & OHIO RAILROAD CO. | IVORYDALE | OH |
| BALTIMORE & OHIO RAILROAD CO. | DAYTON | OH |
| BALTIMORE & OHIO RAILROAD CO. | CANTON | OH |
| BALTIMORE & OHIO RAILROAD CO. | LORAIN | OH |
| BALTIMORE & OHIO RAILROAD COMPANY | NEWARK | OH |
| BALTIMORE & OHIO TEAM TRACK | ATHENS | OH |
| BALTIMORE AND OHIO RAILROAD COMPANY | CLEVELAND | OH |
| BALTIMORE AND OHIO RAILROAD COMPANY | HALLAWAY | OH |
| BALTIMORE AND OHIO RAILROAD COMPANY | CHICAGO JUNCTION | OH |
| BALTIMORE AND OHIO RAILROAD COMPANY | LORAIN | OH |
| BAMBURGER REINTHOL | CLEVELAND | OH |
| BANGOR PUNTA | CLEVELAND | OH |
| BANISTER CORPORATION | HUBBARD | OH |
| BARBERTON ALUMINUM | BARBERTON | OH |
| BARBERTON CITIZENS HOSPITAL | BARBERTON | OH |
| BARBERTON CITY SCHOOLS | BARBERTON | OH |
| BARBERTON HS | BARBERTON | OH |
| BARBERTON LAND AND HOTEL COMPANY | BARBERTON | OH |
| BARBERTON LAUNDRY | BARBERTON | OH |
| BARBERTON MFG. CO. | BARBERTON | OH |
| Bard Manufacturing Co | Bryan | OH |
| BARDONS AND OLIVER | CLEVELAND | OH |
| BARDSONS – OLIVER | CLEVELAND | OH |
| BARNES MANUFACTURING COMPANY | MANSFIELD | OH |
| BARNETTS STABLES | AKRON | OH |
| BARNEY AND SMITH CAR COMPANY | DAYTON | OH |
| BARRETT BREWING COMPANY | CLEVELAND | OH |
| Barrett Chemical | Ironton | OH |
| Barrett Chemical Co. | Ironton | OH |
| BARRETT COMPANY | CLEVELAND | OH |
| BARRETT COMPANY | STRUTHERS | OH |
| BARRETT COMPANY | TOLEDO | OH |
| BARRETT COMPANY | YOUNGSTOWN | OH |
| Barrett Division (Allied Chemical & Dye) | Ironton | OH |
| BARRETT DIVISION ALLIED CHEMICAL AND DYE CORPORATION | IRONTON | OH |
| BARTH – CLEVITE | CLEVELAND | OH |
| BARTH – MCNEIL | CLEVELAND | OH |
| BARTHOLOMEW CITY HOSPITAL | COLUMBUS | OH |
| BARTLETT BROTHERS COMPANY | CLEVELAND | OH |
| Bartlett Snow and Pacific Fabricators | Cleveland | OH |
| BASF CORPORATION | GREENVILLE | OH |
| BASIC INC. * | MAPLE GROVE | OH |
| BASIC INCORPORATED | BETTSVILLE | OH |
| BASIC INCORPORATED | FOSTORIA | OH |
| BASIC INCORPORATED | MAPLE GROVE | OH |
| BASIC OXYGEN FURNACE | CLEVELAND | OH |
| BASIC REFRACTORIES | MAPLE GROVE | OH |
| BASIC REFRACTORY | MAPLE GROVE | OH |
| BASIC SCIENCE BUILDING | CINCINNATI | OH |
| BASIC, INCCORPORATED | MAPLE GROVE | OH |
| BATTELLE MEMORIAL INSTITUTE | COLUMBUS | OH |
| Battelle Memorial Institute, | Columbus | OH |
| BAY SHORE POWER PLANT | TOLEDO | OH |
| Bay Shore Power Plant | Oregon | Ohio |
| BAY SHORE POWER PLANT – UNIT 2 | TOLEDO | OH |
| BAY WEST | MIDDLETOWN | OH |
| BAYER COMPANY, INCORPORATED, GERALD W. LEAS | ADDYSTON | OH |
| BAYER COMPANY, INCORPORATED, PORT PLASTICS | ADDYSTON | OH |
| BAYVIEW HOSPTIAL | BAY VILLAGE | OH |
| BD. OF COUNTY COMM. | CLEVELAND | OH |
| BEACH ENAMELING COMPANY | COSHOCTON | OH |
| BEACH ST. HEATING | AKRON | OH |
| Beans Ferry | Martins Ferry | OH |
| BEARFOOT SOLE COMPANY, INCORPORATED | WADSWORTH | OH |
| BEAVER CREEK BOARD OF EDUCATION | BEAVERCREEK | OH |
| BEAVER REMMER PLANT | DAYTON | OH |
| BECHTEL CORP | ASHTABULA | OH |
| Bechtel Corp | Lima | OH |
| BECHTEL CORPORATION | ASHTABULA | OH |
| Bechtel Corporation | Lima | OH |
| BECHTOL, CARNEY & COMPANY | TOLEDO | OH |
| BECKER SEIDEL COMPANY | CLEVELAND | OH |
| BECKER, BARNES & BECKER RENDERING CO | BRYAN | OH |
| BECKETT PAPER COMPANY | HAMILTON | OH |
| BECKMAN COMPANY | CLEVELAND | OH |
| BECKMAN, SR. & COMPANY | CLEVELAND | OH |
| BEDFORD HEATING | BEDFORD HEIGHTS | OH |
| Bedford High School | Bedford | OH |
| BEECHMONT MALL – HOT SHOPPES | BEECHMONT | OH |
| Beekman “A” Housing Project | Cincinnati | OH |
| BEERMAN OFFICE BUILDING – WEST FIRST STREET | DAYTON | OH |
| BELDEN BRICK COMPANY | SUGAR CREEK | OH |
| BELFONT IRON WORKS COMPANY | IRONTON | OH |
| BELFONTI | CANTON | OH |
| BELL STONE SCHOOL | CANTON | OH |
| BELLA ISLE | CLEVELAND | OH |
| BELLAIRE LIGHT AND POWER COMPANY – POWER PLANT | BELLAIRE | OH |
| BELLAIRE NAIL WORKS | BELLAIRE | OH |
| BELLAIRE STEEL COMPANY | BELLAIRE | OH |
| BELMONT BREWING COMPANY | MARTINS FERRY | OH |
| BENADA ALUMINUM | GIRARD | OH |
| Bendix | Elyria | OH |
| Bendix | South Bend | OH |
| BENDIX CORP AUTOMATION & MEASUREMENT DIV | DAYTON | OH |
| BENDIX CORPORATION | ELYRIA | OH |
| Bendix Westinghouse Company | Elyria | OH |
| BENJAMIN HEY CO | CINCINNATI | OH |
| BERGER BREWING COMPANY | CINCINNATI | OH |
| BERGER MANUFACTURING COMPANY | CANTON | OH |
| BERNERT HEAT TREATING | CINCINNATI | OH |
| Bersted Manufacturing | Fostoria | OH |
| BESCAST INC | WILLOUGHBY | OH |
| BESSEMER LIMESTONE COMPANY | YOUNGSTOWN | OH |
| Bessie Benner Metzenbaum Children’s Center of Cuyahoga County | Chesterland | OH |
| BEST FOUNDRY COMPANY | BEDFORD | OH |
| BEST TRUCK EQUIPMT | WICKLIFFE | OH |
| BETHANDALE CORPORATION | CLEVELAND | OH |
| BETHESDA HOSPITAL | CINCINNATI | OH |
| BETHESDA HOSPITAL ASSOCIATION | ZANESVILLE | OH |
| BETHESDA OAK HOSPITAL | CINCINNATI | OH |
| BETHESDA STEAM LINE | CINCINNATI | OH |
| Bethlehem Steel | Massillon | OH |
| BETTCHER | CLEVELAND | OH |
| Beverly Powerhouse | Beverly | OH |
| BF Goodrich | Akron | OH |
| BF Goodrich | Independence | OH |
| BF Goodrich | Brecksville | OH |
| BF GOODRICH CHEM CO (NEW WAREHOUSE) | AVON LAKE | OH |
| BF GOODRICH CHEM CO AVON LAKE CHEM PLANT | AVON LAKE | OH |
| BF GOODRICH CHEM EXPERIMENTAL STATION | AVON LAKE | OH |
| BF GOODRICH CHEMICAL COMPANY – GENERAL CHEMICAL PLT | AVON LAKE VILLAGE | OH |
| BF Goodrich Company | Akron | OH |
| BF GOODRICH EXPERIMENTAL STATION | AVON LAKE | OH |
| BF GOODRICH PLANT 4 | AKRON | OH |
| BF GOODRICH, AVON LAKE CHEMICAL | AVON LAKE | OH |
| BIG BEAR BAKERY | COLUMBUS | OH |
| Big Drum Co. | Columbus | OH |
| BIG FOUR RAILWAY COMPANY | BELLEFONTAINE | OH |
| BIG FOUR RAILWAY COMPANY | CINCINNATI | OH |
| Biggs United Company | Akron | OH |
| BINGHAM | CLEVELAND | OH |
| Bingham-Herbrand Corporation | Fremont | OH |
| BIRD ELECTRIC | SOLON | OH |
| BIRD ELECTRONICS S | SOLON | OH |
| Bishop & Babcock Manufacturing Company | Cleveland | OH |
| BISHOP AND BABCOCK COMPANY | CLEVELAND | OH |
| BISTRON CORP – ACRYLO NITRO PLANT | LIMA | OH |
| BLACE CLEANERS | CLEVELAND | OH |
| BLACK AND CLAWSON COMPANY | HAMILTON | OH |
| BLACK DRILL | CLEVELAND | OH |
| BLAU KNOX | CLEVELAND | OH |
| BLEILLE SUPPLY | NORWALK | OH |
| BLEILLE SUPPLY | FREMONT | OH |
| BLISS COMPANY | CANTON | OH |
| BLOCK-POLLAK IRON COMPANY | CINCINNATI | OH |
| Blue Boar Cafeteria | Cleveland | OH |
| BLYMER ICE MACHINE COMPANY | CINCINNATI | OH |
| BOARD OF CITY AFFAIRS | CINCINNATI | OH |
| BOARD OF COUNTY COMMISSIONERS OF CUYAHOGA COMPANY | CLEVELAND | OH |
| BOARD OF PUBLIC AFFAIRS | ORRVILLE | OH |
| BOARD OF PUBLIC SERVICE | DAYTON | OH |
| BOARD OF PUBLIC SERVICE | MANSFIELD | OH |
| BOARD OF PUBLIC SERVICE | SIDNEY | OH |
| BOARD OF PUBLIC SERVICE | TROY | OH |
| BOARD OF PUBLIC SERVICE | COLUMBUS | OH |
| BOARD OF TRUSTEE OF PUBLIC AFFAIRS | LONDON | OH |
| BOARD OF TRUSTEES OF OHIO BOYS INDUSTRIAL SCHOOL | LANCASTER | OH |
| BOB EVAN`S RESTAURANT | CINCINNATI | OH |
| BOBBY BROOKS | CLEVELAND | OH |
| BODWELL LEMMON CO | CLEVELAND | OH |
| BODWELL LEMMON COMPANY | CLEVELAND | OH |
| BOEHM PRESSED STEEL COMPANY | CLEVELAND | OH |
| BOILER HOUSE #2 | MIDDLETOWN | OH |
| BOISE CASCADE | CLEVELAND | OH |
| BOLLING OVEN | AVON | OH |
| BOOHER INSULATION, INC. | DAYTON | OH |
| Booher Insulation | Dayton | OH |
| Booher Insulation Company | Dayton | OH |
| Booker Insulation | Dayton | OH |
| Border Chemical | Worthington | OH |
| Borg Warner | Mansfield | OH |
| BORMOT COMPANY | CANTON | OH |
| BOSTON & OHIO RAILROAD COMPANY | CLEVELAND | OH |
| BOSTON & OHIO RAILROAD COMPANY | HOLLOWAY | OH |
| BOSTON & OHIO RAILROAD COMPANY | LORAIN | OH |
| BOURNE-FULLER COMPANY | CLEVELAND | OH |
| Bow Socket Company | Ashtabula | OH |
| BOWDEN MFG | WILLOUGHBY | OH |
| BOWERSTON SHALE COMPANY | HANOVER | OH |
| Bowerston Shale Company – Hanover Plant | Newark | OH |
| BOWLING GREEN STATE UNIVERSITY, MAIN BOILER HOUSE | BOWLING GREEN | OH |
| BOWLING GREEN STATE UNIVERSITY, PHYSICAL PLANT | BOWLING GREEN | OH |
| BP | CLEVELAND | OH |
| BP CHEMICAL | LIMA | OH |
| Bp Refinery | Lima | OH |
| BRADLEY ELECTRIC LIGHT, HEAT AND POWER COMPANY – POWER PLANT | CLEVELAND | OH |
| BRAEBURN | CLEVELAND | OH |
| BRAINARD PLUMBING COMPANY | CLEVELAND | OH |
| Brainard Strapping | Warren | OH |
| BRAND PLASTIC | CANTON | OH |
| BRAUER SUPPLY | CINCINNATI | OH |
| BRAUN BROTHERS PACKING COMPANY | TROY | OH |
| BRECKSVILLE VA HOSPITAL | BRECKSVILLE | OH |
| BREEDING INSULATION CO. INC. | CINCINNATI | OH |
| Brian Hall Stone Company | Glen Mount | OH |
| BRIAR HILL IRON AND COAL COMPANY | YOUNGSTOWN | OH |
| Briarhill and Campbell Works Plant | Youngstown | OH |
| BRICE DREBER ASYLUM | CLEVELAND | OH |
| BRIDGEPORT BRASS COMPANY | ASHTABULA | OH |
| Brier Hill | Youngstown | OH |
| BRIER HILL IRON AND COAL COMPANY | YOUNGSTOWN | OH |
| Brier Hill Steel Co. | Brier Hill | OH |
| BRIER HILL STEEL COMPANY | YOUNGSTOWN | OH |
| BRIGGS MANUFACTURING COMPANY | CINCINNATI | OH |
| BRIGGS MANUFACTURING COMPANY | YOUNGSTOWN | OH |
| BRIGHTON CORPORATION | CINCINNATI | OH |
| BRIGHTON CORPORATION | SHARONVILLE | OH |
| BRIGHTON MUSHROOM FARM | NAPOLEON | OH |
| BRITTON SERVICE COMPANY | CLEVELAND | OH |
| Broadmoor School | Mentor | OH |
| BROADVIEW HEIGHTS HOSPITAL | BRECKSVILLE | OH |
| BROADWAY HIGH SERVICE PUMPING STATION | TOLEDO | OH |
| BROCALSA CHEMICAL COMPANY | SYRACUSE | OH |
| BRODESS CONSTRUCTION | CLEVELAND | OH |
| BROMAID STEEL COMPANY | WARREN | OH |
| BRONSON PORTLAND CEMENT COMPANY | CLEVELAND | OH |
| BROSE AND BAUMGARTNER | NEW WASHINGTON | OH |
| BROST FOUNDRY | CLEVELAND | OH |
| BROWN FIN TUBE CO – PLANT 1 | ELYRIA | OH |
| BROWN FIN TUBE COMPANY | ELYRIA | OH |
| BROWN FINTUBE | ELYRIA | OH |
| BROWN FLO, SICKER, COMB | CANTON | OH |
| BROWN GRAVES COMPANY | AKRON | OH |
| BROWN HOISTING MACHINERY COMPANY | CLEVELAND | OH |
| BROWN MEMORIAL HOSPITAL | CONNEAUT | OH |
| BROWN PLASTERING COMPANY | CINCINNATI | OH |
| BROWN STEEL | COLUMBUS | OH |
| BROWN-BONNELL IRON COMPANY | YOUNGSTOWN | OH |
| BROWN-BONNELL WORKS | YOUNGSTOWN | OH |
| BROWNE AND FULLER COMPANY | CLEVELAND | OH |
| BROWNELL STOKER AND COMBUST | DAYTON | OH |
| BROWNELL STOKER AND COMBUSTION COMPANY | DAYTON | OH |
| BROWNELL STOKER AND COMBUSTION COMPANY | CANTON | OH |
| BROWNING COMPANY | CLEVELAND | OH |
| BROWNING ENGINEERING & MANUFACTURING COMPANY | CLEVELAND | OH |
| BROWNING ENGINEERING & MANUFACTURING COMPANY | MANSFIELD | OH |
| Bruckman Brewery | Cincinnati | OH |
| BRUCKMAN BREWING COMPANY | CINCINNATI | OH |
| BRUNSWICK ELEM SCHOOL | BRUNSWICK | OH |
| BRUNSWICK ELEMENTARY SCHOOL | BRUNSWICK | OH |
| BRUSH – WELLMAN | ELMORE | OH |
| BRUSH BERYLLIUM | ELMORE | OH |
| BRUSH BERYLLIUM | CLEVELAND | OH |
| BRUSH BERYLLIUM COMPANY | ELMORE | OH |
| BRUSH ELECTRIC COMPANY – WORKS | CLEVELAND | OH |
| BRUSH LABORATORIES | CLEVELAND | OH |
| BRUSH LABORATORIES – QUARTZ PILOT PLANT | BEDFORD | OH |
| Brush Wellman | Elmore | OH |
| Brush Wellman | Toledo | OH |
| BRUSH WELLMAN, INC. | CLEVELAND | OH |
| BRYAN MUNICIPAL LIGHT & POWER | BRYAN | OH |
| BRYAN MUNICIPAL UTILITIES – POWER PLANT | BRYAN | OH |
| Buckeye Brewing Co. | Toledo | OH |
| BUCKEYE BREWING COMPANY | TOLEDO | OH |
| BUCKEYE BUMPERS DIVISION | SPRINGFIELD | OH |
| BUCKEYE CELLULOSE CORPORATION | DAYTON | OH |
| BUCKEYE CEREAL COMPANY | MASSILLON | OH |
| Buckeye Cotton Oil Company | Cincinnati | OH |
| BUCKEYE ELECTRIC COMPANY | CLEVELAND | OH |
| BUCKEYE ENGINE COMPANY | SALEM | OH |
| Buckeye Foundry Company | Cincinnati | OH |
| BUCKEYE INSULATING COMPANY | CLEVELAND | OH |
| Buckeye Insulation Company | Cleveland | OH |
| BUCKEYE IRON AND BRASS WORKS | DAYTON | OH |
| BUCKEYE MALLEABLE IRON AND COUPLER COMPANY | COLUMBUS | OH |
| BUCKEYE MALLEABLE IRON AND COUPLER COMPANY | SOUTH COLUMBUS | OH |
| Buckeye Ordnance Works | South Point | OH |
| BUCKEYE ORDNANCE WORKS | IRONTON | OH |
| Buckeye Pipe Line Co. | Mantua | OH |
| BUCKEYE POWER, INCORPORATED | BRILLIANT | OH |
| BUCKEYE POWER, INCORPORATED, CARDINAL GENERATING STATION | BRILLIANT | OH |
| BUCKEYE ROLLING MILL COMPANY | NEWARK | OH |
| BUCKEYE RUBBER PRODUCTS COMPANY | CLEVELAND | OH |
| Buckeye Steel | Columbus | OH |
| Buckeye Steel Casting Company | South Columbus | OH |
| BUCKEYE STEEL CASTINGS COMPANY | COLUMBUS | OH |
| Buckeye Steel Mill | Jackson | OH |
| BUCKEYE SUGAR INC | OTTAWA | OH |
| Bucyrus Blades | Bucyrus | OH |
| BUCYRUS ELECTRIC LIGHT COMPANY – POWER PLANT | BUCYRUS | OH |
| BUEL GATTERDAM COMPANY, INCORPORATED | COLUMBUS | OH |
| BUFFALO SPRINGFIELD ROAD ROLLER COMPANY | SPRINGFIELD | OH |
| BULK MAIL | CINCINNATI | OH |
| BULLOCK ELECTRIC MANUFACTURING COMPANY | CINCINNATI | OH |
| BULLOCK ELECTRIC MANUFACTURING COMPANY | EAST NORWOOD | OH |
| BULLOCK WORKS | NORWOOD | OH |
| BUNKER HILL GREENHOUSES, INCORPORATED | MEDINA | OH |
| BUNTING & BRONZE CO | TOLEDO | OH |
| BUNTING BRASS AND BRONZE COMPANY | TOLEDO | OH |
| BURDETT | CLEVELAND | OH |
| BURDETT | MANSFIELD | OH |
| BURDETT | NEW PHILADELPHIA | OH |
| Burdett Oxygen Company | Cleveland | OH |
| BURDETTE OYGEN | YOUNGSTOWN | OH |
| BURDOX | CLEVELAND | OH |
| BURGER BREWERY – #5 STORAGE TANK – LIBERTY STREET & CENTRAL PARKWAY | CINCINNATI | OH |
| BURGER BREWERY – BRINE COOLING SYSTEM – LIBERTY STREET & CENTRAL PARKWAY | CINCINNATI | OH |
| BURGER BREWERY – DUCT SYSTEM – LIBERTY STREET & CENTRAL PARKWAY | CINCINNATI | OH |
| BURGER BREWERY – MASH 10B & RICE COOKER – LIBERTY STREET & CENTRAL PARKWAY | CINCINNATI | OH |
| BURGER BREWING COMPANY | CINCINNATI | OH |
| BURGER CHEF | DAYTON | OH |
| BURGESS STEEL AND IRON COMPANY | PORTSMOUTH | OH |
| BURKE GOLF COMPANY | NEWARK | OH |
| Burnham Boilers | Belington | OH |
| BURNS COLD FORGE | MINERVA | OH |
| Burns Incorportion | Lorain | OH |
| BURTON ELEM SCHOOL | BURTON | OH |
| BURTON ELEMENTARY SCHOOL | BURTON | OH |
| BUSHEY COTTON COMPANY | COLUMBUS | OH |
| BUTLER COUNTY ADMINISTRATION BUILDING – HIGH STREET | HAMILTON | OH |
| BUTLER COUNTY JAIL | CINCINNATI | OH |
| BUTLER COUNTY RETARDED CHILDREN`S SCHOOL – FAIR AVENUE | HAMILTON | OH |
| BUTLER COUNTY VOCATIONAL SCHOOL | FAIRFIELD | OH |
| Byerlite Asphalt | Cleveland | OH |
| Byerlite Corporation | Cleveland | OH |
| Byerly Asphalt | Marietta | OH |
| Byrnes Conways Co. | Cincinnati | OH |
| C. & G. COOPER AND COMPANY | MT. VERNON | OH |
| C. & G. COOPER COMPANY | MT. VERNON | OH |
| C. SCHMIDT & SONS, INCORPORATED | CLEVELAND | OH |
| C. W. BOOHER, INC. | DAYTON | OH |
| C.A. LITZLER | CLEVELAND | OH |
| C.E. SEARS AND COMPANY | CIRCLEVILLE | OH |
| C.E.I. | ASHTABULA | OH |
| C.E.I. | WILLOUGHBY | OH |
| C.H. HEINRICKS GREENHOUSE | COLUMBIA STATION | OH |
| C.L. GAUGLER MACHINE COMPANY | KENT | OH |
| C.M. SCOTT PLANT | MARYSVILLE | OH |
| C.O. HENRIKSEN | COLUMBIANA | OH |
| C.P. Hall Chemical | Akron | OH |
| C.W. Boomer & Co | Dayton | OH |
| C.W. RAYMOND COMPANY | DAYTON | OH |
| Ca Litzler Company Inc. | Cleveland | OH |
| Cabot Corp | Ashtabula | OH |
| CABOT CORP. | ASHTABULA | OH |
| CABOT CORPORATION | ASHTABULA | OH |
| CABOT CORPORATION | CLEVELAND | OH |
| CABOT TITANIA CORP | ASHTABULA | OH |
| CABOT TITANIA CORP – OLD TICKLE PLANT | ASHTABULA | OH |
| CABOT TITANIA CORPORATION | ASHTABULA | OH |
| CABOT TITANIA, INC. | ASHTABULA | OH |
| CAHOT TITANIA | ASHTABULA | OH |
| CAHOT TITANIA CORP | ASHTABULA | OH |
| CAL-HIO CHEMICAL PLANT | CLEVELAND | OH |
| Calhio Chemicals, Inc. | Perry | OH |
| CALHOUN RESIDENCE HALL PLBG | EVENDALE | OH |
| CAMBRIA | LORAIN | OH |
| CAMBRIA CLAY PRODUCTS CO. – BLACK FORK PLANT | OAK HILL | OH |
| CAMBRIA CLAY PRODUCTS COMPANY | OAK HILL | OH |
| CAMBRIDGE BREWING COMPANY | CAMBRIDGE | OH |
| CAMBRIDGE DEVELOPMENTAL CENTER | CLAYSVILLE | OH |
| CAMBRIDGE GLASS COMPANY | CAMBRIDGE | OH |
| CAMBRIDGE STATE HOSPITAL | CAMBRIDGE | OH |
| CAMBRIDGE STATE HOSPITAL | CANTON | OH |
| CAMP AND THOMPSON | CUYAHOGA FALLS | OH |
| CAMPBELL SOUP CO | NAPOLEON | OH |
| CAMPBELL SOUP CO – V-8 PLANT | NAPOLEON | OH |
| CAMPBELL SOUP CO. | EAST MAUMEE | OH |
| CAMPBELL SOUP CO. | NAPOLEON | OH |
| CAMPBELL SOUP COMPANY | NAPOLEON | OH |
| CAMPBELL SOUP PLANT | NAPOLEON | OH |
| CANAAN COAL COMPANY | CANAANVILLE | OH |
| CANADIAN COPPER COMPANY | CLEVELAND | OH |
| Canal Street Garage | Cincinnati | OH |
| Candle Lite Homes Lot 23 | Columbus | OH |
| CANNAN COAL COMPANY | CANAANVILLE | OH |
| CANTON AND AKRON RAILWAY COMPANY | NEW BERLIN | OH |
| Canton Casting | Canton | OH |
| CANTON DIE | CANTON | OH |
| CANTON DROP FORGE | CANTON | OH |
| Canton Drop Forge Plant | Canton | OH |
| CANTON DROP FORGE PLANT NO 1 | CANTON | OH |
| Canton Drop Forging & Mfg. Co. | Canton | OH |
| Canton Drop Forging & Mfg. Co. | Massillon | OH |
| CANTON DROP FORGING AND MANUFACTURING COMPANY | CANTON | OH |
| CANTON ELECTRIC COMPANY – POWER PLANT | CANTON | OH |
| CANTON ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | CANTON | OH |
| CANTON FORGE AND AXLE COMPANY | CANTON | OH |
| CANTON FORGE PLANT | CANTON | OH |
| Canton Harrison S. M. | Louisville | OH |
| CANTON HUGHES PUMP COMPANY | CANTON | OH |
| CANTON LAUNDRY AND CLEANING COMPANY | CANTON | OH |
| CANTON LIGHT, HEAT AND POWER COMPANY – POWER PLANT | CANTON | OH |
| CANTON MALLEABLE IRON CO | CANTON | OH |
| CANTON MALLEABLE IRON COMPANY | CANTON | OH |
| CANTON SAW COMPANY | CANTON | OH |
| CANTON SCREEN PLANT,TRUSCON DIVISION | CANTON | OH |
| CANTON SEWAGE | CANTON | OH |
| CANTON SOUTH HIGH SCHOOL | CANTON | OH |
| CANTON STEEL FOUNDRY COMPANY | CANTON | OH |
| CANTON STORAGE INC | CANTON | OH |
| CANTON WATER POLLUTION CONTROL CENTER | CANTON | OH |
| CAPITAL CITY PRODUCTS COMPANY | COLUMBUS | OH |
| CAPITOL SAVINGS AND TRUST COMPANY, S.A. ESSMEIN | COLUMBUS | OH |
| CARBO TOOL AND DIE | FREMONT | OH |
| Carbon Black | Belpre | OH |
| Cardinal Operating Co. – Cardinal Power Plant | Brilliant | OH |
| Cardinal Operating Co. – Cardinal Power Plant – Units 1 & 2 | Brilliant | OH |
| CARDINAL OPERATING COMPANY | BRILLIANT | OH |
| CARDINAL OPERATING COMPANY – CARDINAL POWER PLANT | BRILLIANT | OH |
| CARDINAL OPERATING COMPANY – CARDINAL POWER PLANT – UNIT 3 | BRILLIANT | OH |
| Cardinal Powerhouse | Brilliant | OH |
| CARDINGTON BAPTIST TEMPLE | CARDINGTON | OH |
| CAREW BUILDING | CINCINNATI | OH |
| CAREW TOWER BUILDING | CINCINNATI | OH |
| CAREY PHILIP CO DIV PANAC | LOCKLAND | OH |
| CAREY PHILIP CO. | LOCKLAND | OH |
| CARGILL, INC | DAYTON | OH |
| CARGILL, INCORPORATED | DAYTON | OH |
| CARGILL, INCORPORATED, TERRY DEAN | DAYTON | OH |
| CARL MEYER CORP | ROCKY RIVER | OH |
| CARLISLE CHEMICAL WORKS | READING | OH |
| CARLSON FABRICATING & WELDING | LORAIN | OH |
| Carlyle Tile | Cole Grove | OH |
| CARNAHAN TIN PLATE AND SHEET COMPANY | CANTON | OH |
| CARNAHAN TIN PLATE WORKS | CANTON | OH |
| CARNATION CO | HILLSBORO | OH |
| CARNATION COMPANY | COSHOCTON | OH |
| CARNATION COMPANY | HILLSBORO | OH |
| CARNEGIE ILLINOIS STEEL CORPORATION | CANTON | OH |
| CARNEGIE ILLINOIS STEEL CORPORATION | YOUNGSTOWN | OH |
| CARNEGIE STEEL COMPANY | MCDONALD | OH |
| CARNEGIE STEEL COMPANY | CLEVELAND | OH |
| CARNEGIE STEEL COMPANY | MINGO JUNCTION | OH |
| CARNEGIE STEEL COMPANY | COLUMBUS | OH |
| CARNEGIE STEEL COMPANY | FAIRPORT HARBOR | OH |
| CARNEGIE STEEL COMPANY | BELLAIRE | OH |
| CARNEGIE STEEL COMPANY | YOUNGSTOWN | OH |
| Carnegie-Illinois Steel Corp. | Pittsburgh | OH |
| Carnegie-Illinois Steel Corp. | Youngstown | OH |
| CARNEGIE-ILLINOIS STEEL CORP. (U.S. Steel) – OHIO WORKS | YOUNGSTOWN | OH |
| CARNEY PAPER COMPANY | MAUMEE | OH |
| Carrier Corporation | Akron | OH |
| CARROLL FOUNDRY AND MACHINE WORKS | BUCYRUS | OH |
| CARROLLTON POTTERY COMPANY | CARROLTON | OH |
| CARROUSEL SHOPPING CENTER – READING ROAD | CINCINNATI | OH |
| Carter Jones Lumber Co | Akron | OH |
| Carter Jones Lumber Co | Stow | OH |
| CARTHAGE MILLS, INCORPORATED | CINCINNATI | OH |
| CASE CRANE AND KILBOURNE JACOBS COMPANY | COLUMBUS | OH |
| CASE INSTITUTE LIBRARY AND HUMANITI | CLEVELAND | OH |
| CASE INSTITUTE OF TECHNOLOGY | CLEVELAND | OH |
| CASE INSTITUTE OF TECHNOLOGY – OLIN BUILDING | CLEVELAND | OH |
| CASE INSTITUTE OF TECHONLOGY | CLEVELAND | OH |
| CASE SCHOOL OF APPLIED SCIENCE | CLEVELAND | OH |
| CASE WESTERN RESERVE | CLEVELAND | OH |
| Case Western Reserve School of Law | Cleveland | OH |
| CASE WESTERN RESERVE UNIV. – Case Institute of Technology | CLEVELAND | OH |
| CASE WESTERN RESERVE UNIVERSITY – MENS DORM – MISTLETOE & MAGNOLIA | CLEVELAND | OH |
| Case Western Reserve University, Newton D. Baker Memorial Building | Cleveland | OH |
| CASH SALE | CLEVELAND | OH |
| Cashway Lumber Co | Akron | OH |
| Cashway Lumber Co | Austinburg | OH |
| Cashway Lumber Co | Columbus Grove | OH |
| Cashway Lumber Co | Dover | OH |
| Cashway Lumber Co | Kent | OH |
| Cashway Lumber Co | Lewisville | OH |
| Cashway Lumber Co | Lisbon | OH |
| Cashway Lumber Co | Mogadore | OH |
| Cashway Lumber Co | Ontario | OH |
| Cashway Lumber Co | Sandusky | OH |
| CASTALIA CEMENT COMPANY | CASTALIA | OH |
| CASTALIA PORTLAND CEMENT COMPANY | CASTALIA | OH |
| CASTALLOY | BROOKPARK | OH |
| Castle Homes | Akron | OH |
| Castle Lumber Company | Canton | OH |
| Castruction Co | Boardman/Youngs | OH |
| CATALYTIC INC – PVC & RECOVERY PLANT | PIQUA | OH |
| Catawba Apartment | Worthington | OH |
| CAXTON BUILDING COMPANY | CLEVELAND | OH |
| Cdr Oscar | Cleveland | OH |
| Ce Glass Company | Lancaster | OH |
| CECIL PECK | CLEVELAND | OH |
| CEDAR APARTMENTS | CLEVELAND | OH |
| CEDAR LOCUST – HOUSING FOR ELDERLY | CANTON | OH |
| CEDAR ROAD APARTMENTS | CLEVELAND | OH |
| CEDAR SCHOOL – BOILER ROOM | CANTON | OH |
| CEDARVILLE BOARD OF EDUCATION | CEDARVILLE | OH |
| CEDER APARTMENTS | CLEVELAND | OH |
| CEI | CLEVELAND | OH |
| Cei Powerhouse | Cleveland | OH |
| CELINA STEARIC ACID COMPANY | CELINA | OH |
| Cellulo Company (The) | Sandusky | OH |
| CELOTEX CORP. | LOCKLAND | OH |
| Celotex Corp. (The) | Lockland | OH |
| Celotex Corporation | Lockland | OH |
| CELOTEX CORPORATION | FORT CLINTON | OH |
| CELOTEX CORPORATION | CLEVELAND | OH |
| CENTERIOR ENERGY CORPORATION | ASHTABULA | OH |
| CENTRA SALES CO. | CLEVELAND | OH |
| CENTRAL ALLOY STEEL CORPORATION | CANTON | OH |
| CENTRAL ALUMINUM | COLUMBUS | OH |
| CENTRAL AVE. SHOPS | TOLEDO | OH |
| CENTRAL BRANCH | DAYTON | OH |
| CENTRAL BRANCH NATIONAL HOME FOR D.V.S. | DAYTON | OH |
| CENTRAL BRASS | CLEVELAND | OH |
| CENTRAL CATHOLIC HIGH SCHOOL – BOILER ROOM | CANTON | OH |
| CENTRAL CONCRETE SUPPLY | LIMA | OH |
| CENTRAL FOUNDRIES DIVISION GMC | DEFIANCE | OH |
| Central Foundry | Defiance | OH |
| CENTRAL FOUNDRY DIV INC | DEFIANCE | OH |
| CENTRAL FOUNDRY DIVISION | DEFIANCE | OH |
| CENTRAL FURNACE COMPANY | CLEVELAND | OH |
| CENTRAL FURNACE COMPANY | MASSILLON | OH |
| CENTRAL HEATING COMPANY | TOLEDO | OH |
| CENTRAL JUNIOR HIGH SCHOOL – EDISON BOULEVARD | XENIA | OH |
| CENTRAL MARKET STREET RAILWAY COMPANY | COLUMBUS | OH |
| CENTRAL NATIONAL BANK | CLEVELAND | OH |
| Central Ohio Light & Power | Bluffton | OH |
| CENTRAL OHIO LIGHT & POWER CO. – WOODCOCK STATION | BLUFFTON | OH |
| CENTRAL SILICA COMPANY | GLASSROCK | OH |
| CENTRAL SILICA COMPANY | ZANESVILLE | OH |
| CENTRAL STATE UNIVERSITY – CULTURAL AND PERFORMING ARTS CENTER | WILBERFORCE | OH |
| CENTRAL STEEL COMPANY | MASSILLON | OH |
| CENTRAL SUPPLY PLUMBING | WOODLAWN | OH |
| CENTRAL THOMSON HOUSTON COMPANY | CINCINNATI | OH |
| CENTRAL TRUST – CAFETERIA – 310 RACE STREET | CINCINNATI | OH |
| CENTRAL UNION DEPOT AND RAILWAY COMPANY | CINCINNATI | OH |
| CENTRAL UNION TELEPHONE BUILDING | COLUMBUS | OH |
| CENTRIA | CLAYSVILLE | OH |
| CENTRIA, INCORPORATED | CAMBRIDGE | OH |
| CENTRIFUGAL CASTINGS | RAVENNA | OH |
| CENTURY DIE | FREMONT | OH |
| Century Industries | New Waterford | OH |
| CERRO COPPER & BRASS COMPANY | CLEVELAND | OH |
| CERTAINTEED PLANT | AVERY | OH |
| CERTIFIED | MAPLE HEIGHTS | OH |
| CERTIFIED ALLOYS | MAPLE HEIGHTS | OH |
| CERTIFIED ALLOYS | CLEVELAND | OH |
| Cesco plant | Crooksville | OH |
| CHAFER AND BECHER | CLEVELAND | OH |
| CHAMPAIGN MACHINE AND FORGING COMPANY | CLEVELAND | OH |
| CHAMPION BAR AND KNIFE COMPANY | SPRINGFIELD | OH |
| CHAMPION COATED PAPER COMPANY | HAMILTON | OH |
| CHAMPION INTERNATIONAL CORPORATION | HAMILTON | OH |
| Champion International Paper Mill | Hamilton | OH |
| Champion Machine & Forging | Cleveland | OH |
| CHAMPION MACHINE AND FORGING COMPANY | CLEVELAND | OH |
| Champion Paper | Chillicothe | OH |
| Champion Paper | Hamilton | OH |
| CHAMPION PAPER & FIBER CO. | HAMILTON | OH |
| CHAMPION PAPER & FIBER CO. – PIPE SHOP | HAMILTON | OH |
| Champion Paper Co. | Hamilton | OH |
| CHAMPION PAPER COMPANY | HAMILTON | OH |
| CHAMPION PAPER COMPANY – 502 HEATON STREET | HAMILTON | OH |
| CHAMPION PAPER COMPANY – BUILDING 153 | HAMILTON | OH |
| CHAMPION PAPERS, INCORPORATED | HAMILTON | OH |
| CHAMPION SPARK PLUG COMPANY | TOLEDO | OH |
| Champion Steel Co. | Orwell | OH |
| CHAMPION WORKS | SPRINGFIELD | OH |
| CHAMPLAIN | CLEVELAND | OH |
| CHANDLER PRICE COMPANY | CLEVELAND | OH |
| CHARLES BOLDT COMPANY | CINCINNATI | OH |
| CHARLES F. KETTERLING MEMORIAL | DAYTON | OH |
| CHARLES G. HARTJE / HARTJE BROTHERS PAPER COMPANY | TORONTO | OH |
| CHARLES HOFFMAN COMPANY | MANSFIELD | OH |
| Charles Murphy, General Contractor | Coal Grove | OH |
| CHARLES PFIZER & COMPANY, INCORPORATED | GIBSONBURG | OH |
| CHARLES SUCHER PACKING COMPANY | DAYTON | OH |
| Charles Taylor & Sons | Cincinnati | OH |
| Chase Brass & Copper | Euclid | OH |
| Chase Brass & Copper | Cleveland | OH |
| CHASE BRASS & COPPER CO INC | CLEVELAND | OH |
| CHASE BRASS & COPPER CO. | CLEVELAND | OH |
| Chase Brass & Copper Company | Cleveland | OH |
| Chase Brass & Copper Company | Euclid | OH |
| CHATFIELD MANUFACTURING COMPANY | CARTHAGE | OH |
| Chattanooga Glass Co | Mount Vernon | OH |
| CHEASAPEAKE & OHIO RAILROAD | HAMILTON | OH |
| CHEMICAL ABSTRACT BUILDING | COLUMBUS | OH |
| Chemical Materials | Cleveland | OH |
| CHEMICAL PRODUCTS COMPANY | READING | OH |
| CHEMICAL PRODUCTS PLANT | CLEVELAND | OH |
| CHEMICAL PRODUCTS WORKS | CLEVELAND | OH |
| Chemical Rubber Company | Cleveland | OH |
| Chemidyne Corporation | Macedonia | OH |
| CHENEY PULP & PAPER CO | FRANKLIN | OH |
| CHERRY VALLEY IRON WORKS | LEETONIA | OH |
| CHESAPEAKE AND OHIO RAILROAD COMPANY | TOLEDO | OH |
| CHESAPEAKE AND OHIO RAILROAD COMPANY | SUMMIT | OH |
| CHEVROLET | TOLEDO | OH |
| CHEVROLET | CLEVELAND | OH |
| Chevrolet Division of General Motors Co. | Norwood | OH |
| CHEVROLET MOTOR DIV GMC | TOLEDO | OH |
| Chevrolet Motor Division | Parma | OH |
| CHEVROLET MOTOR PLANT | BROOKPARK | OH |
| Chevrolet Plant | Toledo | OH |
| CHEVROLET TRANSMISSION PLNT | TOLEDO | OH |
| CHEVROLET, DIVISION OF GENERAL MOTORS CORPORATION | NORWOOD | OH |
| CHEVROLET, DIVISION OF GENERAL MOTORS CORPORATION | LORDSTOWN | OH |
| CHEVRON – #61 & #62 & #63 – PO BOX 38014 | CINCINNATI | OH |
| CHEVRON ASPHALT CO | NORTH BEND | OH |
| CHEVRON ASPHALT CO. | CLEVES | OH |
| CHEVRON ASPHALT COMPANY | CINCINNATI | OH |
| CHEVRON ASPHALT COMPANY | NORTH BEND | OH |
| CHEVRON ASPHALT COMPANY | COLUMBUS PARK | OH |
| CHEVRON ASPHALT COMPANY | BELPRE | OH |
| CHEVY | CLEVELAND | OH |
| CHICAGO AND TOLEDO RAILWAY COMPANY | TOLEDO | OH |
| CHICAGO BRIDGE & IRON CO | LIMA | OH |
| CHICAGO, INDIANA AND SOUTHERN RAILROAD COMPANY | CLEVELAND | OH |
| Childers Products | Cleveland | OH |
| CHILDREN`S HOME | CINCINNATI | OH |
| CHILDREN`S HOSPITAL | CINCINNATI | OH |
| CHILDREN`S MENTAL HOSPITAL | HAMILTON | OH |
| CHILDREN’S HOSPITAL – HEATING PLANT | CINCINNATI | OH |
| CHILLICLOTHE MILLS REC AREA 1 | CHILLICOTHE | OH |
| CHILLICOTHE BOILER #7 | CHILLICOTHE | OH |
| CHILLICOTHE HIGH SCHOOL | CHILLICOTHE | OH |
| CHILLICOTHE MILLS – REC AREA #1 | CHILLICOTHE | OH |
| CHILLICOTHE PAPER | CHILLICOTHE | OH |
| CHILLICOTHE PAPER COMPANY | CHILLICOTHE | OH |
| CHILLICOTHE PAPER COMPANY | CHILLICOTHE, ROSS COUNTY | OH |
| CHILLICOTHE TIRE AND RUBBER COMPANY | CHILLICOTHE | OH |
| CHITTENDEN HOTEL | COLUMBUS | OH |
| CHOFFIN VOCATIONAL TECHNICAL SCHOOL | YOUNGSTOWN | OH |
| CHRIST HOSPITAL | CINCINNATI | OH |
| CHRIST HOSPITAL | EVENDALE | OH |
| CHRISTIAN MOERLEIN BREWING COMPANY | CINCINNATI | OH |
| Chrome Alloy | Bucyrus | OH |
| Chrysler | Dayton | OH |
| CHRYSLER | PERRYSBURG | OH |
| Chrysler | Twinsburg | OH |
| CHRYSLER | BOWLING GREEN | OH |
| CHRYSLER | FOSTORIA | OH |
| CHRYSLER CORP | PERRYSBURG | OH |
| CHRYSLER CORP – AIRTEMP DIVISION | DAYTON | OH |
| CHRYSLER CORP – TOLEDO MACHINING PLANT | PERRYSBURG | OH |
| CHRYSLER CORP. | DAYTON | OH |
| CHRYSLER CORPORATION | TWINSBURG | OH |
| CHRYSLER CORPORATION | TOLEDO | OH |
| CHRYSLER CORPORATION, JEEP DIVISION | TOLEDO | OH |
| CHURCH OF CHRIST SCIENTIST | CLEVELAND | OH |
| CINCINATI CHEMICAL WORKS | NORWOOD | OH |
| CINCINATTI WORKHOUSE | LAMPING | OH |
| CINCINNATI ABBATOIR COMPANY | CINCINNATI | OH |
| CINCINNATI AND COLUMBUS TRACTION COMPANY | CINCINNATI | OH |
| CINCINNATI AND NEWPORT RAILWAY COMPANY | CINCINNATI | OH |
| CINCINNATI BELL | CINCINNATI | OH |
| CINCINNATI BREWING COMPANY | HAMILTON | OH |
| CINCINNATI BULK MAIL | SHARONVILLE | OH |
| CINCINNATI CAR COMPANY | CINCINNATI | OH |
| CINCINNATI CHEMICAL COMPANY | CINCINNATI | OH |
| CINCINNATI CHEMICAL WORKS | ST. BERNARD | OH |
| CINCINNATI CHEMICAL WORKS | NORWOOD | OH |
| CINCINNATI CHILDREN’S HOSPITAL & MEDICAL CENTER | CINCINNATI | OH |
| CINCINNATI CLUB | CINCINNATI | OH |
| CINCINNATI COFFIN COMPANY | CINCINNATI | OH |
| CINCINNATI CORRIGATING COMPANY | CINCINNATI | OH |
| CINCINNATI COUNTRY CLUB – GRANDIN ROAD | CINCINNATI | OH |
| CINCINNATI DRUM | EVANDALE | OH |
| CINCINNATI ELECTRONICS | CINCINNATI | OH |
| Cincinnati Gas & Electric | Columbus Park | OH |
| Cincinnati Gas & Electric – Dicks Creek Power Station Compressor Building | MONROE | OH |
| Cincinnati Gas & Electric Co – General Electric – Miami Fort Station | North Bend | OH |
| CINCINNATI GAS & ELECTRIC CO – MIAMI FORT | COLUMBIA PARK | OH |
| CINCINNATI GAS & ELECTRIC CO – WALTER BECKJORD | NEW RICHMOND | OH |
| Cincinnati Gas & Electric Co – Walter C. Beckjord Generating Station | New Richmond | OH |
| Cincinnati Gas & Electric Co.- Beckjord Generating Station | New Richmond | OH |
| Cincinnati Gas & Electric Company | Columbia Park | OH |
| CINCINNATI GAS & ELECTRIC COMPANY – MIAMI FORT STATION | NORTH BEND | OH |
| CINCINNATI GAS & ELECTRIC COMPANY- WALTER C. BECKJORD GENERATING STATION | NEW RICHMOND | OH |
| Cincinnati Gas & Electric Headquarters | Cincinnati | OH |
| Cincinnati Gas & Electric Headquarters 14th Floor | Cincinnati | OH |
| CINCINNATI GAS & ELECTRIC; MIAMI FORT STATION | NORTH BEND | OH |
| Cincinnati Gas and Electric Co. Power Plant | Cincinnati | OH |
| CINCINNATI GAS AND ELECTRIC COMPANY – MIAMI FORT GENERATING STATION | NORTH BEND | OH |
| CINCINNATI GAS AND ELECTRIC COMPANY – MIAMI FORT STATION | NORTH BEND | OH |
| CINCINNATI GAS AND ELECTRIC COMPANY – PLUM STREET STATION | CINCINNATI | OH |
| CINCINNATI GAS AND ELECTRIC COMPANY AND DAYTON POWER AND LIGHT COMPANY – ZIMMER POWER PLANT | CINCINNATI | OH |
| CINCINNATI GAS LIGHT AND COKE COMPANY – GAS PLANT | CINCINNATI | OH |
| Cincinnati Gasket | Cincinnati | OH |
| Cincinnati General Hospital | Cincinnati | OH |
| CINCINNATI GENERAL HOSPITAL – 234 GOODMAN AVENUE | CINCINNATI | OH |
| CINCINNATI GYMNASUIM | CINCINNATI | OH |
| CINCINNATI ICE MACHINE COMPANY | CINCINNATI | OH |
| CINCINNATI ICE MANUFACTURING AND COLD STORAGE COMPANY | CINCINNATI | OH |
| Cincinnati Inc | Cincinnati | OH |
| CINCINNATI INDUSTRIES INC | CINCINNATI | OH |
| CINCINNATI MACHINE | CINCINNATI | OH |
| CINCINNATI MACHINE, A UNOVA COMPANY | CINCINNATI | OH |
| CINCINNATI MASONIC TEMPLE COMPANY | CINCINNATI | OH |
| CINCINNATI MILACRON | WILMINGTON | OH |
| CINCINNATI MILACRON | CINCINNATI | OH |
| CINCINNATI MILACRON – FLY ASH COLLECTOR | CINCINNATI | OH |
| Cincinnati Millicron | Cincinnati | OH |
| CINCINNATI MILLING | CINCINNATI | OH |
| Cincinnati Milling Co. | Cincinnati | OH |
| CINCINNATI MILLING MACHINE CO | CINCINNATI | OH |
| Cincinnati Milling Machine Company | Cincinnati | OH |
| Cincinnati Milling Machine Company | Wilmington | OH |
| CINCINNATI MILLING MACHINE COMPANY | SOUTH LEBANON | OH |
| Cincinnati Municipal Airport | Cincinnati | OH |
| CINCINNATI MUSIC HALL ASSOCIATION | CINCINNATI | OH |
| CINCINNATI NORTHERN TRACTION COMPANY | HAMILTON | OH |
| CINCINNATI POST OFFICE | CINCINNATI | OH |
| CINCINNATI REFINERY | CLEVES | OH |
| CINCINNATI REFINERY – GULF TANK #61 | CLEVES | OH |
| CINCINNATI REFINERY – GULF TANK #62 | CLEVES | OH |
| CINCINNATI REFINERY – GULF TANK #63 – BOND 62 | CLEVES | OH |
| CINCINNATI REFINERY – GULF TANKS #9 & #202 | CLEVES | OH |
| CINCINNATI RUBBER MANUFACTURING COMPANY | CINCINNATI | OH |
| CINCINNATI RUBBER MANUFACTURING COMPANY | NORWOOD | OH |
| CINCINNATI SAVINGS CURTAIN WALL | CINCINNATI | OH |
| CINCINNATI SOAP COMPANY | DAYTON | OH |
| CINCINNATI SPECIALTIES | CINCINNATI | OH |
| CINCINNATI STREET RAILWAY COMPANY | CINCINNATI | OH |
| CINCINNATI SUEDE | CINCINNATI | OH |
| CINCINNATI TERMINAL WAREHOUSE COMPANY | CINCINNATI | OH |
| CINCINNATI TRACTION COMPANY | CINCINNATI | OH |
| CINCINNATI TRACTION COMPANY – PENDLETON POWER STATION | CINCINNATI | OH |
| CINCINNATI UNION TERMINAL | CINCINNATI | OH |
| CINCINNATI UNION TERMINAL COMPANY | CINCINNATI | OH |
| Cincinnati Water Works – Kellogg Avenue | Cincinnati | OH |
| CINCINNATI WATER WORKS – RIVER PUMPING STATION | CINCINNATI | OH |
| CINCINNATI WORK HOUSE | CINCINNATI | OH |
| CINCINNATI, GEORGETOWN AND PORTSMOUTH RAILROAD | OLIVE BRANCH | OH |
| CINCINNATI, MILFORD AND LOVELAND TRACTION COMPANY | MILFORD | OH |
| CINCINNATI, NEWPORT AND COVINGTON RAILWAY | CINCINNATI | OH |
| CIRCLEVILLE HIGH SCHOOL | CIRCLEVILLE | OH |
| CIRCLEVILLE LIGHT AND POWER COMPANY – POWER PLANT | CIRCLEVILLE | OH |
| CITCO | CHARDON | OH |
| CITIZENS ELECTRIC RAILWAY LIGHT AND POWER COMPANY – POWER PLANT | MANSFIELD | OH |
| CITIZENS’ LIGHTING & HEATING COMPANY – POWER PLANT | TOLEDO | OH |
| CITY AND SUBURBAN TELEGRAPH ASSOCIATION | CINCINNATI | OH |
| CITY ASBESTOS COMPANY | CLEVELAND | OH |
| CITY AUTO STAMPING – TOLEDO TERMINAL RR | TOLEDO | OH |
| CITY AUTO STAMPING CO., INC. | TOLEDO | OH |
| CITY HALL | ATHENS | OH |
| CITY HALL | CINCINNATI | OH |
| CITY HALL – PARKING DECK | TOLEDO | OH |
| CITY HOSPITAL | CLEVELAND | OH |
| CITY HOSPITAL OF AKRON | AKRON | OH |
| CITY ICE DELIVERY COMPANY | CUMMINSVILLE | OH |
| CITY OF BELLEFONTAINE – WATER WORKS | BELLEFONTAINE | OH |
| City of Cleveland | Cleveland | OH |
| City of Cleveland – Lake Road Generating Station | Cleveland | OH |
| City of Cleveland – Municipal Light Plant | Cleveland | OH |
| City of Cleveland – Southerly Wastewater Treatment Plant | Cuyahoga Heights | OH |
| City of Cleveland – Southerly Wastewater Treatment Plant – Blower Building | Cuyahoga Heights | OH |
| CITY OF CLEVELAND BOYS FARM | HUDSON | OH |
| CITY OF CLEVELAND DIVISION AVE. PUMPING STATION | CLEVELAND | OH |
| CITY OF CLEVELAND FAIRMOUNT PUMPING STATION | CLEVELAND | OH |
| CITY OF CLEVELAND WATER WORKS, KIRKLAND STREET PUMPING STATION | CLEVELAND | OH |
| City of Columbus – Gas Turbine Station | Columbus | OH |
| CITY OF COLUMBUS – MUNICIPAL LIGHT PLANT | COLUMBUS | OH |
| CITY OF COLUMBUS – REFUSE AND COAL FIRED MUNICIPAL ELECTRIC PLANT | COLUMBUS | OH |
| CITY OF DAYTON WATER WORKS PUMPING STATION | DAYTON | OH |
| City of Dover – Municipal Light Plant | Dover | OH |
| City of Euclid – Sewage Disposal Plant | Euclid | OH |
| CITY OF GREENFIELD – WATER TREATMENT PLANT | GREENFIELD | OH |
| City of Hamilton – Dept of Public Utilities – Third Street Power Plant | HAMILTON | OH |
| CITY OF HAMILTON – Municipal Electric Plant | HAMILTON | OH |
| CITY OF HAMILTON – THIRD STREET POWER PLANT | HAMILTON | OH |
| CITY OF HAMILTON MUNICIPAL BLDG | HAMILTON | OH |
| CITY OF KENTON – WATER WORKS | KENTON | OH |
| CITY OF LEBANON – MUNICIPAL ELECTRIC LIGHT PLANT | LEBANON | OH |
| CITY OF LONDON – MUNICIPAL LIGHT PLANT | LONDON | OH |
| City of Napoleon Municipal Water & Electric | Napoleon | OH |
| CITY OF NEWARK OHIO | NEWARK | OH |
| CITY OF NORWALK – MUNICIPAL LIGHT PLANT | NORWALK | OH |
| City of Oberlin – Municipal Light and Power Plant | Oberlin | OH |
| CITY OF ORRVILLE – MUNICIPAL POWER PLANT | ORRVILLE | OH |
| City of Painesville Power | Painesville | OH |
| CITY OF PIQUA | PIQUA | OH |
| CITY OF SALEM – WATER WORKS PUMPING STATION | SALEM | OH |
| City of Shelby – Municipal Light Plant | Shelby | OH |
| CITY OF SPRINGFIELD – WATER WORKS & LIGHT PLANT | SPRINGFIELD | OH |
| CITY OF ST MARYS | ST. MARY’S | OH |
| CITY OF ST. BERNARD – MUNICIPAL WATERWORKS AND LIGHT PLANT | ST. BERNARD | OH |
| CITY OF ST. MARYS – MUNICIPAL ELECTRIC LIGHT AND WATER PLANT | ST. MARYS | OH |
| CITY OF ST. MARYS – MUNICIPAL POWER PLANT | ST. MARYS | OH |
| CITY OF ST. MARYS – ST. MARYS MUNICIPAL POWER PLANT | ST. MARYS | OH |
| City of Toledo – Bay View Treatment Plant | Toledo | OH |
| CITY OF TOLEDO – WATER WORKS – BROADWAY PUMPING STATION | TOLEDO | OH |
| CITY OF TROY – POWER PLANT | TROY | OH |
| City of Troy Electric Plant | Troy | OH |
| CITY OF TROY POWER PLANT | TROY | OH |
| CITY OF WOOSTER – WATERWORKS BOOSTER STATION | WOOSTER | OH |
| CITY RAILWAY COMPANY | DAYTON | OH |
| City Water Department | Alliance | OH |
| City Water Department | Fostoria | OH |
| City Water Department | Lorain | OH |
| City Water Department | Newark | OH |
| CIVIL AERONAUTIC ADM. | OBERLIN | OH |
| CIVIL AERONAUTIC ADMINISTRATION | OBERLIN | OH |
| CLARK | CLEVELAND | OH |
| CLARK | EUCLID | OH |
| CLARK | MANSFIELD | OH |
| CLARK & GREATER CLEVE GARDEN CENTER | CLEVELAND | OH |
| CLARK & J&L STEEL | CLEVELAND | OH |
| CLARK ASBESTOS | CLEVELAND | OH |
| Clark Asbestos Co | Cleveland | OH |
| CLARK ASBESTOS CO. | CLEVELAND | OH |
| Clark Asbestos Company | Cleveland | OH |
| CLARK ASBESTOS COMPANY | OBERLIN | OH |
| CLARK ASBESTOS COMPANY | LORAIN | OH |
| CLARK EQUIPMENT CO | LIMA | OH |
| CLARK EQUIPMENT COMPANY | CLEVELAND | OH |
| CLARK GRAVE VAULT CO | COLUMBUS | OH |
| CLARK GRAVE VAULT COMPANY | COLUMBUS | OH |
| CLARK REFINING AND MARKETING, INCORPORATED | LIMA | OH |
| Clark Restaurant | Youngstown | OH |
| CLARKINS DEPARTMENT STORE | YOUNGSTOWN | OH |
| CLEAVER BROOKS | SUNBURY | OH |
| CLEVE BEARING PROD | CLEVELAND | OH |
| CLEVE CAP SCREW CO | CLEVELAND | OH |
| CLEVELAND & SANDUSKY BREWING CORP. | CLEVELAND | OH |
| CLEVELAND ADE MANUFACTURING COMPANY | CARLTON | OH |
| CLEVELAND AIRCRAFT | AVON | OH |
| CLEVELAND AKRON BAG COMPANY | CLEVELAND | OH |
| CLEVELAND ALLOY | BEREA | OH |
| CLEVELAND AND ELYRIA ELECTRIC RAILWAY COMPANY – POWER HOUSE | CLEVELAND | OH |
| CLEVELAND AND SOUTHWESTERN RAILWAY COMPANY | NORWALK | OH |
| CLEVELAND AND SOUTHWESTERN TRACTOR COMPANY | ELYRIA | OH |
| CLEVELAND ARCADE COMPANY | CLEVELAND | OH |
| CLEVELAND ARM H | CLEVELAND | OH |
| CLEVELAND ARMATURE | CLEVELAND | OH |
| CLEVELAND AUTOMOBILE COMPANY | EAST CLEVELAND | OH |
| CLEVELAND AXLE MANUFACTURING COMPANY | CANTON | OH |
| CLEVELAND BAKERY | CLEVELAND | OH |
| Cleveland Board of Education | Cleveland | OH |
| Cleveland Board of Education Schools | Cleveland | OH |
| CLEVELAND BUILDERS SUPPLY CO. | CLEVELAND | OH |
| CLEVELAND CAP SCREW CO | CLEVELAND | OH |
| CLEVELAND CAP SCREW CO. | CLEVELAND | OH |
| CLEVELAND CAP SCREW COMPANY | CLEVELAND | OH |
| CLEVELAND CITY CABLE RAILWAY COMPANY | CLEVELAND | OH |
| CLEVELAND CITY FORGE AND IRON COMPANY | CLEVELAND | OH |
| CLEVELAND CITY RAILWAY COMPANY | CLEVELAND | OH |
| CLEVELAND CITY WATER WORKS – WHISKEY ISLAND POWER PLANT | CLEVELAND | OH |
| CLEVELAND CLIFFS IRON COMPANY | CLEVELAND | OH |
| CLEVELAND CLINIC | CLEVELAND | OH |
| CLEVELAND CLINIC FOUNDATION | CLEVELAND | OH |
| CLEVELAND CLINIC FOUNDATION -POWER HOUSE | CLEVELAND | OH |
| CLEVELAND CLINIC FOUNDATION, MAIN PENTHOUSE | CLEVELAND | OH |
| CLEVELAND CLINIC HOSPITAL | CLEVELAND | OH |
| CLEVELAND CLINIC HOSPOTAL – NEW E 90 ST WING | CLEVELAND | OH |
| CLEVELAND CLINIC NEW WING | CLEVELAND | OH |
| CLEVELAND CRANE & ENGINEERING COMPANY | WICKLIFFE | OH |
| CLEVELAND CRANE AND ENGINEERING COMPANY | WICKLIFFE | OH |
| CLEVELAND CRANE, DIVISION OF MCNEIL MACHINE AND ENGINEERING COMPANY | WICKLIFFE | OH |
| Cleveland Diesel Engine Division of GMC | Cleveland | OH |
| CLEVELAND DIESEL ENGINGEERING WORKS, DIVISION OF GENERAL MOTORS CORPORATION | CLEVELAND | OH |
| Cleveland Electric Ill Co | Avon Lake | OH |
| CLEVELAND ELECTRIC ILLUMINATING – Ashtabula Plant | ASHTABULA | OH |
| CLEVELAND ELECTRIC ILLUMINATING – AVON LAKE STATION | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING – Avon Power Plant | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING – CANAL RD PLT | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING – Clarkwood Ave | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING – East Lake Power Plant | EASTLAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING – EAST LAKE STATION | EAST LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING – LAKE SHORE | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING – PLT MILES WH | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING CO | CLEVELAND | OH |
| Cleveland Electric Illuminating Co – Avon Lake Power Plant | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING CO. | ASHTABULA | OH |
| Cleveland Electric Illuminating Co. | Cleveland | OH |
| Cleveland Electric Illuminating Co. | Willoughby | OH |
| Cleveland Electric Illuminating Co. | Astabula | OH |
| Cleveland Electric Illuminating Co. | Avon Lake | OH |
| Cleveland Electric Illuminating Co. | Perry | OH |
| Cleveland Electric Illuminating Co. | Independence | OH |
| Cleveland Electric Illuminating Co.- Ashtabula Power Plant | Ashtabula | OH |
| Cleveland Electric Illuminating Co.- Avon Lake Power Plant | Avon Lake | OH |
| Cleveland Electric Illuminating Co.- Eastlake Power Plant | Eastlake | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – ASHTABULA C STATION | ASHTABULA | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – ASHTABULA PLANT | ASHTABULA | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – ASHTABULA PLANT – PLANT A, B, & C | ASHTABULA | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – ASHTABULA PLANT – PLANT C | ASHTABULA | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – AVON LAKE POWER PLANT – PLANT C | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – AVON LAKE POWER PLANT | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – CANAL STREET PLANT | CLEVELAND | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – EASTLAKE PLANT – UNIT 5 | EASTLAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY – EASTLAKE STATION | EASTLAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATING COMPANY- AVON LAKE POWER PLANT | AVON LAKE | OH |
| CLEVELAND ELECTRIC ILLUMINATION COMPANY – ASHTABULA PLANT C | ASHTABULA | OH |
| CLEVELAND ELECTRIC LIGHT COMPANY – CANAL STREET PLANT | CLEVELAND | OH |
| CLEVELAND ELECTRIC RAILWAY COMPANY – POWER STATION | CLEVELAND | OH |
| CLEVELAND ELECTRO ALLOYS | CLEVELAND | OH |
| CLEVELAND ELECTRO METALS | CLEVELAND | OH |
| CLEVELAND ELECTROMETALS | CLEVELAND | OH |
| CLEVELAND ENERGY RESOURCE | CLEVELAND | OH |
| CLEVELAND FAUCET COMPANY | CLEVELAND | OH |
| CLEVELAND FOUNDRY COMPANY | CLEVELAND | OH |
| CLEVELAND FROG AND CROSSING COMPANY | CLEVELAND | OH |
| CLEVELAND FROG AND CROSSING COMPANY | NEWBURG | OH |
| CLEVELAND FURNACE COMPANY | CLEVELAND | OH |
| CLEVELAND GENERAL HOSPITAL | CLEVELAND | OH |
| CLEVELAND GRAIN CO | MANSFIELD | OH |
| CLEVELAND GRAPHITE BRONZE CO. | CLEVELAND | OH |
| Cleveland Graphite Bronze Company | Caldwell | OH |
| Cleveland Graphite Bronze Company | Cleveland | OH |
| CLEVELAND HARDWARE COMPANY | CLEVELAND | OH |
| CLEVELAND HIPPODROME COMPANY | CLEVELAND | OH |
| Cleveland Hopkins Airport | Cleveland | OH |
| Cleveland Hopkins International Airport | Cleveland | OH |
| CLEVELAND ICE AND REFIGERATING COMPANY | CLEVELAND | OH |
| CLEVELAND LAUNDRY COMPANY | CLEVELAND | OH |
| Cleveland Medical Center | Cleveland | OH |
| CLEVELAND METAL | CLEVELAND | OH |
| CLEVELAND METAL ABRASIVE | CLEVELAND | OH |
| CLEVELAND METAL PRODUCTS COMPANY | CLEVELAND | OH |
| CLEVELAND METRO GENERAL HOSPITAL | CLEVELAND | OH |
| CLEVELAND METROPOLITAN – HOUSING AUTHORITY – CEDAR APARTMENTS | CLEVELAND | OH |
| CLEVELAND METROPOLITAN GENERAL HOSPITAL | CLEVELAND | OH |
| CLEVELAND METROPOLITAN HOSPITAL | CLEVELAND | OH |
| CLEVELAND METROPOLITAN HOSPITAL – NORTH BUILDING – PHASE 11A – 3395 SCRANTON ROAD | CLEVELAND | OH |
| CLEVELAND METROPOLITAN HOSPITAL, NORTH BUILDING, PHASE 11A, 3395 SCRANTON RD. | CLEVELAND | OH |
| CLEVELAND METROPOLITAN HOUSING AUTHORITY – Cedar Apts. | CLEVELAND | OH |
| CLEVELAND MILLING COMPANY | CLEVELAND | OH |
| CLEVELAND MINE | CLEVELAND | OH |
| CLEVELAND MUSEUM OF ART | CLEVELAND | OH |
| CLEVELAND OAK BELT | CLEVELAND | OH |
| CLEVELAND PNEUMATIC | CLEVELAND | OH |
| CLEVELAND PNEUMATIC TOOL | CLEVELAND | OH |
| CLEVELAND PRECISION | CLEVELAND | OH |
| CLEVELAND PRECISION | EUCLID | OH |
| CLEVELAND PROVISION COMPANY | CLEVELAND | OH |
| CLEVELAND PUBLIC LIBRARY | CLEVELAND | OH |
| CLEVELAND PUBLIC POWER | CLEVELAND | OH |
| CLEVELAND QUARRIES COMPANY | SOUTH AMHERST | OH |
| CLEVELAND QUARRIES COMPANY | AMHERST | OH |
| CLEVELAND QUARRIES, INC | SOUTH AMHERST | OH |
| CLEVELAND RAILWAY COMPANY | CLEVELAND | OH |
| CLEVELAND RAILWAY COMPANY – CEDAR AVE. POWER HOUSE | CLEVELAND | OH |
| CLEVELAND RAILWAY COMPANY – VIADUCT POWER HOUSE | CLEVELAND | OH |
| CLEVELAND REGIONAL SEWER DISTRICT | CUYAHOGA HEIGHTS | OH |
| CLEVELAND REGIONAL TREATMENT CENTER | CLEVELAND | OH |
| CLEVELAND RUBBER CORPORATION | CLEVELAND | OH |
| CLEVELAND SHIPBUILDING | LORAIN | OH |
| CLEVELAND SHOPPING NEWS COMPANY | CLEVELAND | OH |
| CLEVELAND STAMPING AND TOOL COMPANY | CLEVELAND | OH |
| CLEVELAND STATE HOSPITAL | CLEVELAND | OH |
| CLEVELAND STATE UNIV. | CLEVELAND | OH |
| CLEVELAND STATE UNIVERSITY – CLASSROOM & LECTURE BUILDING – EAST 22ND & CHESTER AVENUE | CLEVELAND | OH |
| CLEVELAND STATE UNIVERSITY, CLASSROOM & LECTURE BUILDING, EAST 22ND & CHESTER AVE. | CLEVELAND | OH |
| CLEVELAND STEVEDORE COMPANY | HURON | OH |
| CLEVELAND STONE COMPANY | NORTH AMHERST | OH |
| CLEVELAND THERMAL ENERGY | CLEVELAND | OH |
| CLEVELAND THERMAL ENERGY – CANAL ROAD PLANT | CLEVELAND | OH |
| CLEVELAND TRUST COMPANY BUILDING | CLEVELAND | OH |
| CLEVELAND TRUST COMPANY, COMPUTER CENTER | CLEVELAND | OH |
| Cleveland Trust Office Building | OH | |
| CLEVELAND TWIST DRILL COMPANY | CLEVELAND | OH |
| CLEVELAND UNION TERMINALS | CLEVELAND | OH |
| Cleveland Water Condition | Cleveland | OH |
| CLEVELAND WATER WORKS | CLEVELAND | OH |
| CLEVELAND WELDING AND MANUFACTURING COMPANY | CLEVELAND | OH |
| Cleveland Wire & Spring Company | Cleveland | OH |
| CLEVELAND WIRE PLANT | CLEVELAND | OH |
| CLEVELAND WORKS | CLEVELAND | OH |
| CLEVELAND WORKS – STATION 85-100 – JOHN E P RUNTY PIPE SHOP | CLEVELAND | OH |
| CLEVELAND WORKS EAST | CLEVELAND | OH |
| CLEVELAND WORSTED MILLS COMPANY | RAVENNA | OH |
| CLEVELAND WORSTED MILLS COMPANY | NEWBURG | OH |
| CLEVELAND WORSTED MILLS COMPANY | NEWBURGH | OH |
| CLEVELAND WORSTED MILLS COMPANY | CLEVELAND | OH |
| CLEVELAND WORSTER MILLS COMPANY | RAVENNA | OH |
| CLEVELAND, BEREA, ELYRIA AND OBERLIN RAILWAY COMPANY | CLEVELAND | OH |
| CLEVELAND, BEREA, ELYRIA AND OBERLIN RAILWAY COMPANY | ELYRIA | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY | COLUMBUS | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY | SHARONVILLE | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY | BELLEFONTAINE | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY COMPANY | SHARONVILLE | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY COMPANY | BELLEFONTAINE | OH |
| CLEVELAND, CINCINNATI, CHICAGO AND ST. LOUIS RAILWAY COMPANY | LINNDALE | OH |
| CLEVELAND, ELYRIA & WESTERN RAILWAY COMPANY – POWER STATION | ROCKPORT | OH |
| CLEVELAND, ELYRIA AND WESTERN RAILWAY | ELYRIA | OH |
| CLEVELAND, PAINESVILLE AND ASHTABULA RAILROAD COMPANY | CLEVELAND | OH |
| CLEVELAND, PAINESVILLE AND EASTERN RAILROAD COMPANY | CLEVELAND | OH |
| CLEVELAND, PAINESVILLE AND EASTERN RAILROAD COMPANY | WILLONGHBY | OH |
| CLEVELAND, PAINESVILLE AND EASTERN RAILROAD COMPANY | WILLOUGHBY | OH |
| CLEVELAND, PAINESVILLE AND EASTERN TRACTION COMPANY | PAINESVILLE | OH |
| CLEVELAND, SOUTHWESTERN AND COLUMBUS RAILWAY COMPANY | ELYRIA | OH |
| CLEVELAND, SOUTHWESTERN AND COLUMBUS RAILWAY COMPANY | CLEVELAND | OH |
| CLEVITE | MCCONNELSVILLE | OH |
| Clevite Corporation | Cleveland | OH |
| CLEVITE CORPORATION | BEDFORD | OH |
| CLEVITE ENGINE | CLEVELAND | OH |
| CLEVITE HARRIS PRODUCTS | MILAN | OH |
| CLEVITE RESEARCH CENTER | CLEVELAND | OH |
| CLIMAX TIRE AND RUBBER COMPANY | DELAWARE | OH |
| CLINTON MEMORIAL HOSPITAL | WILMINGTON | OH |
| CLOPAY BUILDING | CINCINNATI | OH |
| CLOVER LEAF SPEEDWAY | CLEVELAND | OH |
| CLOVERLEAF HIGH SCHOOL | CANTON | OH |
| CLOVERLEAF SCHOOL | CANTON | OH |
| CLOVERLEAF SPEEDWAY | CLEVELAND | OH |
| CLOW CORPORATION | COSHOCTON | OH |
| CLUB MONARCH | CLEVELAND | OH |
| CLUB PRODUCTS | CLEVELAND | OH |
| CLYDE – MUNICIPAL ELECTRIC LIGHT PLANT AND WATER WORKS | CLYDE | OH |
| Clyde Porcelain Steel Corporation | Clyde | OH |
| CLYFFSIDE BREWING COMPANY | CINCINNATI | OH |
| COCA COLA BOTTLING COMPANY | CINCINNATI | OH |
| COE MFG. | PAINESVILLE | OH |
| COGNIS CORPORATION | CINCINNATI | OH |
| COKE PLANT | YOUNGSTOWN | OH |
| COL WHSE | COLUMBUS | OH |
| Cold Metal Products | Youngstown | OH |
| COLE-LAYER TRUMBLE COMPANY | DAYTON | OH |
| COLIN GARDNER PAPER COMPANY | MIDDLETOWN | OH |
| COLLECTIVE CONTRACT | CINCINNATI | OH |
| College of Wooster, Auditorium | Wooster | OH |
| Colonial Refining Chemicals | Cleveland | OH |
| COLONIAL SALT COMPANY | SOUTH AKRON | OH |
| COLONIAL TERRACE APARTMENTS | MIDDLETOWN | OH |
| COLUMBIA AXLE COMPANY | CLEVELAND | OH |
| Columbia Cement Company | East Fultonham | OH |
| COLUMBIA CEMENT CORPORATION | EAST FULTONHAM | OH |
| COLUMBIA CEMENT CORPORATION | ZANESVILLE | OH |
| Columbia Chemical | Ironton | OH |
| COLUMBIA CHEMICAL COMPANY | BARBERTON | OH |
| COLUMBIA CHEMICAL DIVISIOIN | FULTONHAM | OH |
| COLUMBIA CHEMICAL DIVISION | BARBERTON | OH |
| Columbia Gas Systems | Columbia | OH |
| Columbia Gas Systems | Green Springs | OH |
| COLUMBIA H.C.A. HEALTHCARE | CANTON | OH |
| COLUMBIA ICE COMPANY | CLEVELAND | OH |
| COLUMBIA LNG | GREEN SPRINGS | OH |
| COLUMBIA LNG., INCORPORATED | GREEN SPRINGS | OH |
| COLUMBIA POWER COMPANY – COLUMBIA POWER STATION | CINCINNATI | OH |
| COLUMBIA SOUTHERN | CANTON | OH |
| COLUMBIA SOUTHERN CEMENT | BARBERTON | OH |
| COLUMBIA SOUTHERN CHEMICAL | BARBERTON | OH |
| Columbia Southern Chemical Company | Barberton | OH |
| COLUMBIA SOUTHERN CHEMICAL CORP. | BARBERTON | OH |
| COLUMBIA SOUTHERN CHEMICAL CORP. | CANTON | OH |
| COLUMBIA SOUTHERN CHEMICAL CORPORATION | BARBERTON | OH |
| COLUMBIA SOUTHERN CHEMICAL CORPORATION, SUBSIDIARY OF PITTSBURGH PLATE AND GLASS | BARBERTON | OH |
| COLUMBIA SOUTHERN PERSONAL BLDG. | CANTON | OH |
| COLUMBIA TIRE AND RUBBER COMPANY | COLUMBIANA | OH |
| COLUMBIAN CO | COLUMBUS | OH |
| COLUMBIAN STORAGE PLANT – COLUMBIAN STORAGE | BELOIT | OH |
| COLUMBIANA SOUTHERN CHURCH | COLUMBIANA | OH |
| Columbia-Southern Chem. Corp. | Barberton | OH |
| Columbua & Southern Ohio Electric Company | Columbia | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC | COLUMBUS | OH |
| Columbus & Southern Ohio Electric | Conesville | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC – CONESVILLE GENERATING STATION | CONESVILLE | OH |
| Columbus & Southern Ohio Electric – Picway Station | Columbus | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC (Conesville Generating Sta.) | CONESVILLE | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC (Picway Station) | LOCKBOURNE | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC (Poston Station) | ATHENS | OH |
| Columbus & Southern Ohio Electric Co | Columbus | OH |
| Columbus & Southern Ohio Electric Co | Graveport | OH |
| Columbus & Southern Ohio Electric Co | Groveport | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC CO. | CONESVILLE | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC CO. | LOCKBURNE | OH |
| COLUMBUS & SOUTHERN OHIO ELECTRIC COMPANY | COLUMBUS | OH |
| Columbus & Southern Ohio Electric Company | Groveport | OH |
| COLUMBUS AIRCRAFT DIV. | COLUMBUS | OH |
| COLUMBUS AND IRON AND STEEL COMPANY | COLUMBUS | OH |
| COLUMBUS AND SOUTHERN OHIO ELECTRIC COMPANY – BIG WALNUT POWER PLANT | GROVEPORT | OH |
| COLUMBUS AND SOUTHERN OHIO ELECTRIC COMPANY – CONESVILLE POWER PLANT | CONESVILLE | OH |
| Columbus and Southern Ohio Electric Power – Poston Generating Station | Athens | OH |
| COLUMBUS BOLT WORKS | COLUMBUS | OH |
| COLUMBUS BUGGY COMPANY | COLUMBUS | OH |
| COLUMBUS CENTER BLDG | COLUMBUS | OH |
| COLUMBUS CENTER BUILDING | COLUMBUS | OH |
| COLUMBUS CENTRAL RAILWAY COMPANY | COLUMBUS | OH |
| COLUMBUS COATED FABRICS | COLUMBUS | OH |
| COLUMBUS CONSOLIDATED STREET RAILROAD COMPANY | COLUMBUS | OH |
| COLUMBUS DISPATCH BUILDING, 34 S. 3RD ST. | COLUMBUS | OH |
| COLUMBUS EDISON ELECTRIC LIGHT COMPANY – POWER PLANT | COLUMBUS | OH |
| COLUMBUS ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | COLUMBUS | OH |
| COLUMBUS GENERAL DEPOT | COLUMBUS | OH |
| COLUMBUS IRON AND STEEL COMPANY | COLUMBUS | OH |
| COLUMBUS IRON AND STEEL COMPANY | SOUTH COLUMBUS | OH |
| COLUMBUS LONDON AND SPRINGFIELD STREET RAILWAY COMPANY | MIDWAY | OH |
| COLUMBUS LONDON AND SPRINGFIELD STREET RAILWAY COMPANY | SPRINGFIELD | OH |
| COLUMBUS OIL CLOTH COMPANY | COLUMBUS | OH |
| COLUMBUS PACKING COMPANY | COLUMBUS | OH |
| COLUMBUS PUBLIC SERVICE COMPANY | COLUMBUS | OH |
| Columbus PY Power & Light Company | Columbus | OH |
| Columbus PY Power & Light Company | Walnut Station | OH |
| COLUMBUS RAILWAY AND LIGHT COMPANY – POWER PLANT | COLUMBUS | OH |
| COLUMBUS RAILWAY COMPANY | COLUMBUS | OH |
| COLUMBUS RAILWAY POWER & LIGHT COMPANY – POWER HOUSE | COLUMBUS | OH |
| COLUMBUS RAILWAY, POWER AND LIGHT COMPANY – GROVEPORT POWER PLANT | GROVEPORT | OH |
| COLUMBUS SAVINGS AND TRUST COMPANY | COLUMBUS | OH |
| COLUMBUS SEWAGE PUMPING STATION | COLUMBUS | OH |
| COLUMBUS SHOPS | COLUMBUS | OH |
| COLUMBUS SHOW CASE COMPANY | COLUMBUS | OH |
| COLUMBUS SOUTHERN POWER | CONESVILLE | OH |
| COLUMBUS ST. SCHOOL | COLUMBUS | OH |
| COLUMBUS STATE HOSPITAL | COLUMBUS | OH |
| COLUMBUS STATE INSTITUTE | COLUMBUS | OH |
| COLUMBUS STEAM AND FURNACE COMPANY – FEDERAL VALLEY NO. 1 | BROADWELL | OH |
| COLUMBUS STEEL COMPANY | COLUMBUS | OH |
| Columbus Stove | Columbus | OH |
| COLUMBUS STREET RAILWAY COMPANY | COLUMBUS | OH |
| COLUMBUS UNION OIL CLOTH CO | COLUMBUS | OH |
| COLUMBUS WAREHOUSE | COLUMBUS | OH |
| COLUMBUS WATER WORKS – SCIOTO RIVER PUMPING STATION | COLUMBUS | OH |
| COLUMBUS WOOLEN MANUFACTURING COMPANY | COLUMBUS | OH |
| COLUMBUS, BUCKEYE, LAKE AND NEWARK TRACTION COMPANY | HEBRON | OH |
| COMBINED NORMAL AND INDUSTRIAL DEPARTMENT | WILBERFORCE | OH |
| COMBUSTION ENGINEERING | MIAMISBURG | OH |
| COMMERCIAL BOOKBINDING COMPANY | CLEVELAND | OH |
| COMMERCIAL FORGING COMPANY | CLEVELAND | OH |
| COMMERCIAL FORGINGS | CLEVELAND | OH |
| COMMERCIAL INSULATION CO | YOUNGSTOWN | OH |
| COMMERCIAL INSULATION COMPANY | YOUNGSTOWN | OH |
| Commercial Intertech | Youngstown | OH |
| Commercial Intertech & Shearing | Warren | OH |
| Commercial Intertech & Shearing | Youngstown | OH |
| COMMERCIAL MILLING COMPANY | CLEVELAND | OH |
| COMMERCIAL PIPING | YOUNGSTOWN | OH |
| COMMERCIAL SHEARING | YOUNGSTOWN | OH |
| COMMERCIAL SHEARING & STAMPING COMPANY | YOUNGSTOWN | OH |
| COMMONWEALTH AND SOUTHERN CORPORATION | TORONTO | OH |
| Community Hospital | Springfield | OH |
| COMPCO METAL PRODUCTS | YOUNGSTOWN | OH |
| Complete Insulation Company | Dayton | OH |
| COMPLETE INSULATION SERVICE INC. | DAYTON | OH |
| Complete Insulation Service, Inc. | Dayton | OH |
| COMPOSITE MEDI-FACILITY, AIRFORCE BASE | FAIRBORN | OH |
| CONAGRA | PERRYSBURGH | OH |
| CONCRETE MASON | ELYRIA | OH |
| Condominium Apartment, Stony Ridge Road | Sandusky | OH |
| CONESVILLE | CONESVILLE | OHIO |
| Conesville Power Station | Conesville | OH |
| CONNEAUT DIE CASTING | CONNEAUT | OH |
| CONNEAUT ELECTRIC LIGHT COMPANY – PLANT | CONNEAUT | OH |
| CONNEAUT SHOVEL COMPANY | CONNEAUT | OH |
| CONNECTOR IND. OF AM. | CIN | OH |
| Connex | Marietta | OH |
| Conrail | Youngstown | OH |
| Conrail | Bellefontaine | OH |
| Conrail | Buckeye | OH |
| CONSOL. IRON | CLEVELAND | OH |
| Consolidated Aluminum | Hannibal | OH |
| Consolidated Aluminum Corp. | Hannibal | OH |
| CONSOLIDATED BISCUIT COMP | MCCOMB | OH |
| Consolidated Biscuit Company | Mc Comb | OH |
| CONSOLIDATED ENGINEERING | CLEVELAND | OH |
| Consolidated Rail Corporation | Toledo | OH |
| CONSOLIDATED RAILROAD (CONRAIL) SHOPS | NOT PROVIDED | OH |
| CONSOLIDATED RAILWAY CORPORATION | HOBSON | OH |
| CONSOLIDATED RAILWAY CORPORATION, NEW YORK CENTRAL RAILROAD | WALBRIDGE | OH |
| CONSOLIDATED STREET RAILWAY COMPANY | TOLEDO | OH |
| CONSOLIDATED TELEPHONE – 5240 LESTER ROAD | Cincinnati | OH |
| CONSTELLATION STEEL MILL | CINCINNATI | OH |
| CONSUMERS BREWING COMPANY | NEWARK | OH |
| CONT. BAKERIES | CLEVELAND | OH |
| CONTAINER CORP OF AMERICA | CIRCLEVILLE | OH |
| CONTAINER CORP.* | CINCINATTI | OH |
| CONTAINER CORPORATION | CINCINNATI | OH |
| CONTAINER CORPORATION – BLUE ASH INDUSTRIAL PARK – 9960 ALLIANCE ROAD | CINCINNATI | OH |
| Container Corporation of America | Circleville | OH |
| CONTAINER CORPORATION OF AMERICA | CINCINNATI | OH |
| CONTAINER CORPORATION OF AMERICA | RED BANK | OH |
| CONTINENTAL AVIATION & ENGINEERING | TOLEDO | OH |
| CONTINENTAL AVIATION AND ENGINEERING COMPANY | TOLEDO | OH |
| Continental Can | Columbus | OH |
| CONTINENTAL CAN CO | VAN WERT | OH |
| CONTINENTAL CAN CO. | VAN WERT | OH |
| CONTINENTAL CAN COMPANY, INCORPORATED | MT. VERNON | OH |
| CONTINENTAL HOSPITAL | WESTLAKE | OH |
| CONTINENTAL SUGAR COMPANY | FINDLAY | OH |
| CONTINENTAL SUGAR COMPANY | FREMONT | OH |
| CONVENTION HALL | CINCINNATI | OH |
| CONWELL QUALITY TOOLS | MOGADARE | OH |
| COOK WELL STRAINER COMPANY | CINCINNATI | OH |
| COOKE GREENHOUSE | CLEVELAND | OH |
| COOPER BESSEMER | MOUNT VERNON | OH |
| COOPER ENERGY SERV | MOUNT VERNON | OH |
| COOPER ENERGY SERV | SPRINGFIELD | OH |
| COPPER CORNER | LAKEWOOD | OH |
| COPPER CORNER | CLEVELAND | OH |
| COPPERLY CORPORATION | CLEVELAND | OH |
| Copperweld Steel | Warren | OH |
| Copperweld Steel | Champion | OH |
| Copperweld Steel | Lordstown | OH |
| Copperweld Steel Company | Warren | OH |
| CORCORAN-BROWN LAMP DIVISION OF AUTOLITE – MANUFACTURING PLANT | SHARONVILLE | OH |
| CORHART | BUCKHANNON | OH |
| CORNELL TOWNHOUSES | DAYTON | OH |
| Corning Glass | Greenville | OH |
| CORNING GLASS WORKS | GREENVILLE | OH |
| Corning Glass Works – Greenville Plant | Greenville | OH |
| CORNWELL QUALITY TOOLS | MOGADORE | OH |
| CORNWELL QUALITY TOOLS | MOGADARE | OH |
| CORRECT AIR CORP. | WILLOUGHBY | OH |
| CORRIGAN-MCKENNEY STEEL COMPANY | CLEVELAND | OH |
| CORYVILLE ICE COMPANY | CINCINNATI | OH |
| COSHOCTON DIVISION | COSHOCTON | OH |
| COSHOCTON LIGHT AND HEATING COMPANY – TURBINE PLANT | COSHOCTON | OH |
| COSHOCTON STRAW PAPER COMPANY | COSHOCTON | OH |
| COTTAGE CREAMERY CO | ORRVILLE | OH |
| COTTON MALLEABLE | CANTON | OH |
| COTTON MALLEABLE IRON CO | CANTON | OH |
| COULTON CHEMICAL | OREGON | OH |
| COULTON CHEMICAL CO | OREGON | OH |
| COURIER JOURNAL – CONDENSER LINE | LOUISVILLE | OH |
| COURTHOUSE SQUARE | DAYTON | OH |
| CP WRIGHT & CO AT ST. ANN’S HOSPITAL | CLEVELAND | OH |
| Crane & Breed Casket Company | Cincinnati | OH |
| CRANE COMPANY | ALLIANCE | OH |
| CRANE COMPANY | CANTON | OH |
| Crawford Garage | Akron | OH |
| CRAWFORD POWER | CINCINNATI | OH |
| CRAWFORD STEEL CONSTRUCTION | CINCINNATI | OH |
| CRAWFORD TAYLOR, BRANCH OF US BAKING COMPANY | MANSFIELD | OH |
| CREEDMORE CARTRIDGE COMPANY | BARBERTON | OH |
| CRESCENT BUILDING | CINCINNATI | OH |
| CRESCENT WORKS | CLEVELAND | OH |
| CREST HILLS JUNIOR HIGH SCHOOL – SEYMOURE EAST LAWN | CINCINNATI | OH |
| CRIMINAL JUSTICE BUILDING – SOUTH FRONT STREET | HAMILTON | OH |
| CROMWELL STEEL COMPANY | LORAIN | OH |
| Crosby Restaurant | Cleveland | OH |
| CROSLEY DIVISION, AVCO MANUFACTURING CORPORATION | CINCINNATI | OH |
| CROSLEY RADIO CORPORATION | CINCINNATI | OH |
| CROSS CREEK COAL COMPANY | NEW PHILADELPHIA | OH |
| CROSS POINTE PAPER CORPORATION | DAYTON | OH |
| CROSS POINTE PAPER CORPORATION | WEST CARROLLTON | OH |
| CROUSE CLAY PRODUCTS COMPANY | AKRON | OH |
| CROWELL PUBLISHING COMPANY | SPRINGFIELD | OH |
| CROWN RUBBER CO | FREMONT | OH |
| CROWN RUBBER COMPANY | FREMONT | OH |
| CROWN RUBBER STAMP | CLEVELAND | OH |
| CROWN ZELLERBACH CORPORATION | BALTIMORE | OH |
| Crucible Steel | Cleveland | OH |
| Crucible Steel | Norwalk | OH |
| CRYOGENICS LAB | PERRY TOWNSHIP | OH |
| CRYSTAL ICE AND COLD STORAGE COMPANY | YOUNGSTOWN | OH |
| CRYSTAL SPRINGS ICE COMPANY | CUMMINSVILLE | OH |
| CRYSTAL SPRINGS ICE COMPANY | CINCINNATI | OH |
| CRYSTAL TISSUE CO – POWER PLANT | MIDDLETOWN | OH |
| CRYSTAL TISSUE COMPANY | MIDDLETOWN | OH |
| CSX | Columbus | OH |
| CSX/B&O/B&O SHOPS | NOT PROVIDED | OH |
| CUSTODIAL FARM | ORIENT | OH |
| CUSTOM MACHINE, INC. | CLEVELAND | OH |
| CUYAHOGA COUNTY HOSPITAL | WARRENSVILLE | OH |
| CUYAHOGA COUNTY HOSPITAL | WARRENVILLE | OH |
| CUYAHOGA GREENHOUSE | CLEVELAND | OH |
| CUYAHOGA LIGHT COMPANY – POWER PLANT | CLEVELAND | OH |
| Cuyahoga Lime Company | Cleveland | OH |
| CUYAHOGA SOAP COMPANY | CLEVELAND | OH |
| Cuyahoga Valley Railway | Cleveland | OH |
| CUYAHOGA WORKS | CLEVELAND | OH |
| Cyclops Corp Empire Reev | Mansfield | OH |
| Cyclops Corporation | Mansfiled | OH |
| D & T (DETROIT & TOLEDO) RAILROAD | TOLEDO | OH |
| D. & H. MACHINE | CANTON | OH |
| D. & M. CORD TIRE COMPANY | LEAVITTSBURG | OH |
| D.A.P. | Jackson | OH |
| D.l. All Manufacturing Company | Columbus | OH |
| D.T. WILLIAMS VALVE COMPANY | CINCINNATI | OH |
| D.V.S. NATIONAL MILITARY HOME | MONTGOMERY COUNTY | OH |
| D.Z. NORTON, COORPORATION | POWHATAN | OH |
| DAIRY DELIVERY COMPANY, INCORPORATED | CLEVELAND | OH |
| DAIRY FARMS PRODUCTS COMPANY | ORRVILLE | OH |
| DAIRY PAK | OLMSTEAD FALLS | OH |
| DAIRYMENS MILK COMPANY | CLEVELAND | OH |
| DAIRYPAK-BUTLER, INCORPORATED | OLMSTED FALLS | OH |
| DALE PRODUCTS | FREMONT | OH |
| DANA CORPORATION | TOLEDO | OH |
| DANGLER STOVE AND MANUFACTURING COMPANY | CLEVELAND | OH |
| DANGLER STOVE COMPANY CLEVELAND DIVISION | CLEVELAND | OH |
| DARLING AND COMPANY | READING | OH |
| DARLING AND COMPANY | CLEVELAND | OH |
| Darling Store | Steubenville | OH |
| Darlson Fabrication & Welding Company | Lorain | OH |
| DAVID DAVIES PACKING CO | COLUMBUS | OH |
| DAVIS BAKERY | CLEVELAND | OH |
| Davis Besse Nuclear Power Plant | Oak Harbor | OH |
| Davis Bessie Nuclear Power | Oak Harbor | OH |
| Davis Drywall & Insulation | Cleveland | OH |
| DAVIS SEWING MACHINE COMPANY | DAYTON | OH |
| DAVIS TAILORING CO | CINCINNATI | OH |
| DAVISON CHEMICAL COMPANY | ALLIANCE | OH |
| DAY CROME BRICK & BLOCK | E MORAINE | OH |
| Dayco Plant | Dayton | OH |
| DAYTON AIRPORT – MIDWEST STEEL BUILDING | DAYTON | OH |
| DAYTON AND NORTHERN RAILWAY COMPANY | BROOKVILLE | OH |
| DAYTON AND TROY ELECTRIC RAILWAY – POWER HOUSE | DAYTON | OH |
| DAYTON AND WESTERN RAILROAD COMPANY | WEST ALEXANDRIA | OH |
| DAYTON AND WESTERN TRACTION COMPANY | WEST ALEXANDRIA | OH |
| DAYTON AND XENIA TRACTION COMPANY | DAYTON | OH |
| DAYTON ARCADE COMPANY | DAYTON | OH |
| DAYTON BREWERIES COMPANY | DAYTON | OH |
| Dayton Builders Supply | Dayton | OH |
| DAYTON CITIZENS ELECTRIC COMPANY – POWER PLANT | DAYTON | OH |
| DAYTON CONVENTION CENTER – EAST FIFTH STREET | DAYTON | OH |
| DAYTON ENGINEERING LABORATORIES COMPANY | DAYTON | OH |
| DAYTON FORGE & HEAT TREAT | DAYTON | OH |
| DAYTON FORGING | DAYTON | OH |
| DAYTON ICE MANUFACTURING & COLD STORAGE COMPANY | DAYTON | OH |
| DAYTON LIGHTING COMPANY – POWER PLANT | DAYTON | OH |
| DAYTON MALL – MIAMISBURG CENTERVILLE ROAD | DAYTON | OH |
| Dayton Malleable | Ironton | OH |
| Dayton Malleable / Ironton Iron / Amcast | Ironton | OH |
| DAYTON MALLEABLE IRON | IRONTON | OH |
| Dayton Malleable Iron Company | Ironton | OH |
| DAYTON MALLEABLE IRON COMPANY | DAYTON | OH |
| Dayton Malleable Steel | Ironton | OH |
| Dayton Malleable/Ironton Iron /Amcast | Ironton | OH |
| Dayton Malleable/Sement Solvay | Ironton | OH |
| DAYTON MASONIC TEMPLE | DAYTON | OH |
| DAYTON MENTAL HEALTH CENTER | DAYTON | OH |
| DAYTON METAL PRODUCTS COMPANY | DAYTON | OH |
| DAYTON POWER & LIGHT | DAYTON | OH |
| DAYTON POWER & LIGHT – DUKE ENERGY – KILLEN STATION | WRIGHTSVILLE | OH |
| DAYTON POWER & LIGHT – J M STUART UNITS #1 & #2 | ABERDEEN | OH |
| Dayton Power & Light – Longworth Station (305 South Perry Street) | Dayton | OH |
| Dayton Power & Light – Stuart Generating Station | MANCHESTER | OH |
| DAYTON POWER & LIGHT – STUART GENERATING STATION | ABERDEEN | OH |
| Dayton Power & Light – Stuart Generating Station – National Valve | MANCHESTER | OH |
| Dayton Power & Light – Stuart Generating Station – Service Building | ABERDEEN | OH |
| DAYTON POWER & LIGHT – STUART GENERATING STATION – UNIT 4 | ABERDEEN | OH |
| Dayton Power & Light Co | Aberdeen | OH |
| DAYTON POWER & LIGHT CO – 3rd Street Station (617 E. 3rd Street) | DAYTON | OH |
| DAYTON POWER & LIGHT CO – Frank M. Tait Station | SOUTH DAYTON | OH |
| DAYTON POWER & LIGHT CO – O.H. Hutchings Station | MIAMISBURG | OH |
| Dayton Power & Light Company | Troy | OH |
| Dayton Power & Light Company | Miamisburg | OH |
| Dayton Power & Light Company | South Dayton | OH |
| Dayton Power & Light Company | Dayton | OH |
| DAYTON POWER & LIGHT COMPANY – KILLEN GENERATING STATION | MANCHESTER | OH |
| DAYTON POWER & LIGHT COMPANY – LONGWORTH STREET STEAM STATION | DAYTON | OH |
| DAYTON POWER & LIGHT COMPANY – THIRD STREET STATION | DAYTON | OH |
| Dayton Power And Light | Aberdeen | OH |
| DAYTON POWER AND LIGHT – J.M. STUART GENERATING STATION | ABERDEEN | OH |
| DAYTON POWER AND LIGHT – STUART STATION | ABERDEEN | OH |
| DAYTON POWER AND LIGHT COMPANY – O.H. HUTCHINGS STATION | DAYTON | OH |
| Dayton Press | Akron | OH |
| Dayton Press | Dayton | OH |
| DAYTON PRESS, INC | DAYTON | OH |
| DAYTON RUBBER MANUFACTURING COMPANY | MARIETTA | OH |
| DAYTON RUBBER MANUFACTURING COMPANY | WAYNESVILLE | OH |
| DAYTON RUBBER MANUFACTURING COMPANY | DAYTON | OH |
| DAYTON SIGNAL DEPOT | DAYTON | OH |
| DAYTON STATE HOSPITAL | DAYTON | OH |
| DAYTON TIRE AND RUBBER COMPANY | DAYTON | OH |
| DAYTON UNION RAILWAY COMPANY | DAYTON | OH |
| Dayton Walther Corporation | Dayton | OH |
| DAYTON WRIGHT AIRPLANE COMPANY | DAYTON | OH |
| DAYTON, SPRINGFIELD AND URBANA ELECTRIC RAILWAY – MEDWAY PLANT | MEDWAY | OH |
| Dcas | Cleveland | OH |
| DDRESSOGRAPH MULTIGRAPH CORP. | CLEVELAND | OH |
| DEACONESS HOSPITAL | CINCINNATI | OH |
| DEAN ELECTRIC COMPANY – ELYRIA MANUFACTURING PLANT | ELYRIA | OH |
| DEARING & CO | YOUNGSTOWN | OH |
| DEARING & COMPANY | YOUNGSTOWN | OH |
| DECATUR IND., INCORPORATED | CELINA | OH |
| Defence Const. Supply Center | Columbus | OH |
| Defence Construction | Columbus | OH |
| Defense Construction Supply Center | Columbus | OH |
| Defense Contract Adm Service Region | Cleveland | OH |
| DEFENSE PLANT CORPORATION | CANTON | OH |
| DEFENSE PLANT CORPORATION | ALLIANCE | OH |
| DEFENSE PLANT CORPORATION, PLANT C | AKRON | OH |
| DEFENSE SUPPLY AGENCY | COLUMBUS | OH |
| DEFIANCE BOX COMPANY | DEFIANCE | OH |
| DEFIANCE LIGHT AND POWER COMPANY – POWER PLANT | DEFIANCE | OH |
| DEFIANCE MILK PRODUCTS COMPANY | DEFIANCE | OH |
| DEFOREST SHEET AND TIN PLATE COMPANY | NILES | OH |
| DELAWARE AND MAGNETIC SPRINGS RAILWAY COMPANY | DELAWARE | OH |
| DELCO LIGHT COMPANY | MORRAINE | OH |
| DELCO MANUFACTURING | DAYTON | OH |
| Delco Moraine | Dayton | OH |
| DELCO MORAINE DIVISION OF GENERAL MOTORS CORPORATION | DAYTON | OH |
| DELCO PRODUCTS DIVISION OF GENERAL MOTORS CORPORATION | DAYTON | OH |
| DELCO PRODUCTS DIVISION OF GENERAL MOTORS CORPORATION | BEAVERTOWN | OH |
| Delco Products Divison of GMC | Dayton | OH |
| DELCO, DIVISION OF GENERAL MOTORS CORPORATION | KETTERING | OH |
| DELPHI | WARREN | OH |
| DELPHI AUTO SYSTEMS CORPORATION | VANDALIA | OH |
| DELPHI AUTO SYSTEMS CORPORATION | DAYTON | OH |
| DELPHI AUTOMOTIVE SYSTEM | DAYTON | OH |
| DELPHI AUTOMOTIVE SYSTEM | SANDUSKY | OH |
| DELPHI AUTOMOTIVE SYSTEM | VANDALIA | OH |
| DELPHI AUTOMOTIVE SYSTEM | WARREN | OH |
| DELPHI CHASSIS SYSTEMS | DAYTON | OH |
| DELPHI CHASSIS SYSTEMS | KETTERING | OH |
| DELPHI CHASSIS SYSTEMS | SANDUSKY | OH |
| DELPHI CORPORATION | COLUMBUS | OH |
| DELPHI HARDWARE PLANT | COLUMBUS | OH |
| DELPHI INTERIOR & LIGHTING SYSTEMS – COLUMBUS OPERATIONS – MANUFACTURING PLANT | COLUMBUS | OH |
| DELPHOS ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | DELPHOS | OH |
| DELUXE CHECK PRINTERS | CLEVELAND | OH |
| DEMING COMPANY | SALEM | OH |
| DENISON UNIVERSITY PLANT | GRANVILLE | OH |
| DENNISON UNIVERSITY | GRANVILLE | OH |
| Department of Energy – Feed Materials Production Center | Fernald | OH |
| Department of Energy- Gas Centrifuge Enrichment Plant | Piketon | OH |
| Department of Highways | Middletown | OH |
| DEPARTMENT OF PUBLIC HEALTH AND WELFARE, DIVISION OF CITY HOSPITAL | CLEVELAND | OH |
| DEPARTMENT OF PUBLIC WELFARE | CLEVELAND | OH |
| DEPARTMENT OF PUBLIC WELFARE | MANSFIELD | OH |
| Detrex Chemical | Ashtabula | OH |
| DETROIT & TOLEDO SHORE LINE RAILROAD CO. | LANGE | OH |
| Detroit & Toledo Shoreline | Lang | OH |
| Detroit Steel | New Boston | OH |
| DETROIT STEEL | PORTSMOUTH | OH |
| Detroit Steel | Mansfield | OH |
| DETROIT STEEL CORPORATION | NEW BOSTON | OH |
| DETROIT STEEL CORPORATION | PORTSMOUTH | OH |
| DETROIT STEEL CORPORATION, PORTSMOUTH DIVISION | PORTSMOUTH | OH |
| Detroit Steel Mill | Portsmouth | OH |
| DETROIT STEEL MILL | NEW BOSTON | OH |
| DEVILBISS HIGH SCHOOL | TOLEDO | OH |
| DEWSTOE BRAINARD COMPANY | CLEVELAND | OH |
| DIA SHAMROCK | CHARDON | OH |
| DIAMOND ALKALI | ASHTABULA | OH |
| DIAMOND ALKALI | PAINESVILLE | OH |
| DIAMOND ALKALI | CLEVELAND | OH |
| Diamond Alkali Co | Painesville | OH |
| DIAMOND ALKALI CO | PAINSVILLE | OH |
| DIAMOND ALKALI CO. | PAINESVILLE | OH |
| DIAMOND ALKALI COMPANY | PAINESVILLE | OH |
| DIAMOND ALKALI COMPANY | FAIRPORT | OH |
| DIAMOND ALKALI COMPANY | ALKALI | OH |
| DIAMOND ALKALI COMPANY | CLEVELAND | OH |
| DIAMOND ALKALI COMPANY | FAIRPORT HARBOR | OH |
| DIAMOND ALKALI COMPANY (DIAMOND SHAMROCK) | PAINESVILLE | OH |
| Diamond Alkali Company a/k/a Diamond Shamrock | Alkali | OH |
| Diamond Alkali Company a/k/a Diamond Shamrock | Cleveland | OH |
| Diamond Alkali Company a/k/a Diamond Shamrock | Painesville | OH |
| DIAMOND ALKALI RESEARCH CENTER | PAINESVILLE | OH |
| DIAMOND BRICK COMPANY | BARBERTON | OH |
| Diamond Crystal Colonial Salt Divison | Akron | OH |
| DIAMOND CRYSTAL SALT | CANTON | OH |
| DIAMOND CRYSTAL SALT COMPANY | AKRON | OH |
| DIAMOND FABRICATOR | CLEVELAND | OH |
| DIAMOND FERTILIZER CO. | SANDUSKY | OH |
| DIAMOND MAGNESIUM PLANT | PAINESVILLE | OH |
| DIAMOND MATCH COMPANY | BARBERTON | OH |
| DIAMOND PORTLAND CEMENT | MIDDLE BRANCH | OH |
| DIAMOND PORTLAND CEMENT COMPANY | MIDDLEBRANCH | OH |
| DIAMOND POWER | LANCASTER | OH |
| Diamond Power Specialty Company | Lancaster | OH |
| DIAMOND POWER SPECIALTY COMPANY – LANCASTER HEADQUARTERS | LANCASTER | OH |
| DIAMOND PURCHASING COMPANY | LANCASTER | OH |
| DIAMOND RUBBER COMPANY | AKRON | OH |
| DIAMOND RUBBER COMPANY | SOUTH AKRON | OH |
| DIAMOND RUBBER COMPANY, FALON ST. PLANT | AKRON | OH |
| Diamond Shamrock | Painesville | OH |
| Diamond Shamrock | Cleveland | OH |
| DIAMOND SHAMROCK | CHARDON | OH |
| DIAMOND SHAMROCK CHEMICAL | CLEVELAND | OH |
| DIAMOND SHAMROCK CHEMICAL | FAIRPORT HARBOR | OH |
| DIAMOND SHAMROCK CHEMICAL CO | CINCINNATI | OH |
| DIAMOND SHAMROCK COMPANY | PAINESVILLE | OH |
| DIAMOND SHAMROCK COMPANY | FAIRPORT | OH |
| DIAMOND SHAMROCK CORP | PAINESVILLE | OH |
| DIAMOND SHAMROCK CORP – CHEMICAL PLANT | PAINESVILLE | OH |
| DIAMOND SHAMROCK CORP. | PAINESVILLE | OH |
| DIAMOND SHAMROCK CORP. | FAIRPORT HARBOR | OH |
| DIAMOND SHAMROCK CORP. | ASHTABULA | OH |
| Diamond Shamrock Corp. (originally known as Diamond Alkali) | Cleveland | OH |
| DIAMOND SHAMROCK CORPORATION | PAINESVILLE | OH |
| Die Cut Products | Cleveland | OH |
| Diebold Inc. | Canton | OH |
| Diebold Inc. | Hamilton | OH |
| DIEBOLD SAFE AND LOCK COMPANY | CANTON | OH |
| DIEBOLT BREWING COMPANY | CLEVELAND | OH |
| DILLES BOTTOM POWER PLANT | Dillies Bottom | OH |
| DILLIES BOTTOM | SHADYSIDE | OH |
| DIVISION AVE. PUMPING STATION | CLEVELAND | OH |
| DIVISION US STEEL CORPORATION | FAIRBORN | OH |
| DIXIE TERMINAL | CINCINNATI | OH |
| DIXIE TERMINAL – 3RD FLOOR | CINCINNATI | OH |
| DIXIE TERMINAL – 4TH FLOOR | CINCINNATI | OH |
| DIXIE TERMINAL BUILDING | CINCINNATI | OH |
| DOBECKMUN COMPANY | CLEVELAND | OH |
| DOEHLER – JARVIS | TOLEDO | OH |
| Doehler Jarvis Castings ? 1945 Smead Avenue | Toledo | OH |
| Doehler Jarvis Division | Toledo | OH |
| DOEHLER-JARVIS CASTINGS DIVISION | TOLEDO | OH |
| DOEHLER-JARVIS PLANT 2 | TOLEDO | OH |
| DOMESTIC ENGINEERING BUILDING COMPANY | DAYTON | OH |
| Don Overhault Company | Lipstick | OH |
| DONN PRODUCTS | WESTLAKE | OH |
| DORNBACK FURNACE AND FOUNDRY – LAKELAND BOULEVARD | EASTLAKE | OH |
| DOTY MANUFACTURING COMPANY | DAYTON | OH |
| Doug Boldman residence, 619 N. Russell | Urbana | OH |
| DOVER FORGE AND IRON COMPANY | CANAL DOVER | OH |
| DOVER FORGE AND IRON COMPANY CANAL | DOVER | OH |
| DOVER LIBRARY | CANTON | OH |
| DOVER LIGHT & POWER PLANT | DOVER | OH |
| DOVER MANUFACTURING COMPANY | DOVER | OH |
| DOVER MUNICIPAL LIGHT PLANT | DOVER | OH |
| DOVER WORKS | DOVER | OH |
| Dow Chemical | Haverhill | OH |
| Dow Chemical | Beverly | OH |
| DOW CHEMICAL – HANGING ROCK PLANT | IRONTON | OH |
| DOW CHEMICAL CO | CLEVELAND | OH |
| DOW CHEMICAL CO | HANGING ROCK | OH |
| Dr. Hansen Clinic Building | Cleveland | OH |
| DRACKETT COMPANY | CINCINNATI | OH |
| DRACKETT COMPANY | READING | OH |
| DRACKETT COMPANY | SHARONVILLE | OH |
| Dravo | Marietta | OH |
| Dravo Corp. | Marietta | OH |
| DRAVO CORPORATION | MARIETTA | OH |
| DRAVO PLANT | MARIETTA | OH |
| DRESDEN PAPER MILLS COMPANY | DRESDEN | OH |
| DRESSER – IDECO COMPANY | COLUMBUS | OH |
| DROP FORGE AND DIE | CLEVELAND | OH |
| DUES WAREHOUSE – BUILDING 204 – ELECTRIC ROOM – HIGHWAY 747 | BUTLER COUNTY | OH |
| DUES WAREHOUSE – BUILDING 204 – ELECTRIC ROOM – HIGHWAY 747 | Cincinnati | OH |
| DUNBAR – SULLIVAN | CLEVELAND | OH |
| DUNLAP HOSPITAL | CANTON | OH |
| Dupont | Circleville | OH |
| DUPONT | VEE | OH |
| DUPONT | CLEVELAND | OH |
| DUPONT – CHEMICAL – BARRY ROAD | HAVERHILL | OH |
| DUPONT CHEMICAL | ASHTABULA | OH |
| DUPONT CHEMICAL | CIRCLEVILLE | OH |
| DUPONT CHEMICAL – TANKS – BROWER ROAD | NORTH BEND | OH |
| DUPONT CIRCLEVILLE PLANT | CIRCLEVILLE | OH |
| DUPONT HURON PLANT | HURON | OH |
| DUPONT TOLEDO PLANT | TOLEDO | OH |
| DUREZ PLASTIC AND CHEMICALS, INCORPORATED | KENTON | OH |
| DURION CO, INC | DAYTON | OH |
| DURIRON COMPANY | DAYTON | OH |
| DURST MILLING COMPANY | DAYTON | OH |
| DUST CONTROL | CLEVELAND | OH |
| DWG Cigar Factory | Lima | OH |
| DYE COMPANY | CLEVELAND | OH |
| DYER COMPANY | CLEVELAND | OH |
| DYSON JOSEPH & SONS, INCORPORATED | CLEVELAND | OH |
| DYSON JOSEPH AND SONS INC F | CLEVELAND | OH |
| E I Dupont De Nemours & Co | Circleville | OH |
| E I Dupont De Nemours & Co | Toledo | OH |
| E I DUPONT DE NEMOURS | CIRCLEVILLE | OH |
| E I DUPONT DE NEMOURS – 1930 TREMAINSVILLE ROAD | TOLEDO | OH |
| E I DUPONT DE NEMOURS – MATZINGER ROAD PLANT | TOLEDO | OH |
| E I DUPONT DENEMOURS | HURON | OH |
| E M POSTON | ATHENS | OHIO |
| E. I. DUPONT DE NEMOURS & CO. | TOLEDO | OH |
| E. I. DUPONT DE NEMOURS & CO. | CIRCLEVILLE | OH |
| E. I. DUPONT DE NEMOURS & CO. | HURON | OH |
| E. I. DUPONT DE NEMOURS & CO. | CLEVELAND | OH |
| E. KAHN’S SONS COMPANY | CINCINNATI | OH |
| E. KITZEL & SONS | CLEVELAND | OH |
| E.C. ZUKOWSKI | MENTOR | OH |
| E.F. DONLEYS SONS, INCORPORATED, 10203 MILES AVE. | CLEVELAND | OH |
| E.G. GRACE | LORAIN | OH |
| E.G. SMITH CONSTRUCTION PRODUCTS – CAMBRIDGE PLANT | CAMBRIDGE | OH |
| E.H. DYER AND COMPANY | CLEVELAND | OH |
| E.I. DU PONT DE NEMOURS & COMPANY | CLEVELAND | OH |
| E.I. Du Pont De Nemours | Vee | OH |
| E.I. du Pont de Nemours & Company | Newark | OH |
| E.I. du Pont de Nemours & Company | Marietta | OH |
| E.I. du Pont de Nemours & Company | Circleville | OH |
| E.I. du Pont de Nemours & Company | Granville | OH |
| E.I. du Pont de Nemours & Company | Haverhill | OH |
| E.I. Dupont de Nemours & Company | Toledo | OH |
| E.I. Dupont de Nemours & Company | Circleville | OH |
| E.I. DUPONT DE NEMOURS & COMPANY | VEE | OH |
| E.I. DUPONT DE NEMOURS & COMPANY | CLEVELAND | OH |
| E.I. DUPONT DE NEMOURS AND COMPANY | CIRCLEVILLE | OH |
| E.I. DUPONT DE NEMOURS AND COMPANY, 1930 TREMAINSVILLE RD. | TOLEDO | OH |
| E.I. DUPONT DE NEMOURS AND COMPANY, MATZINGER RD. PLANT | TOLEDO | OH |
| E.M.D. COMPONENTS | WICKLIFFE | OH |
| E.S. KELLY | SPRINGFIELD | OH |
| EAGLE BOX BOARD AND PAPER COMPANY | MAUMEE | OH |
| EAGLE CERAMICS | CLEVELAND | OH |
| EAGLE CERAMICS | MEDINA | OH |
| EAGLE COOPENAGE COMPANY | HAMILTON | OH |
| Eagle Home & Building | Lima | OH |
| EAGLE IRON AND STEEL COMPANY | IRONTON | OH |
| EAGLE PAPER COMPANY | FRANKLIN | OH |
| EAGLE WOODENWARE MANUFACTURING COMPANY | HAMILTON | OH |
| EAGLE-PICHER CORPORATION | CINCINNATI | OH |
| EARL E. BRIGHT, INC. | COLUMBUS | OH |
| EARTHMOVING DIV. | HUDSON | OH |
| EASCO | YOUNGSTOWN | OH |
| EASCO | CLEVELAND | OH |
| EASCO ALUMINUM | NILES | OH |
| EASCO ALUMINUM | GIRARD | OH |
| EAST EVANSTON ELEMENTARY SCHOOL – FAIRFAX & WORLD AVENUES | CINCINNATI | OH |
| EAST FAIRFIELD CHURCH | CANTON | OH |
| EAST FINISHING BAY AND MAINTENANCE – HEADQUARTERS BLDG | LORAIN | OH |
| EAST HEMPFIELD ELEMENTARY SCHOOL | GREENSBURG | OH |
| East Liverpool High School | East Liverpool | OH |
| EAST LIVERPOOL TRACTION AND LIGHT COMPANY – ELECTRIC LIGHTING PLANT | EAST LIVERPOOL | OH |
| EAST LIVERPOOL TRACTION AND LIGHT COMPANY – POWER PLANT | EAST LIVERPOOL | OH |
| EAST OHIO GAS COMPANY – #2 WORKS | CLEVELAND | OH |
| EAST OHIO GAS COMPANY – COLUMBIANA COMPRESSOR STATION | BELOIT | OH |
| EAST OHIO GAS PLANT | DOYLESTOWN | OH |
| EAST OHIO GAS PLANT | CANTON | OH |
| EAST PALESTINE RUBBER COMPANY | EAST PALESTINE | OH |
| EAST SIDE HIGH SCHOOL | CINCINNATI | OH |
| EAST WORKS | MIDDLETOWN | OH |
| Eastern Avenue Lumber Co | Chillicothe | OH |
| EASTERN IOWA LIGHT | MONPELIER | OH |
| EASTERN STATES FARMERS | HURON | OH |
| EASTLAKE | EASTLAKE | OH |
| EASTLAKE HIGH SCHOOL | WILLOUGHBY | OH |
| EASTLAND MALL – LAZARUS DEPARTMENT STORE | COLUMBUS | OH |
| EASTMAN KODAK COMPANY | FINDLAY | OH |
| EASTMAN KODAK COMPANY | CINCINNATI | OH |
| Eastview Elementary School | Mansfield | OH |
| EASTWOOD ELEMENTARY SCHOOL | WARRENSVILLE HEIGHTS | OH |
| EATON CORP. | CLEVELAND | OH |
| EATON-YALE | CLEVELAND | OH |
| EBERHARD MANUFACTURING COMPANY | CLEVELAND | OH |
| EBERHARD MANUFACTURING COMPANY, DIVISION EASTERN MALLEABLE IRON COMPANY | CLEVELAND | OH |
| ECKERT PACKING COMPANY | TROY | OH |
| ED HART CO. | CANTON | OH |
| EDGECLIFF HI-RISE | CINCINNATI | OH |
| EDGEWATER PLANT | CLEVELAND | OH |
| EDGEWATER STATION | LORAIN | OH |
| EDISON ELECTRIC ILLUMINATING COMPANY – MIDDLETOWN PLANT | MIDDLETOWN | OH |
| Edmund W. Hall | Cincinnati | OH |
| EDW. HART | CANTON | OH |
| EDWARD FORD PLATE GLASS COMPANY | TOLEDO | OH |
| EDWARD FORD PLATE GLASS COMPANY | ROSSFORD | OH |
| Edward Ford Plate Glass Company – Rossford Plant Boiler Room | Rossford | OH |
| Edward R. Hart | Canton | OH |
| EDWARD R. HART CO. | CANTON | OH |
| EDWARD R. HART COMPANY | CANTON | OH |
| EDWARDS BUILDING COMPANY | CINCINNATI | OH |
| EFLAROSE SUGAR COMPANY | CARTHAGE | OH |
| EGAN COMPANY | CINCINNATI | OH |
| EL MATADOR BAR | CINCINNATI | OH |
| ELDON CRONQUIST INC | ASHTABULA | OH |
| ELDON CRONQUIST, INC. | ASHTABULA | OH |
| ELECTRIC AUTO LITE CO. – SPARK PLUG DIV. NO. 4 | FOSTORIA | OH |
| ELECTRIC AUTOLITE – CHAMPLAIN STREET FACTORY | TOLEDO | OH |
| Electric Autolite – Spark Plug Plant | Fostoria | OH |
| Electric Autolite – Spark Plug Plant – Division 4 | FOSTORIA | OH |
| ELECTRIC AUTOLITE COMPANY | EVENDALE | OH |
| ELECTRIC AUTOLITE COMPANY | CINCINNATI | OH |
| ELECTRIC AUTOLITE COMPANY | TOLEDO | OH |
| ELECTRIC AUTOLITE COMPANY, CORCORAN BROWNLAMP DIVISION | CINCINNATI | OH |
| ELECTRIC AUTOLITE COMPANY, SUBSIDIARY OF THE WILLYS OVERLAND COMPANY | TOLEDO | OH |
| Electric Furnace | Salem | OH |
| ELECTRIC FURNACE* | SALEM | OH |
| ELECTRIC MELTING SERVICE | LOUISVILLE | OH |
| Electric Metallurgical Company | Ashtabula | OH |
| ELECTRIC PROD. | CLEVELAND | OH |
| ELECTRIC RUBBER RECLAIMING COMPANY – MANUFACTURING PLANT | BARBERTON | OH |
| ELECTRIC STORAGE BATTERY CO – AUTOMOTIVE DIVISION | CLEVELAND | OH |
| ELECTRIC STORAGE BATTERY COMPANY | CLEVELAND | OH |
| ELECTRIC WELD | CLEVELAND | OH |
| ELECTRO METALLURGICAL CO. | MARIETTA | OH |
| ELECTRO METALLURGICAL CO. – UNION CARBIDE & CARBON CORP, DIV OF | MARIETTA | OH |
| Electro Metallurgical Company | Ceico | OH |
| ELECTRO METALLURGICAL COMPANY | ASHTABULA | OH |
| ELECTRO METALLURGICAL DIVISION, UNION CARBIDE AND CARBON CORPORATION | MARIETTA | OH |
| ELECTRO METALLURGICAL DIVISION, UNION CARBIDE AND CARBON CORPORATION | ASHTABULA | OH |
| ELECTRO, ALLOYS DIVISION | ELYRIA | OH |
| ELECTROLITE CORPORATION | DEFIANCE | OH |
| Electrometallurgical Division/Union Carbide | Marietta | OH |
| ELFOROSE SUGAR COMPANY | CARTHAGE | OH |
| ELIZABETH GAMBLE DEACONESS HOME ASSOCIATION | CINCINNATI | OH |
| ELJER DIVISION OF MURRAY COMPANY | SALEM | OH |
| ELJER PLUMBING | SALEM | OH |
| Elkem Metals | Marietta | OH |
| Elledge Gasketing & Supply | Columbus | OH |
| ELLIOTT COMPANY | SPRINGFIELD | OH |
| Ellis & Watts Company | Cincinnati | OH |
| ELLSWORTH COAL COMPANY | CLEVELAND | OH |
| ELMHURST SCHOOL C-959 – CHAMPION C-1037 – GOOD SHEPHERD C-991 – NATIONAL LIME C-1118 | TOLEDO | OH |
| ELWOOD MYERS COMPANY | SPRINGFIELD | OH |
| ELY IND. | HAYESVILLE | OH |
| ELYRIA CANNING COMPANY | ELYRIA | OH |
| Elyria Foundry | Elyria | OH |
| ELYRIA FOUNDRY CO | ELYRIA | OH |
| ELYRIA GAS AND ELECTRIC LIGHT COMPANY – ELYRIA FACTORY | ELYRIA | OH |
| ELYRIA IRON AND STEEL COMPANY | ELYRIA | OH |
| ELYRIA IRON AND STEEL COMPANY | CLEVELAND | OH |
| ELYRIA MACHINE COMPANY | MANSFIELD | OH |
| ELYRIA MEDICAL CENTER | ELYRIA | OH |
| Elyria Memorial Hospital | Elyria | OH |
| Emanuel Baptist Church | Arcanum | OH |
| EMD | ASHLAND | OH |
| EMD COMPONENTS | ASHLAND | OH |
| EMERALD MATERIALS | CINCINNATI | OH |
| EMERSON SCHOOL | DAYTON | OH |
| EMERY BLEACH FACILITIES – 4300 CUREW TOWER | CINCINNATI | OH |
| Emery Industries | Cincinnati | OH |
| EMERY INDUSTRIES – 4900 ESTE AVENUE | CINCINNATI | OH |
| EMERY INDUSTRIES, INCORPORATED | CINCINNATI | OH |
| EMERY INDUSTRIES, INCORPORATED | IVORYDALE | OH |
| EMERY INDUSTRIES, INCORPORATED | ST. BERNARD | OH |
| EMERY PARKING DECK, 16TH AND RACE ST. | CINCINNATI | OH |
| Empire Detroit Steel | Mansfield | OH |
| Empire Detroit Steel | New Boston | OH |
| EMPIRE DETROIT STEEL | PORTSMOUTH | OH |
| Empire Detroit Steel aka Detroit Steel | New Boston | OH |
| EMPIRE DETROIT STEEL CO. | MANSFIELD | OH |
| Empire Detroit Steel Division | Mansfield | OH |
| Empire Detroit Steel Division, Cyclops Corporation | Mansfield | OH |
| Empire Detroit Steel Division, Cyclops Corporation | Portsmouth | OH |
| EMPIRE IRON AND STEEL COMPANY | NILES | OH |
| EMPIRE PLASTICS, INCORPORATED | NEWCOMERSTOWN | OH |
| EMPIRE PLASTICS, INCORPORATED / GENCORP, FAIRLAWN | NEWCOMERSTOWN | OH |
| EMPIRE PLOW COMPANY | GLENLAND | OH |
| EMPIRE REEVES NEW BUILDING | MANSFIELD | OH |
| EMPIRE REEVES STEEL CORPORATION | MANSFIELD | OH |
| EMPIRE SPRING | ELYRIA | OH |
| EMPIRE STEEL CORPORATION | MANSFIELD | OH |
| Empire/Detroit/ Portsmouth Steel | New Boston | OH |
| EMPIRE-DETROIT | MANSFIELD | OH |
| Empo Electric Motors | Piqua | OH |
| EMTEC | ELYRIA | OH |
| ENAMEL PRODUCTS COMPANY | CLEVELAND | OH |
| ENAMEL PRODUCTS COMPANY | COLLINWOOD | OH |
| ENAMELAC CO. | SOUTH EUCLID | OH |
| ENDECON CORPORATION | CLEVELAND | OH |
| ENDRESS FLORIST | NEW PHILADELPHIA | OH |
| Enemple Co | Evandale | OH |
| ENERCON SYSTEMS | CLAIRTON | OH |
| ENERCON SYSTEMS, INC. | ELYRIA | OH |
| Engineering Tool & Die | Cleveland | OH |
| ENGLE AIR CRAFT COMPANY | NILES | OH |
| ENGLISH WOODS | CINCINNATI | OH |
| Envirotech Systems Inc | Middletown | OH |
| ERB NASA – SE #7 | CLEVELAND | OH |
| Erection Shop, Yard B | Columbus | OH |
| ERIE CABLE | MEDINA | OH |
| ERIE COPPER WORKS | MEDINA | OH |
| ERIE DYEING COMPANY | CLEVELAND | OH |
| ERIE ORDNANCE DEPOT | LA CARNE | OH |
| ERIE PROVING GROUNDS | LACARNE | OH |
| Erie Railroad | Youngstown | OH |
| Erie Railroad Co. | Brier Hill | OH |
| Erie Railroad Co. | CLEVELAND | OH |
| Erie Railroad Co. | Marion | OH |
| ERIE RAILROAD COMPANY | CLEVELAND | OH |
| ERIE RAILROAD COMPANY | MARION | OH |
| ERIE TIRE AND RUBBER COMPANY | SANDUSKY | OH |
| ERIE VIEW PLAZA | CLEVELAND | OH |
| ERIEVIEW CORP | CLEVELAND | OH |
| ERIEVIEW INSULATION | CLEVELAND | OH |
| ERIEVIEW PLAZA | CLEVELAND | OH |
| ERVING PAPER COMPANY | LOCKLAND | OH |
| ERWINE SCHOOL | CANTON | OH |
| ESCAST | WATERVILLE | OH |
| ESSEX GROUP CONTROL | LEXINGTON | OH |
| ESSEX GROUP, INC. | LANCASTER | OH |
| ESSEX HOUSE, 7610 READING RD. | CINCINNATI | OH |
| ESSEX INTERNATIONAL | LEXINGTON | OH |
| ESSEX INTERNATIONAL | MANSFIELD | OH |
| ESSEX WIRE | MANSFIELD | OH |
| ESSEX WIRE | LEXINGTON | OH |
| ESSEX WIRE CORP – R. B. M. DIVISION | LANCASTER | OH |
| ESTATE OF HAROLD C. SCHOT | CINCINNATI | OH |
| ESTATE OF HAROLD C. SCHOTT | EVENDALE | OH |
| ESTATE OF JOSEPH T. CAREW | CINCINNATI | OH |
| ESTATE OF L.B. HARRISON, TEXTILE BUILDING | CINCINNATI | OH |
| ETHEL FROST SCHOOL | MOUNT HEALTHY | OH |
| EUCLID & 55 TEAM TRACK | CLEVELAND | OH |
| EUCLID DIV. | CLEVELAND | OH |
| EUCLID DIVISION | HUDSON | OH |
| EUCLID GENERAL HOSPITAL | EUCLID | OH |
| EUCLID GLENVILLE HOSPITAL | EUCLID | OH |
| EUCLID SPRING CO. | WICKLIFFE | OH |
| EUGENE COOK GREEHOUSE | CLEVELAND | OH |
| EVANGELICAL DEACONESS HOSPITAL – 4229 PEARL ROAD | CLEVELAND | OH |
| EVANGELICAL DEACONESS HOSPITAL, 4229 PEARL RD. | CLEVELAND | OH |
| EVANS SAVINGS & LOAN | CANTON | OH |
| Everbest Drywall | Dayton | OH |
| EX-CELL-O CORP | CLEVELAND | OH |
| EXCELSIOR LAUNDRY COMPANY | DAYTON | OH |
| EXCELSIOR LAUNDRY COMPANY | CINCINNATI | OH |
| EXCELSIOR SHOE COMPANY | PORTSMOUTH | OH |
| Exomet | Conneaut | OH |
| Exomet Inc | Conneaut | OH |
| Exomet Inc. | Conneut | OH |
| F E I Inc | Cleveland | OH |
| F M TAIT | DAYTON | OHIO |
| F. & R. LAZARUS AND COMPANY | COLUMBUS | OH |
| F. C. WHITNER PLUMBING & HEATING | WAUSEON | OH |
| F. E. MYERS & BRO. COMPANY | ASHLAND | OH |
| F. GRAY COMPANY | PIQUA | OH |
| F. SCHUMACHER | AKRON | OH |
| F. ZIMMERMAN COMPANY | CLEVELAND | OH |
| F.A. PILGRIM ERTUSION | YOUNGSTOWN | OH |
| F.B. MORGAN POWER COMPANY – POWER PLANT | CINCINNATI | OH |
| F.B. ZIEG MANUFACTURING COMPANY, WASHING MACHINES | FREDERICKSTOWN | OH |
| F.E. MEYERS CO. | ASHLAND | OH |
| F.E. MYERS AND BROTHER | ASHLAND | OH |
| F.E. MYERS AND COMPANY | PLACE ASHLAND | OH |
| F.E. SEITZ | DELHI TOWNSHIP | OH |
| F.E. SHCUMACHER COMPANY | HARTVILLE | OH |
| F.E.I. INC. | CLEVELAND | OH |
| F.L. EMMERT COMPANY | CINCINNATI | OH |
| F.W. MEANS AND COMPANY | COLUMBUS | OH |
| F.W. PAULIN | CLEVELAND | OH |
| F1 & F2 FURNACES | NEWARK | OH |
| FABRICATED METAL SPEC. | BEDFORD | OH |
| FABRICATING DIVISION OF ARMCO STEEL COMPANY | MIDDLETOWN | OH |
| FACTORY POWER COMPANY – POWER HOUSE | CINCINNATI | OH |
| FACTORY POWER COMPANY – POWER PLANT | CINCINNATI | OH |
| FAIRFAX FORD – REDBANK ROAD | FAIRFAX | OH |
| FAIRFIELD AIR DEPOT, PATTERSON FIELD | FAIRFIELD | OH |
| FAIRFIELD ENGINEERING | MARION | OH |
| FAIRFIELD ENGINEERING CO | MARION | OH |
| FAIRFIELD ENGINEERING COMPANY | MARION | OH |
| FAIRFIELD PAPER COMPANY | BALTIMORE | OH |
| FAIRFIELD SCHOOL FOR BOYS | LANCASTER | OH |
| FAIRFIELD SOUTH ELEMENTARY SCHOOL – BILBURY ROAD | FAIRFIELD | OH |
| FAIRMONT PRESBYTERIAN CHURCH – FAR HILLS AVENUE | KETTERING | OH |
| FAIRMOUNT ST. PUMPING STATION | CLEVELAND | OH |
| FAIRVIEW HIGH SCHOOL | FAIRVIEW | OH |
| FAIRVIEW HIGH SCHOOL | FAIRVIEW PARK | OH |
| FAIRVIEW HOSPITAL | CLEVELAND | OH |
| FAIRVIEW PARK HOSPITAL | FAIRVIEW PARK | OH |
| FAIRVIEW PARK HOSPITAL | CLEVELAND | OH |
| FAIRVIEW PARK HOSPITAL – GEORGE H. SCOTT RESEARCH LAB. BLDG | CLEVELAND | OH |
| FAIRVIEW PARK HOSPITAL – NURSES HOME | CLEVELAND | OH |
| FAIRVIEW PARK HOSPITAL NURSES HOME | CLEVELAND | OH |
| FALCON IRON AND NAIL COMPANY | NILES | OH |
| FALCON MILLS | NILES | OH |
| FALCON NAIL AND IRON COMPANY, MILL F | NILES | OH |
| FALCON TIN PLATE COMPANY | CANTON | OH |
| FALLS RUBBER COMPANY | CUYAHOGA FALLS | OH |
| Farish Roofing & Siding | Springfield | OH |
| FARRELL CHEEK STEEL CO. | SANDUSKY | OH |
| FARRELL-CHEEK | SANDUSKY | OH |
| FASSON | PAINESVILLE | OH |
| FATIGUE TEXT LAB SONIC WRIGHT PATTERSON AFB | DAYTON | OH |
| FAULTLESS RUBBER COMPANY | ASHLAND | OH |
| FAVORITE STOVE RANGE COMPANY | PIQUA | OH |
| FAYETTE MEMORIAL HOSPITAL | CINCINNATI | OH |
| FEDERAL BUILDING | CINCINNATI | OH |
| FEDERAL BUILDING AND U.S. COURTHOUSE – WEST SECOND STREET | DAYTON | OH |
| FEDERAL COLOR – CHICKERING & ORIENT AVENUE | CINCINNATI | OH |
| FEDERAL COLOR LABORATORIES | CINCINNATI | OH |
| FEDERAL CREOSOTING COMPANY | TOLEDO | OH |
| Federal Glass | Columbus | OH |
| FEDERAL GLASS COMPANY | COLUMBUS | OH |
| FEDERAL KNITTING MILLS COMPANY | CLEVELAND | OH |
| FEDERAL OFFICE BLDG | CLEVELAND | OH |
| FEDERAL OFFICE BUILDING | TOLEDO | OH |
| FEDERAL OFFICE BUILDING – 6TH & MAIN | CINCINNATI | OH |
| FEDERAL OFFICE BUILDING & COURTHOUSE | CINCINNATI | OH |
| FEDERAL OFFICE BUILDING, E. T. SAMPSON, LAKESIDE AND E. 9TH ST. | CLEVELAND | OH |
| FEDERAL OFFICE BUILDING, LAKESIDE AVE. & E. 9th ST., FRANK BRISCOE COMPANY, INC., E. T. SAMPSON | CLEVELAND | OH |
| FEDERAL OFFICE BUILDING, N.E. CORRIDOR | CLEVELAND | OH |
| Federal Paper Board | Steubenville | OH |
| FEDERAL RESERVE | CINCINNATI | OH |
| FEDERAL RESERVE BANK | CLEVELAND | OH |
| FEDERAL STEEL | CLEVELAND | OH |
| FELDMAN BROS. CO. | CLEVELAND | OH |
| FEPCO | CINCINNATI | OH |
| FEROIT BROS. | AKRON | OH |
| FEROSLAG | LORAIN | OH |
| Ferro | East Liverpool | OH |
| Ferro Alloys Division | Ashtabula/Ceico | OH |
| Ferro Corp | Cleveland | OH |
| FERRO CORP | EAST SPARTA | OH |
| FERRO CORP | ELYRIA | OH |
| FERRO CORP | PERRYSBURG | OH |
| FERRO CORP. | CLEVELAND | OH |
| FERRO CORPORATION | ZANESVILLE | OH |
| FERRO CORPORATION | CLEVELAND | OH |
| FERRO ENGINEER | CLEVELAND | OH |
| FERRO ENGINEERING | CLEVELAND | OH |
| Ferro Industrial Products | Cleveland | OH |
| FERRO MACHINE AND FINERY COMPANY | CLEVELAND | OH |
| FERRODYNE | CLEVELAND | OH |
| FERROSLAG | LORAIN | OH |
| FIBERGLAS TOWER | TOLEDO | OH |
| FIBERGLASS TOWER | TOLEDO | OH |
| FIDELITY COAL & SUPPLY CO. | LIME | OH |
| FIELD W. SWEZEY | FOSTORIA | OH |
| FIRELANDS SUPPLY | NORWALK | OH |
| Fireproof Block Company | Columbus | OH |
| Firestone | Akron | OH |
| FIRESTONE | CANTON | OH |
| FIRESTONE RUBBER | CANTON | OH |
| FIRESTONE SYNTHETIC RUBBER | CANTON | OH |
| FIRESTONE SYNTHETIC RUBBER & LATEX | CANTON | OH |
| Firestone Synthetic Rubber & Latex Company | Akron | OH |
| Firestone Tire | Akron | OH |
| FIRESTONE TIRE & RUBBER CO | CANTON | OH |
| FIRESTONE TIRE & RUBBER CO – FIRESTONE PARK | AKRON | OH |
| Firestone Tire & Rubber Co. | Akron | OH |
| FIRESTONE TIRE & RUBBER CO. – PLANT #1 POWER HOUSE | AKRON | OH |
| FIRESTONE TIRE & RUBBER COMPANY – POWER HOUSE – PLANT 1 | AKRON | OH |
| FIRESTONE TIRE AND RUBBER COMPANY | AKRON | OH |
| FIRESTONE TIRE AND RUBBER COMPANY | SOUTH AKRON | OH |
| FIRST ENERGY | LORAIN | OH |
| FIRST NATIONAL BANK | CANTON | OH |
| FIRST NATIONAL BANK – TRI COUNTY | CINCINNATI | OH |
| FIRST NATIONAL BANK BUILDING | CINCINNATI | OH |
| FIRST U.P. CHURCH | CANTON | OH |
| FIRSTENERGY CORPORATION | OREGON | OH |
| FIRSTENERGY CORPORATION | GENEVA | OH |
| FIRSTENERGY CORPORATION | CLEVELAND | OH |
| FISHER BODY | ELYRIA | OH |
| Fisher Body And Casting – Coit Rd Plant | Cleveland | OH |
| FISHER BODY COMPANY | NORWOOD | OH |
| FISHER BODY CORPORATION – Div. Of General Motors | CLEVELAND | OH |
| FISHER BODY DIV – BOILER HOUSE | EUCLID | OH |
| Fisher Body Div Gmc | Columbus | OH |
| FISHER BODY DIVISION | EUCLID | OH |
| FISHER BODY DIVISION GENERAL MOTORS CORP – COIT RD PLANT | CLEVELAND | OH |
| Fisher Body Division of General Motors | Euclid | OH |
| FISHER BODY DIVISION OF GENERAL MOTORS CORPORATION | MANSFIELD | OH |
| FISHER BODY DIVISION OF GENERAL MOTORS CORPORATION | HAMILTON | OH |
| FISHER FOOD | ELYRIA | OH |
| FISHER INDUSTRIES, INCORPORATED | CINCINNATI | OH |
| FITZPATRICK AND HOEPFNER | COLUMBUS | OH |
| FITZSIMONS COMPANY | YOUNGSTOWN | OH |
| FLEISCHMANN COMPANY | CINCINNATI | OH |
| FLEXIBLE COMPANY | LOUDONVILLE | OH |
| FLIGHT PROPULSION LAB. DEPT. – EVENDALE PLANT BLDG 200 | CINCINNATI | OH |
| FLIGHT PROPULSION LABORATORY DEPT. – RECEIVING BLDG. 601 | CINCINNATI | OH |
| Flintkote | Ravenna | OH |
| Flow A Matic | Columbus | OH |
| FLOWER COAL & SUPPLY CO. | ASHTABULA | OH |
| FLOYD BOOTH COMPANY | YOUNGSTOWN | OH |
| FLUOR CORPORATION | TOLEDO | OH |
| FLUOR INCORPORATED | HAVERHILL | OH |
| FOB PLENUMS | CINCINNATI | OH |
| FOMOCO | CLEVELAND | OH |
| FOMOCO DUCT INSULATION | CINCINNATI | OH |
| FOOD SERVICES | CLEVELAND | OH |
| FOOS MANUFACTURING COMPANY | SPRINGFIELD | OH |
| FORD | DEARBORN | OH |
| FORD | LORAIN | OH |
| FORD – ENGINE PLANT | CLEVELAND | OH |
| FORD ALUMINUM FOUNDRY | BROOK PARK | OH |
| FORD CANTON FORGE PLANT | CANTON | OH |
| FORD ENGINE PLANT 2 | CLEVELAND | OH |
| FORD ENGINE PLANT 2 C/O CLEVELAND TRANSFER CO | CLEVELAND | OH |
| FORD ENGINE PLANT NO 2 | CLEVELAND | OH |
| FORD ENGINE PLANT NO 2 – CLEVELAND TRANSFER CO. | CLEVELAND | OH |
| Ford Foundry | Brookpark | OH |
| Ford Foundry | Cleveland | OH |
| Ford Foundry | Parma | OH |
| Ford Foundry | Lorain | OH |
| Ford Foundry | Middleburg Heights | OH |
| Ford Foundry | North Ridgeville | OH |
| FORD FOUNDRY | BROOK PARK | OH |
| FORD GLASS CO. LIBBY OWENS | TOLEDO | OH |
| FORD LORAIN ASSEMBLY PLANT | LORAIN | OH |
| Ford Mortor Company | Lorain | OH |
| Ford Motor | Cleveland | OH |
| FORD MOTOR | LORAIN | OH |
| FORD MOTOR | LIMA | OH |
| FORD MOTOR | CANTON | OH |
| Ford Motor Brookpark | Brookpark | OH |
| FORD MOTOR CO | LORAIN | OH |
| FORD MOTOR CO | CANTON | OH |
| FORD MOTOR CO – ADMINISTRATION BUILDING | CANTON | OH |
| FORD MOTOR CO – BOILER HOUSE | WALTON HILLS VILLAGE | OH |
| FORD MOTOR CO – CANTON FORGE PLANT | CANTON | OH |
| FORD MOTOR CO – CLEVELAND ENGINE PLANT 1 | CLEVELAND | OH |
| FORD MOTOR CO – CLEVELAND FOUNDRY | BROOK PARK | OH |
| FORD MOTOR CO – ENGINE PLANT | LIMA | OH |
| FORD MOTOR CO – ENGINE PLANT #2 | CLEVELAND | OH |
| FORD MOTOR CO – FORGE PLANT – POWER HOUSE | Canton | OH |
| FORD MOTOR CO – FORGE PLANT POWER HOUSE | CANTON | OH |
| FORD MOTOR CO – LORAIN ASSEMBLY PLANT | LORAIN | OH |
| FORD MOTOR CO – NEW ENGINE PLANT | LIMA | OH |
| FORD MOTOR CO – ROUTE #2 | LORAIN | OH |
| FORD MOTOR CO BOILER ROOM | WALTON HILLS VILLAGE | OH |
| FORD MOTOR CO FORGE PLANT GARAGE BLDG | CANTON | OH |
| FORD MOTOR CO, CANTON FORGE PLANT | CANTON | OH |
| FORD MOTOR CO. | WALTON HILLS | OH |
| Ford Motor Co. | Lima | OH |
| Ford Motor Co. | Lorain | OH |
| FORD MOTOR CO., CANTON FORGE PLANT | CANTON | OH |
| FORD MOTOR COMPANY | FOSTORIA | OH |
| FORD MOTOR COMPANY | SANDUSKY | OH |
| FORD MOTOR COMPANY | CANTON | OH |
| Ford Motor Company | Sharonville | OH |
| Ford Motor Company | Brookpark | OH |
| FORD MOTOR COMPANY | BROOK PARK | OH |
| Ford Motor Company | Cleveland | OH |
| FORD MOTOR COMPANY | LORAIN | OH |
| FORD MOTOR COMPANY – 2159 KENDEL ROAD | CINCINNATI | OH |
| Ford Motor Company – Cleveland Engine Plant #2 | Brook Park | OH |
| FORD MOTOR COMPANY – CLEVELAND FOUNDRY | CLEVELAND | OH |
| FORD MOTOR COMPANY – FOUNDRY | BROOKPARK | OH |
| FORD MOTOR COMPANY – Ohio Forging Plant | CANTON | OH |
| FORD MOTOR COMPANY – WALTON HILLS PLANT | BEDFORD/WALTON HILLS | OH |
| FORD MOTOR COMPANY (FMC) | SANDUSKY | OH |
| FORD MOTOR COMPANY, CLEVELAND FOUNDRY | BROOK PARK | OH |
| FORD MOTOR COMPANY, SPARK PLUG DIVISION | FOSTORIA | OH |
| Ford Motor Plant | Cleveland | OH |
| Ford Motors | Brook Park | OH |
| Ford Motors | Walton Hills | OH |
| FORD PLATE GLASS COMPANY | TOLEDO | OH |
| FORD, CLEVELAND FOUNDRY | BROOK PARK | OH |
| FORD-CANTON FORGE PLANT | CANTON | OH |
| FOREST CITY | CLEVELAND | OH |
| FOREST CITY BREWING COMPANY | TOLEDO | OH |
| Forest City Foundry | Cleveland | OH |
| FOREST HILLS SCHOOL | CINCINNATI | OH |
| FOREST PARK MIDDLE SCHOOL – HAMILTON COUNTY | CINCINNATI | OH |
| FOREST PARK MIDDLE SCHOOL, HAMILTON COUNTY | CINCINNATI | OH |
| FORGE PRODUCTS | CLEVELAND | OH |
| FORM-A-TOOL | CLEVELAND | OH |
| FORMICA COMPANY | CINCINNATI | OH |
| FORMICA CORP – R&D BLDG | CINCINNATI | OH |
| FORMICA CORPORATION | CINCINNATI | OH |
| FORMICA CORPORATION | EVENDALE | OH |
| FORMICA CORPORATION | EVANSDALE | OH |
| Formica Corporation | Evandale | OH |
| FORMICA INSULATION COMPANY | CINCINNATI | OH |
| FORMICA PRESS | READING | OH |
| FORREST TOWEL SUPPLY COMPANY | COLUMBUS | OH |
| FORT HAMILTON ‘HUGHES MEMORIAL HOSPITAL | HAMILTON | OH |
| FORT HAMILTON-HUGHES HOSPITAL | HAMILTON | OH |
| FORT STEUBEN MALL – KAUFMANN’S DEPARTMENT STORE | STEUBENVILLE | OH |
| FORUM HEALTH, HOLDING COMPANY | YOUNGSTOWN | OH |
| FOSECO | CLEVELAND | OH |
| Foseco Chemical Company | Cleveland | OH |
| Foseco Corp. | Berea | OH |
| Foseco Corp. | Brookpark | OH |
| Foseco Foundry | Middleburg | OH |
| FOSECO INC | BEREA | OH |
| FOSECO INC | BROOKPARK | OH |
| Foseco Metallurgical | Cleveland | OH |
| FOSECO, INC. | BROOK PARK | OH |
| Foseco, Inc. | Cleveland | OH |
| FOSTER WHEELER | CANTON | OH |
| FOSTORIA ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | FOSTORIA | OH |
| Fostoria Foundry | Fostoria | OH |
| Fostoria Industries | Fostoria | OH |
| FOUNDRY EQUIPMENT COMPANY | CLEVELAND | OH |
| FOUNDRY SERVICES, INC. | BROOK PARK | OH |
| Fox Paper Company | Cincinnati | OH |
| FOX PAPER COMPANY | LOCKLAND | OH |
| FOX RIVER PAPER COMPANY | URBANA | OH |
| FOX VALLEY CORPORATION | URBANA | OH |
| FPLD BLDG. 700 – DOCK 1 | EVENDALE | OH |
| FPLD BLDG. 700-1 – FRED BURGGRAF NO. 300 | CINCINNATI | OH |
| FRANCE MFG. | WESTLAKE | OH |
| FRANCISCAN SISTERS OF THE POOR HOSPITAL, MT. AIRY CAMPUS | CINCINNATI | OH |
| FRANK BILLINGS | CLEVELAND | OH |
| FRANK HILL SMITH | DAYTON | OH |
| FRANK M. TAIT STATION DAYTON POWER & LIGHT | DAYTON | OH |
| FRANKLIN BOARD AND PAPER COMPANY | FRANKLIN | OH |
| FRANKLIN BOXBOARD CORPORATION | FRANKLIN | OH |
| FRANKLIN BOXBOARD CORPORATION | CARLISLE | OH |
| FRANKLIN CITY* | FRANKLIN | OH |
| Franklin Enterprises, Incorporated | Cincinnati | OH |
| Franklin Enterprises, Incorporated | Franklin | OH |
| FRANKLIN NURSING HOME | FRANKLIN | OH |
| Franklin Plating | Columbus | OH |
| FRANKLIN SCHOOL | CANTON | OH |
| FRASCH PROCESS SODA COMPANY | CLEVELAND | OH |
| FRASER PAPERS | WEST CARROLLTON | OH |
| FRASER PAPERS, INCORPORATED | WEST CARROLLTON | OH |
| FRED CHRISTEN & SONS COMPANY | TOLEDO | OH |
| FRED CHRISTEN AND SONS | TOLEDO | OH |
| FRED’S STAIN GLASS | NORTH OLMSTEAD | OH |
| FREIBERG & WORKUM | CINCINNATI | OH |
| FREIBERG & WORKUM | LYNCHBURG | OH |
| FREIBERG WORKUM COMPANY | LYNCHBURG | OH |
| FREIBERY WORKUM COMPANY | LYNCHBURG | OH |
| FREMONT GAS AND ELECTRIC LIGHT COMPANY – POWER STATION | FREMONT | OH |
| FREMONT PROGRESS AIRPORT | FREMONT | OH |
| FRENCH BAUER, INCORPORATED | CINCINNATI | OH |
| FRENCH BROTHERS BAUER COMPANY | CINCINNATI | OH |
| FREYN BROTHERS, INC. | NAPOLEON | OH |
| FRICTION PRODUCTS CO. | MEDINA | OH |
| FRIEND PAPER COMPANY | WEST CARROLLTON | OH |
| FRIEND PAPER TABLET COMPANY | WEST CARROLLTON | OH |
| Frigidaire | Dayton | OH |
| Frigidaire Corporation | Moraine | OH |
| FRIGIDAIRE DIVISION | DAYTON | OH |
| FRIGIDAIRE DIVISION OF GENERAL MOTORS CORPORATION | DAYTON | OH |
| Frigidaire Plant #3 | Kettering | OH |
| Frigidare Corp – (General Motors Corp.) | Moraine | OH |
| Fritinger Lumber Co | Middlefield | OH |
| FRITO LAY, INCORPORATED | WOOSTER | OH |
| Fruehauf Trailer | Avon Lake | OH |
| FRYMAN-KUCH CO. | NEW OXFORD | OH |
| FT. HAMILTON HOSPITAL | HAMILTON | OH |
| Fulton Foundry | Cleveland | OH |
| FULTON TUBING | ARCHBOLD | OH |
| FUSION INC. | WILLOUGHBY | OH |
| G&W INDUSTRIES | CLEVELAND | OH |
| G. E. HULL – LINE 10 BLDG. 30 | MARIETTA | OH |
| G. WILDER MULH BWG. COMPANY | POMEROY | OH |
| G.C. KUHLMAN CAR COMPANY | CLEVELAND | OH |
| G.E. | LOUISVILLE | OH |
| G.E. | TIFFIN | OH |
| G.E. | WARREN | OH |
| G.E. | CLEVELAND | OH |
| G.E. | AVON | OH |
| G.E. | HENDERSONVILLE | OH |
| G.E. | LOGAN | OH |
| G.E. | CIRCLEVILLE | OH |
| G.E. | EUCLID | OH |
| G.E. | DOVER | OH |
| G.E. | BELLEVUE | OH |
| G.E. | BUCYRUS | OH |
| G.E. | WILLOUGHBY | OH |
| G.E. | RAVENNA | OH |
| G.E. | RICHMOND HTS | OH |
| G.E. | NILES | OH |
| G.H. FRIEND PAPER COMPANY | WEST CARROLLTON | OH |
| G.H. FRIEND PAPER TABLET COMPANY | WEST CARROLLTON | OH |
| G.H.R. FOUNDRY | DAYTON | OH |
| G.S. EQUIPMENT | CLEVELAND | OH |
| Galion Community Hospital | Galion | OH |
| GALION LUMBER COMPANY | GALION | OH |
| Gallery of Fine Arts | Columbus | OH |
| GALLIPOLIS STATE HOSPITAL | GALLIPOLIS | OH |
| GAMBRINOUS STEEL PLANT | CANTON | OH |
| GAMBRINUS STEEL PLANT | STARK | OH |
| GARAWAY HIGH SCHOOL | CANTON | OH |
| GARDEN CENTER OF GREATER CLEVELAND | CLEVELAND | OH |
| Gardner Board & Carton | Middletown | OH |
| GARDNER BOARD AND CARTON COMPANY | CINCINNATI | OH |
| GARDNER PAPER BOARD COMPANY | MIDDLETOWN | OH |
| GARDNER PAPER COMPANY | MIDDLETOWN | OH |
| GARDNER PAPER MILLS | MIDDLETON | OH |
| Gardner Richardson Company | Cleveland | OH |
| GARFIELD HIGH SCHOOL | CLEVELAND | OH |
| GARFIELD SCHOOL | CANTON | OH |
| GARFIELD SCHOOL | PORTSMOUTH | OH |
| GARFIELD TOWER – 15TH FLOOR | CINCINNATI | OH |
| GARFORD MANUFACTURING COMPANY | ELYRIA | OH |
| GARFORD MOTOR TRUCK COMPANY | LIMA | OH |
| GARLOCK-FRAZEE LAUNDRY COMPANY | CLEVELAND | OH |
| GARRETT-CROMWELL ENGINEERING COMPANY | CLEVELAND | OH |
| GARRY IRON AND STEEL COMPANY | YOUNGSTOWN | OH |
| GARTLAND-HASWELL-RENTSCHLER FOUNDRY COMPANY | DAYTON | OH |
| GAS ATMOSPHERES | CLEVELAND | OH |
| GAS ATMOSPHERES INC | CLEVELAND | OH |
| GATES MILLS | CHARDON | OH |
| GATX TERMINALS CORPORATION | MASURY | OH |
| GAVIN POWERHOUSE | CHESHIRE | OH |
| GAYLORD CONTAINER CORPORATION | DRESDEN | OH |
| GAYLORD CONTAINER CORPORATION | BALTIMORE | OH |
| GE AVIATION | EVENDALE | OH |
| GE CHEMICAL PRODUCTS PLANT | CLEVELAND | OH |
| GE CLEVELAND WIRE PLANT | CLEVELAND | OH |
| GEIGER BROTHERS | LOGAN | OH |
| GEIGER BROTHERS MECHANICAL SERVICES, INC. | LOGAN | OH |
| General Aluminum | Cleveland | OH |
| GENERAL AMERICAN TRANSPORTATION CORPORATION | MASURY | OH |
| GENERAL AMERICAN TRANSPORTATION CORPORATION – MASURY PLANT | MASURY | OH |
| GENERAL BATTERY CORP. | CLEVELAND | OH |
| GENERAL CHEMICAL | CLEVELAND | OH |
| GENERAL CHEMICAL CO | CLEVELAND | OH |
| GENERAL CHEMICAL COMPANY | WILLOW | OH |
| GENERAL CHEMICAL CORPORATION | CLEVELAND | OH |
| GENERAL CHEMICAL DIVISION, ALLIED CHEMICAL AND DYE CORPORATION | CLEVELAND | OH |
| GENERAL CONFERENCE OF THE SEVENTH-DAY ADVENTISTS | KETTERING | OH |
| GENERAL DRY BATTERIES, INC. | CLEVELAND | OH |
| GENERAL DRY BATTERY | CLEVELAND | OH |
| GENERAL DYNAMICS | LIMA | OH |
| General Electric | Cincinnati | OH |
| General Electric | Evendale | OH |
| General Electric | Evandale | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT | EVENDALE | OH |
| General Electric – Aviation Division Evendale Plant – Boiler #8 | Evendale | OH |
| General Electric – Aviation Division Evendale Plant – Building 421 Boiler #6 | Evendale | OH |
| General Electric – Aviation Division Evendale Plant – DUCT GROUP 1204 | Evendale | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 3906 | Evendale | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 4043 | Evendale | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 4174 | Cincinnati | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 4377 #5 | Cincinnati | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 4680 | Cincinnati | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT – DUCT GROUP 4691 | Cincinnati | OH |
| GENERAL ELECTRIC – AVIATION DIVISION EVENDALE PLANT -AST SERVICE SHOP – 156 CIRCLE FREEWAY DRIVE | Cincinnati | OH |
| GENERAL ELECTRIC – BUILDING 800 | CINCINNATI | OH |
| GENERAL ELECTRIC – COSHOCTON PLANT | COSHOCTON | OH |
| GENERAL ELECTRIC – EVENDALE PLANT | CINCINNATI | OH |
| General Electric – GE Lighting – Nela Park – Building 321 | CLEVELAND | OH |
| GENERAL ELECTRIC – HERMETIC MOTOR PLANT | TIFFIN | OH |
| GENERAL ELECTRIC – NELA PARK | EAST CLEVELAND | OH |
| GENERAL ELECTRIC – TUNGSTEN PRODUCTS PLANT | EUCLID | OH |
| GENERAL ELECTRIC (GE) | CLEVELAND | OH |
| GENERAL ELECTRIC (GE) | BELLEVUE | OH |
| GENERAL ELECTRIC (GE) | TIFFIN | OH |
| General Electric Circleville Lamp Plant Office | Circleville | OH |
| GENERAL ELECTRIC CO – AVIATION PLANT – BLDG. 703 – Gate 12 | EVENDALE | OH |
| GENERAL ELECTRIC CO – BLDG. 700 | EVENDALE | OH |
| GENERAL ELECTRIC CO – CHEMICAL PRODUCTS PLANT | CLEVELAND | OH |
| GENERAL ELECTRIC CO – CHEMICAL PRODUCTS PLANT – LAMP DIVISION | CLEVELAND | OH |
| GENERAL ELECTRIC CO – ELECTROMATERIALS PLANT | COSHOCTON | OH |
| GENERAL ELECTRIC CO – FLIGHT PROPULSION LABORATORY DEPT. | CINCINNATI | OH |
| General Electric Co Evendale Plant | Cincinnati | OH |
| GENERAL ELECTRIC CO. | CIRCLEVILLE | OH |
| GENERAL ELECTRIC CO. | CLEVELAND | OH |
| General Electric Company | Cleveland | OH |
| General Electric Company | Vaughn | OH |
| GENERAL ELECTRIC COMPANY | CIRCLEVILLE | OH |
| GENERAL ELECTRIC COMPANY | DOVER | OH |
| GENERAL ELECTRIC COMPANY | EVENDALE | OH |
| GENERAL ELECTRIC COMPANY – BRUSH PLANT | CLEVELAND | OH |
| GENERAL ELECTRIC COMPANY – COCHOCTON PLANT | COCHOCTON | OH |
| GENERAL ELECTRIC COMPANY – MAHONING GLASS PLANT | NILES | OH |
| GENERAL ELECTRIC COMPANY – NATIONAL LAMP WORKS – NELA PARK | EAST CLEVELAND | OH |
| GENERAL ELECTRIC COMPANY – NELA PARK | EAST CLEVELAND | OH |
| General Electric Jet Engine Test Center | Peebles | OH |
| GENERAL ELECTRIC LIGHTING Division | Cleveland | OH |
| GENERAL ELECTRIC TUNGSTEN PRODUCTS PLANT | Euclid | OH |
| GENERAL EXTRUSIONS | YOUNGSTOWN | OH |
| GENERAL FIREPROOFING COMPANY | YOUNGSTOWN | OH |
| General Foods Corp. | Akron | OH |
| GENERAL FOODS CORPORATION – MCCLURG ROAD | YOUNGSTOWN | OH |
| GENERAL HOSPITAL – BLOOD BANK – BURNET & EDEN AVENUES | CINCINNATI | OH |
| GENERAL HOSPITAL – OBSTETRICS – 1ST FLOOR – BURNET & EDEN AVENUES | CINCINNATI | OH |
| GENERAL HOSPITAL – RADIATION THERAPY LABORATORY – BURNET & EDEN AVENUES | CINCINNATI | OH |
| GENERAL HOSPITAL, BLOOD BANK, BURNET & EDEN AVES. | CINCINNATI | OH |
| GENERAL HOSPITAL, OBSTETRICS, 1ST FLOOR, BURNET & EDEN AVES. | CINCINNATI | OH |
| GENERAL HOSPITAL, RADIATION THERAPY LABORATORY, BURNET & EDEN AVES. | CINCINNATI | OH |
| General Industries | Elyria | OH |
| GENERAL INDUSTRIES COMPANY | ELYRIA | OH |
| GENERAL INSURANCE COMPANY – I71 & GALBRAITH | CINCINNATI | OH |
| General Mills | Lancaster | OH |
| GENERAL MILLS | TOLEDO | OH |
| GENERAL MILLS INC | Toledo | OH |
| GENERAL MILLS INCORPORATED – 1250 WEST LASKEY ROAD | TOLEDO | OH |
| GENERAL MILLS, INC. | LANCASTER | OH |
| GENERAL MILLS, INCORPORATED | LANCASTER | OH |
| GENERAL MILLS, INCORPORATED, 1250 WEST LASKEY RD. | TOLEDO | OH |
| General Motors | Defiance | OH |
| General Motors | Dayton | OH |
| General Motors | Columbus | OH |
| General Motors | Lordstown | OH |
| GENERAL MOTORS | NORWOOD | OH |
| General Motors | Toledo | OH |
| GENERAL MOTORS | HUDSON | OH |
| GENERAL MOTORS | ELYRIA | OH |
| General Motors | Mansfield | OH |
| General Motors | Warren | OH |
| GENERAL MOTORS | PARMA | OH |
| GENERAL MOTORS – ALLISON DIVISION – AEROPRODUCTS | VANDALIA | OH |
| General Motors – Central Foundry | Defiance | OH |
| GENERAL MOTORS – CHEVROLET PLANT | PARMA | OH |
| GENERAL MOTORS – CHEVROLET PLANT – BROOKS PARK & STUMP ROAD | CLEVELAND | OH |
| GENERAL MOTORS – FISHER BODY COMPANY – 13815 CORT ROAD | CLEVELAND | OH |
| GENERAL MOTORS – FISHER BODY PLANT | MANSFIELD | OH |
| General Motors / Inland Manufacturing | Dayton | OH |
| General Motors Company, Chevy Plant | Cleveland | OH |
| GENERAL MOTORS CORP. | CANTON | OH |
| GENERAL MOTORS CORP. | DEFIANCE | OH |
| GENERAL MOTORS CORP. | EUCLID | OH |
| GENERAL MOTORS CORP. | TOLEDO | OH |
| GENERAL MOTORS CORP. | MANSFIELD | OH |
| GENERAL MOTORS CORP. – PLANT NO. 10 | WARREN | OH |
| GENERAL MOTORS CORP., PLANT NO. 10 | WARREN | OH |
| GENERAL MOTORS CORP; PACKARD ELECTRIC DIV | WARREN | OH |
| General Motors Corporation | Columbus | OH |
| GENERAL MOTORS CORPORATION | BANDUSKY | OH |
| GENERAL MOTORS CORPORATION | HUDSON | OH |
| GENERAL MOTORS CORPORATION | DEFIANCE | OH |
| GENERAL MOTORS CORPORATION | BROOKLYN VILLAGE | OH |
| GENERAL MOTORS CORPORATION | CLEVELAND | OH |
| GENERAL MOTORS CORPORATION | NORWOOD | OH |
| GENERAL MOTORS CORPORATION | SANDUSKY | OH |
| GENERAL MOTORS CORPORATION – EUCLID DIVISION | EUCLID/HUDSON | OH |
| GENERAL MOTORS CORPORATION – FISHER BODY DIVISION – COIT ROAD PLANT | CLEVELAND | OH |
| General Motors Corporation ? Inland Division | Dayton | OH |
| GENERAL MOTORS CORPORATION CLEVELAND DIESEL ENGINE COMPANY DIVISION | BROOKLYN VILLAGE | OH |
| GENERAL MOTORS CORPORATION CPC PLANT | MANSFIELD | OH |
| GENERAL MOTORS CORPORATION DIESEL ENGINE DIVISION | CLEVELAND | OH |
| GENERAL MOTORS CORPORATION FRIGIDAIRE | DAYTON | OH |
| GENERAL MOTORS CORPORATION, (19096) | MANSFIELD | OH |
| General Motors Corporation, Assembly Plant | Warren | OH |
| GENERAL MOTORS CORPORATION, ASSEMBLY PLANT (19078) | WARREN | OH |
| GENERAL MOTORS CORPORATION, DELPHI CHASSIS 41002 | DAYTON | OH |
| GENERAL MOTORS CORPORATION, EUCLID DIVISION | HUDSON | OH |
| GENERAL MOTORS CORPORATION, EUCLID DIVISON | HUDSON | OH |
| GENERAL MOTORS CORPORATION, FISHER BODY DIVISION | EUCLID | OH |
| General Motors Corporation, Plant No. 10 | Warren | OH |
| GENERAL MOTORS CORPORATION, TERNSTEDT MANUFACTURING DIVISIONISION | COLUMBUS | OH |
| GENERAL MOTORS DELPHI CHASSIS (41001)DEPT. 52 | DAYTON | OH |
| General Motors Fisher Body | Parma | OH |
| General Motors Fisher Body | Mansfield | OH |
| GENERAL MOTORS INLAND MANUFACTURING | DAYTON | OH |
| GENERAL MOTORS TERNSTEDT | ELYRIA | OH |
| GENERAL MOTORS, CHEVROLET PLANT, BROOKS PARK & STUMP RD. | CLEVELAND | OH |
| GENERAL MOTORS, DELCO AIR DIVISION | MORAINE | OH |
| GENERAL MOTORS, EUCLID DIVISION | HUDSON | OH |
| General Motors, Fisher Body | Norwood | OH |
| GENERAL MOTORS, FISHER BODY COMPANY, 13815 COIT RD. | CLEVELAND | OH |
| General Motors, Foundry | Defiance | OH |
| GENERAL PROTESTANT ORPHAN HOME | CINCINNATI | OH |
| GENERAL REFRACTORIES | WARREN | OH |
| GENERAL TIRE | CANTON | OH |
| General Tire & Rubber | Akron | OH |
| General Tire & Rubber | Toledo | OH |
| GENERAL TIRE & RUBBER CO | ASHTABULA | OH |
| GENERAL TIRE & RUBBER CO – CHEMICAL DIVISION | ASHTABULA | OH |
| GENERAL TIRE & RUBBER CO. | ASHTABULA | OH |
| General Tire & Rubber Company | Akron | OH |
| GENERAL TIRE AND RUBBER COMPANY | AKRON | OH |
| GENERAL TIRE AND RUBBER COMPANY, CHEMICAL/PLASTICS DIVISION | NEWCOMERSTOWN | OH |
| GENERAL TIRE AND RUBBER COMPANY, TEXTILEATHER DIVISION | TOLEDO | OH |
| GENERAL TIRE CHEMIAL PLANT | ASHTABULA | OH |
| GENERAL TIRE CHEMICAL PLANT – MIDDLEROAD | ASHTABULA | OH |
| General Tire Co. | Akron | OH |
| GENERAL TIRE RESEARCH | CANTON | OH |
| GENERAL WELDING SUPPLY | CLEVELAND | OH |
| Geneva Metal Wheel Company | Geneva | OH |
| GENEVE MEMORIAL HOSPITAL | GENEVA | OH |
| GENON ENERGY – NILES GENERATING PLANT | NILES | OH |
| GEO. H. PORTER HEAT TREATING COMPANY | CLEVELAND | OH |
| GEO. S. RIDER COMPANY | CLEVELAND | OH |
| GEO. W. COTTRELL & SON | TORONTO | OH |
| GEORGE B. SENNETT | YOUNGSTOWN | OH |
| GEORGE E. MILLIGAN | LORAIN | OH |
| GEORGE E. MILLIGAN OFFICE | ELYRIA | OH |
| GEORGE HEEKIN JUNIOR RESIDENCE | CINCINNATI | OH |
| GEORGE J. RENNER | YOUNGSTOWN | OH |
| GEORGE J. RENNER BREWING COMPANY | AKRON | OH |
| GEORGE J. RENNER, JR. | YOUNGSTOWN | OH |
| GEORGE O. CROMWELL | TOLEDO | OH |
| GEORGE O`NEIL NEW BOSTON | SCIOTO | OH |
| GEORGE O’NEIL NEW BOSTON COKE CORPORATION | NEW BOSTON | OH |
| GEORGE PACIFIC PAPER | CARLISLE | OH |
| GEORGE PORTER HEAT TREATI | CLEVELAND | OH |
| GEORGE W. COTTRELL & SON | TORONTO | OH |
| GEORGE W. DITTMAN | CINCINNATI | OH |
| GEORGE WASHINGTON COMPANY | CLEVELAND | OH |
| GEORGE WIEDEMANN BREWING COMPANY | CINCINNATI | OH |
| Georgia Pacific – Equipment | Toledo | OH |
| GEORGIA PACIFIC CORPORATION | TOLEDO | OH |
| GEORGIA PACIFIC CORPORATION – 1975 WATKINS ROAD | COLUMBUS | OH |
| GEORGIA-PACIFIC CORPORATION, 1975 WATKINS RD. | COLUMBUS | OH |
| GERMAN METHODIST ORPHAN ASYLUM | BEREA | OH |
| GH FRIEND PAPER AND TABLET COMPANY | WEST CARROLLTON | OH |
| GIBSON ART BUILDING | CINCINNATI | OH |
| GIBSON GREETING CARD COMPANY | CINCINNATI | OH |
| Gibson Homans Co. | Cleveland (Twinsburg) | OH |
| Gibson Homans Company | Cleveland | OH |
| GIBSONBURG LIME PRODUCTS COMPANY | GIBSONBURG | OH |
| GIDDING JENNY BARKHARDT – COLERAIN & SPRINGDALE | CINCINNATI | OH |
| GIDDING JENNY BURKHARDT – COLERAIN & SPRINGDALE | CINCINNATI | OH |
| GINGISS FORMAL WEAR – NORTHGATE MALL | CINCINNATI | OH |
| GIRARD IRON COMPANY | GIRARD | OH |
| GLASS COTE PRODUCTS DIVISION | CLEVELAND | OH |
| GLASS-EDSELL PAPER COMPANY | DELAWARE | OH |
| GLASSTECH INC. | TOLEDO | OH |
| Glastic Corporation | Cleveland | OH |
| GLATFELTER | CHILLICOTHE | OH |
| GLEN DARBY TURF FARM | MARYSVILLE | OH |
| GLEN L. MARTIN CHEMICAL PLANT | ASHTABULA | OH |
| Glen L. Martin Co. | Painesville | OH |
| GLENDALE AVENUE PLANT | TOLEDO | OH |
| GLENDALE PLANT SIDING | TOLEDO | OH |
| GLENN L. MARTIN COMPANY | PAINESVILLE | OH |
| GLENN L. MARTIN COMPANY | EAST CLEVELAND | OH |
| GLENN SMITH CO; COAL BLOX PLANT | CLEVELAND | OH |
| GLIDHILL MACHINERY | GALION | OH |
| GLOBE CORPORATION – 490 EAST MCMILLAN | CINCINNATI | OH |
| GLOBE CORPORATION – 4TH & WALNUT | CINCINNATI | OH |
| GLOBE FOUNDRY | DAYTON | OH |
| GLOBE MATERIAL | WINDHAM | OH |
| GLOBE SOAP COMPANY | ST. BERNARD | OH |
| GLOBE STEEL ABRASIVE | MANSFIELD | OH |
| GLOBE WERNICKE COMPANY | NORWOOD | OH |
| GM | Defiance | OH |
| GM CHEVROLET DIV | CLEVELAND | OH |
| GM CORPORATION | WARREN | OH |
| GM Delphi | Dayton | OH |
| GM Frigidaire | Dayton | OH |
| GM Inland | Dayton | OH |
| GM Inland Manufacturing Division | Dayton | OH |
| GMC CHEVROLET | CLEVELAND | OH |
| GOEBEL BREWING COMPANY | TOLEDO | OH |
| GOOD SAMARITAN HOSPITAL | ZANESVILLE | OH |
| GOOD SAMARITAN HOSPITAL | CINCINNATI | OH |
| GOOD SAMARITAN HOSPITAL | DAYTON | OH |
| GOODALL COMPANY | CINCINNATI | OH |
| GOODRICH CHEM CO | AKRON | OH |
| GOODRICH CHEM CO | AVON LAKE | OH |
| GOODRICH CHEM CO PLANT 3 | AKRON | OH |
| GOODRICH CHEM CO PLASTICIZER BLDG | AVON LAKE | OH |
| GOODRICH CHEMICAL COMPANY | AVON LAKE | OH |
| GOODRICH EXPERIMENTAL LAB | AVON LAKE | OH |
| GOODRICH EXPERIMENTAL STATION | AVON LAKE | OH |
| GOODRICH GULF | AVON LAKE | OH |
| GOODRICH GULF CHEMICAL CO. | AVON LAKE | OH |
| GOODRICH GULF CORP. – PILOT PLANT | AVON LAKE | OH |
| GOODRICH PLANT 3 | AKRON | OH |
| GOODRICH RESEARCH CENTER | BRECKSVILLE | OH |
| GOODYEAR | AKRON | OH |
| Goodyear / Aerospace / Goodyear Tire Company | Akron | OH |
| GOODYEAR AEROSPACE | CANTON | OH |
| GOODYEAR AIRCRAFT | CANTON | OH |
| Goodyear Aircraft | Akron | OH |
| GOODYEAR AIRCRAFT CO. | CANTON | OH |
| GOODYEAR AIRCRAFT CO. – PLANT D | AKRON | OH |
| GOODYEAR AIRCRAFT CORPORATION | AKRON | OH |
| GOODYEAR AIRCRAFT HYDROTHERM | CANTON | OH |
| GOODYEAR AIRCRAFT PLANT | AKRON | OH |
| GOODYEAR AIRCRAFT PLANT D | AKRON | OH |
| GOODYEAR AIRCRAFT PLANT D | CANTON | OH |
| GOODYEAR ATOMIC CORP | SARGENTS | OH |
| Goodyear Atomic Corp. | Sargent | OH |
| GOODYEAR ATOMIC CORPORATION | PORTSMOUTH | OH |
| GOODYEAR ATOMIC CORPORATION | TEAYS | OH |
| GOODYEAR ATOMIC CORPORATION – PORTSMOUTH GASEOUS DIFFUSION PLANT | PIKETON | OH |
| Goodyear Atomic Energy Plant | Piketon | OH |
| GOODYEAR BLDG 54 | CLEVELAND | OH |
| GOODYEAR BUILDING 54 | CLEVELAND | OH |
| Goodyear Plant | Akron | OH |
| GOODYEAR PLANT 2 POWERHOUSE | AKRON | OH |
| GOODYEAR PLANT 2 POWERHOUSE, 54 1 | AKRON | OH |
| GOODYEAR SYNTHETIC RUBBER CO. | AKRON | OH |
| GOODYEAR TIRE | AKRON | OH |
| GOODYEAR TIRE | BROOKPARK | OH |
| GOODYEAR TIRE | BEREA | OH |
| Goodyear Tire & Rubber | Akron | OH |
| Goodyear Tire & Rubber | Logan | OH |
| Goodyear Tire & Rubber | St Marys | OH |
| GOODYEAR TIRE & RUBBER – BUILDINGS 21 & 29 – PLANT #1 | AKRON | OH |
| GOODYEAR TIRE & RUBBER – PLANT #1 – INTERPLANT LINE | AKRON | OH |
| GOODYEAR TIRE & RUBBER – PLANT #5 – 600 LANDON AVENUE & ARCHWOOD | AKRON | OH |
| GOODYEAR TIRE & RUBBER – RIVER & JOHNSON STREETS | AKRON | OH |
| GOODYEAR TIRE & RUBBER CO | CANTON | OH |
| GOODYEAR TIRE & RUBBER CO | AKRON | OH |
| GOODYEAR TIRE & RUBBER CO – BLDG 132-A – PLANT 58 | AKRON | OH |
| GOODYEAR TIRE & RUBBER CO – BLDG 63 | AKRON | OH |
| GOODYEAR TIRE & RUBBER CO – PLANT 3 | AKRON | OH |
| GOODYEAR TIRE & RUBBER CO – RESEARCH BLDG | AKRON | OH |
| Goodyear Tire & Rubber Company | Akron | OH |
| Goodyear Tire & Rubber Company – Plant | Akron | OH |
| GOODYEAR TIRE & RUBBER, BUILDINGS 21 & 29, PLANT #1 | AKRON | OH |
| GOODYEAR TIRE & RUBBER, PLANT #1, INTERPLANT LINE | AKRON | OH |
| GOODYEAR TIRE & RUBBER, PLANT #5, 600 LANDON AVE. & ARCHWOOD | AKRON | OH |
| GOODYEAR TIRE & RUBBER, RIVER & JOHNSON STS. | AKRON | OH |
| Goodyear Tire and Rubber | Akron | OH |
| Goodyear Tire and Rubber Co. | Akron | OH |
| GOODYEAR TIRE AND RUBBER COMPANY | AKRON | OH |
| GOODYEAR TIRE AND RUBBER COMPANY | ST. MARYS | OH |
| GOODYEAR TIRE AND RUBBER COMPANY, ST. MARY’S MANUFACTURING DIVISION | ST. MARYS | OH |
| GORDON AND MAXWELL COMPANY | HAMILTON | OH |
| GORELL SCHOOL | CANTON | OH |
| GORGE POWER PLANT | AKRON | OH |
| GORMAN RUPP COMPANY | MANSFIELD | OH |
| GORMAN-LAVELLE CORPORATION | CLEVELAND | OH |
| Gould Battery | Proctorville | OH |
| Gould Inc. | Cleveland | OH |
| GOULD, INC. | CLEVELAND | OH |
| GRABLER MANUFACTURING | TIFFIN | OH |
| GRABLER MANUFACTURING | CLEVELAND | OH |
| GRACE EVANGELICAL CHURCH | CANTON | OH |
| GRANDVIEW YD. – N. W. BLVD. TRACK | COLUMBUS | OH |
| GRANGE MUTUAL CASUALTY COMPANY – HEADQUARTERS BUILDING – HIGH STREET | COLUMBUS | OH |
| GRANITE CLAY COMPANY | MOGADORE | OH |
| GRANT ELEMENTARY SCHOOL – VICTORIA AVENUE | LAKEWOOD | OH |
| GRANVILLE TECHNICAL CENTER | GRANVILLE | OH |
| GRASSELLI CHEMICAL COMPANY | CLEVELAND | OH |
| GRASSELLI CHEMICAL COMPANY | NILES | OH |
| GRASSELLI CHEMICAL DEPARTMENT | CLEVELAND | OH |
| GRAVEL BANK POWERHOUSE | MARIETTA | OH |
| Gray Iron Foundry | Baberton | OH |
| GREAT LAKES CARBON | MARION | OH |
| GREAT LAKES CHAR COMPANY | MARION | OH |
| GREAT LAKES COAL MINING COMPANY | COLUMBUS | OH |
| GREAT LAKES COAL MINING COMPANY | POMEROY | OH |
| Great Lakes Engineering Works Shipyard | Ashtabula | OH |
| GREAT LAKES FLOUR | CLEVELAND | OH |
| GREAT LAKES SUGAR | FREMONT | OH |
| GREAT LAKES SUGAR COMPANY | FREMONT | OH |
| GREAT NORTHERN MALL – SEARS ROEBUCK DEPARTMENT STORE | NORTH OLMSTED | OH |
| GREAT SOUTHERN HOTEL | COLUMBUS | OH |
| GREATER CLEVELAND GARDEN CTR | CLEVELAND | OH |
| Green A P Refractories of Ohio | Canton | OH |
| GREEN BALL BEARING | CLEVELAND | OH |
| Green Cross Hospital | Cuyahoga Falls | OH |
| GREEN JR HIGH SCHOOL | CANTON | OH |
| GREENFIELD WATER AND LIGHT DEPARTMENT – WATER AND LIGHT PLANT | GREENFIELD | OH |
| GREENVILLE ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | GREENVILLE | OH |
| GREER STEEL COMPANY | DOVER | OH |
| GRINNEL BUILDING | CINCINNATI | OH |
| GRINNELL CORP – PLANT #1 | WARREN | OH |
| Grinnell Corp. | Warren | OH |
| Griscom Russell Company | Massillon | OH |
| GRISCON RUSSELL COMPANY | MASSILLON | OH |
| Grizzly Mfg. Co. | Paulding | OH |
| Grizzly Nuturn | Paulding | OH |
| GROUND ROUND | CLEVELAND | OH |
| Grove City High School | Grove City | OH |
| GROVE CITY HIGH SCHOOL – HOOVER ROAD | GROVE CITY | OH |
| GROVER MUSICAL | CLEVELAND | OH |
| Guardian Glass | Millbury | OH |
| GULF CHEMICAL & METALLURGICAL CORP. | IRONTON | OH |
| GULF OIL | CLEVELAND | OH |
| GULF OIL | HOOVEN | OH |
| GULF OIL | CLEVES | OH |
| GULF OIL COMPANY | CINCINNATI | OH |
| GULF OIL COMPANY | HOOVEN | OH |
| GULF OIL COMPANY | TOLEDO | OH |
| GULF OIL CORP – TOLEDO REFINERY | TOLEDO | OH |
| GULF OIL CORP. | TOLEDO | OH |
| GULF OIL CORPORATION | TOLEDO | OH |
| Gulf Oil Corporation | Cleves | OH |
| Gulf Oil Corporation | Hooven | OH |
| Gulf Oil Refinery | Toledo | OH |
| Gulf Oil Refinery | Cincinnati | OH |
| Gulf Oil Refinery | Hooven | OH |
| GULF OIL REFINING CO | TOLEDO | OH |
| GULF REFINERY | TOLEDO | OH |
| GULF REFINERY | HOOVEN | OH |
| Gulf Refining Company | Clenes | OH |
| GULF REFINING COMPANY | CLEVES | OH |
| GULF REFINING COMPANY | TOLEDO | OH |
| Gummed Products Company | Troy | OH |
| GUND BREWING COMPANY | CLEVELAND | OH |
| GUNNING REFR. S. | WEBSTER | OH |
| GWINN MILLING COMPANY | COLUMBUS | OH |
| GWYNNE BUILDING | CINCINNATI | OH |
| H H MEYER REFRIGERATION PACKING COMPANY – 2115 PARTRIDGE PLACE | CINCINNATI | OH |
| H J Heinz Company | Fremont | OH |
| H. & M. METAL | CUYAHOGA FALLS | OH |
| H. & S. POGUE COMPANY | CINCINNATI | OH |
| H. & S. POGUE DEPTARTMENT STORE, KENWOOD PLAZA | CINCINNATI | OH |
| H. A. PRESTON SCHOOL | CANTON | OH |
| H. J. HEINZ CO | BOWLING GREEN | OH |
| H. J. HEINZ CO – BOILER HOUSE | BOWLING GREEN | OH |
| H. J. HEINZ COMPANY | FREMONT | OH |
| H. J. HEINZ COMPANY | BOWLING GREEN | OH |
| H. MILLER | CINCINNATI | OH |
| H.B. CAMP COMPANY | AKRON | OH |
| H.B. CAMP COMPANY | GREENTOWN | OH |
| H.B. CAMP SEWER PIPE COMPANY | GREENTOWN | OH |
| H.B. MILWINE & COMPANY | TOLEDO | OH |
| H.D. BEACH COMPANY | COSHOCTON | OH |
| H.H. MEYER PACKING COMPANY | CINCINNATI | OH |
| H.H. MEYERS PACKING COMPANY | CINCINNATI | OH |
| H.H. WILLIAMS AND COMPANY | WAUSEON | OH |
| H.J. HEINZ COMPANY | FREMONT | OH |
| H.J. HEINZ COMPANY | BOWLING GREEN | OH |
| H.J. HEINZ COMPANY, MAIN PLANT | FREMONT | OH |
| H.J. HEINZ COMPANY,ENGINEERING DEPARTMENT | FREMONT | OH |
| H.J. OSTERFIELD CO | DAYTON | OH |
| H.K. FERGUSON | AVON | OH |
| H.K. FURGUSON CO | PAINESVILLE | OH |
| H.M. CRITES AND COMPANY | CIRCLEVILLE | OH |
| H.M. CRITES MILLING COMPANY | CIRCLEVILLE | OH |
| HADFIELD PENFIELD STEEL COMPANY | BUCYRUS | OH |
| HAGAR STRAWBOARD AND PAPER COMPANY | CEDARVILLE | OH |
| HAGAR STRAWBOARD AND PAPER COMPANY | XENIA | OH |
| HAL LYNN | CLEVELAND | OH |
| HALEX CORP. | CLEVELAND | OH |
| HALEX DIVISION | BEDFORD | OH |
| HALL OF JUSTICE BUILDING | COLUMBUS | OH |
| HALLMARK CARDS | CINCINNATI | OH |
| HALORA CORP. | CLEVELAND | OH |
| HALTENBACK AND STEPHENS | CLEVELAND | OH |
| HAMILTON | HAMILTON | OH |
| HAMILTON CITY* | HAMILTON | OH |
| HAMILTON COKE & IRON COMPANY | HAMILTON | OH |
| HAMILTON COMPANY TRAINING | CINCINNATI | OH |
| HAMILTON COUNTY COMMISSIONERS | CINCINNATI | OH |
| HAMILTON COUNTY COURT HOUSE | CINCINNATI | OH |
| HAMILTON COUNTY COURTHOUSE – MAIN STREET | HAMILTON | OH |
| HAMILTON COUNTY HOME | CINCINNATI | OH |
| Hamilton Department Of Public Works | Hamilton | OH |
| HAMILTON FURNACE COMPANY | HAMILTON | OH |
| HAMILTON ICE AND COLD STORAGE COMPANY | HAMILTON | OH |
| HAMILTON MILK COMPANY | HAMILTON | OH |
| HAMILTON OTTO COKE COMPANY | HAMILTON | OH |
| HAMILTON STEEL & IRON COMPANY | HAMILTON | OH |
| HAMILTON STORES | HAMILTON | OH |
| Hammond Acoustical Company | Canton | OH |
| HANGING ROCK IRON COMPANY | HANGING ROCK | OH |
| Hankins Container Co | Cleveland | OH |
| Hanna Coal Company | Piney Fork | OH |
| HARBISON – WALKER | WINDHAM | OH |
| Harbison Walker Refactories Co. | Portsmouth | OH |
| HARBISON WALKER REFRACTORIES | GARRETTSVILLE | OH |
| HARBISON WALKER REFRACTORIES | SCIOTO | OH |
| HARBISON WALKER REFRACTORIES – CLAY MILL WORKS | SCIOTO FURNACE | OH |
| Harbison-Walker | Portsmouth | OH |
| HARDESTY MILLING COMPANY | CANAL DOVER | OH |
| HARDING JONES PAPER CO | EXCELLO | OH |
| HARKNESS & COWING COMPANY | CINCINNATI | OH |
| HARKNESS & COWING COMPANY | ST. BERNARD | OH |
| HARRING-HALL-MARVIN COMPANY | HAMILTON | OH |
| Harrison Manufacturing | Birmingham | OH |
| HARRISON RADIATOR | DAYTON | OH |
| HARRISON RADIATOR | MORAINE | OH |
| HARRISON RADIATOR DIV, GMC; SOUTH PLANT | DAYTON | OH |
| HARRISON SCHOOL | CANTON | OH |
| HARROP CERAMIC SERVICE COMPANY | COLUMBUS | OH |
| Harrop Ceramic Services Co. | Columbus | OH |
| Harrup Ceramics Service | Columbus | OH |
| Harshaw Chemical | Elyria | OH |
| HARSHAW CHEMICAL | CLEVELAND | OH |
| HARSHAW CHEMICAL | SOLON | OH |
| HARSHAW CHEMICAL CO | CLEVELAND | OH |
| HARSHAW CHEMICAL CO SILVER CATALYST DEPT | CLEVELAND | OH |
| HARSHAW CHEMICAL CO. – SILVER CATALYST DEPT. | CLEVELAND | OH |
| HARSHAW CHEMICAL COMPANY | ELYRIA | OH |
| Harshaw Chemical Company | Cleveland | OH |
| HARSHAW CHEMICAL PLANT | CLEVELAND | OH |
| HARSHAW, FULLER & GOODWIN COMPANY | CLEVELAND | OH |
| HARSHAW, FULLER & GOODWIN COMPANY | ELYRIA | OH |
| HARTER MILLING COMPANY | FOSTORIA | OH |
| HARTFORD JUNIOR HIGH SCHOOL | CANTON | OH |
| HARTJE BROTHERS PAPER MANUFACTURING COMPANY | TORONTO | OH |
| HARTJE BROTHERS PAPER MANUFACTURING COMPANY | STEUBENVILLE | OH |
| HARTMAN BUILDING | COLUMBUS | OH |
| HARTMAN ELECTRICAL LFG. CO. | MANSFIELD | OH |
| HARTZELL INDUSTRIES, INCORPORATED | PEQUIA | OH |
| HARTZELL INDUSTRIES, INCORPORATED | PIQUA | OH |
| HARVEY BROTHERS | CLEVELAND | OH |
| HASELTON FURNACE #4 | HASELTON | OH |
| HATFIELD ELECTRIC | LORAIN | OH |
| HAVEG INDUSTRIES INC GLAS | CLEVELAND | OH |
| HAVEG INDUSTRIES* | CLEVELAND | OH |
| HAWKEYE CHEMICAL COMPANY | CLINTON | OH |
| HAWTHORN HOSPITAL | CLEVELAND | OH |
| HAWTHORNDEN STATE HOSPITAL | MACEDONIA | OH |
| HAWTHORNDEN STATE HOSPITAL | NORTHFIELD | OH |
| HAWTHORNDEN STATE HOSPITAL – FITZWATER BRIDGE | CLEVELAND | OH |
| HAWTHORNE VALLEY CLUB | BEDFORD | OH |
| HAYDEN COMPANY | COLUMBUS | OH |
| HAYES ALBION | TIFFIN | OH |
| Heath Refining | Heath Licking County | OH |
| HEDALLOY DIE | CLEVELAND | OH |
| HEEKIN CAN CO | NORWOOD | OH |
| HEEKIN CAN COMPANY | NORWOOD | OH |
| HEEKIN CAN COMPANY | EAST NORWOOD | OH |
| HEFFNER AND COMPANY | CIRCLEVILLE | OH |
| HEFFNER MILLING COMPANY | CIRCLEVILLE | OH |
| HEINRICHS, A G | CLEVELAND | OH |
| HEINZ CO | FREMONT | OH |
| HEINZ CO. | FREMONT | OH |
| HEINZ H J CO. | BOWLING GREEN | OH |
| HELFRICH DIE CAST | CANTON | OH |
| HELFRICH DIE CAST | NORTH CANTON | OH |
| HELLENIC CULTURAL CENTER | CANTON | OH |
| HELLER TOOL COMPANY | NEW COMERSTOWN | OH |
| Hendershot | Ironton | OH |
| HENDERSHOT & SMITH, INCORPORATED | WICKLIFFE | OH |
| HENDERSHOT-SMITH | WICKLIFFE | OH |
| HENKEL OF AMERICA, INCORPORATED | CINCINNATI | OH |
| HENKES AUTO ELECTRIC | LORAIN | OH |
| Henrite Products | Ironton | OH |
| HENRY DREGERS GREENHOUSE | COLUMBIA STATION | OH |
| HENRY FURNANCE & FOUNDRY COMPANY | MEDINA | OH |
| HENRY HOLTZMAN & SON COMPANY | COLUMBUS | OH |
| HENRY J. CRANE | EAST TOLEDO | OH |
| HENRY P. THOMPSON | CINCINNATI | OH |
| HERAN COURT BEVERAGE AND ICE COMPANY | CINCINNATI | OH |
| HERANCOURT BREWING COMPANY | CINCINNATI | OH |
| Herbert Chemical Co | Cincinnati | OH |
| HERCULES ENGINES, INCORPORATED | WOOSTER | OH |
| Hercules Motor | Canton | OH |
| HERCULES MOTOR CORPORATION | CANTON | OH |
| HERRING HALL MARVIN SAFE CO. | HAMILTON | OH |
| HERRON TESTING LAB | CLEVELAND | OH |
| HESS AND CLARK | CANTON | OH |
| HESS SPRING AND AXLE COMPANY | CARTHAGE | OH |
| HEWITT BROS. SOAP CO | DAYTON | OH |
| HEWITT SOAP COMPANY | DAYTON | OH |
| HEWTT SOAP COMPANY, AMERICAN SAFETY RAZOR COMPANY | DAYTON | OH |
| HEYDEN CHEMICAL CORPORATION | IRONTON | OH |
| Higbee Company | Cleveland | OH |
| HIGHLAND VIEW HOSPITAL | CLEVELAND | OH |
| HIGHWAY PROD. | KENT | OH |
| HILL CLUTCH COMPANY | CLEVELAND | OH |
| HILL HARDWARE | FAIRPORT HARBOR | OH |
| Hill Manufacturing Company | Jackson | OH |
| HILL VIEW RETIREMENT CENTER – 28TH STREET | PORTSMOUTH | OH |
| HILLSBORO HIGH SCHOOL | HILLSBORO | OH |
| HILLSHIRE FARM & KAHN’S | CINCINNATI | OH |
| HILLSIDE JR HS | SEVEN HILLS | OH |
| HILLSIDE JR. HIGH SCHOOL – SEVEN HILLS VILLAGE | CLEVELAND | OH |
| HILLSIDE JUNIOR HIGH SCHOOL | SEVEN HILLS | OH |
| HILLSIDE JUNIOR HIGH SCHOOL | CLEVELAND | OH |
| Hilton Davis Chemical | Cincinatti | OH |
| HILTON DAVIS CHEMICAL CO | CINCINNATI | OH |
| HILTON DAVIS CHEMICAL CO. | CINCINNATI | OH |
| HILTON DAVIS CHEMICAL COMPANY | TOLEDO | OH |
| HILTON DAVIS CHEMICAL COMPANY | CINCINNATI | OH |
| HILTON DAVIS CHEMICAL COMPANY, DIVISION OF STERLING DRUG COMPANY | CINCINNATI | OH |
| HILTON INN | CINCINNATI | OH |
| HILTON-DAVIS CHEMICAL CO. | CINCINNATI | OH |
| Hilton-Davis Chemical Company | Cincinnati | OH |
| HINCKLEY GREENHOUSE | CLEVELAND | OH |
| HINDE & DAUCH | BANDUSKY | OH |
| HINDE & DAUCH PAPER COMPANY | SANDUSKY | OH |
| HINDE AND DAUCH PAPER COMPANY | CLEVELAND | OH |
| HINDE AND DAUCH PAPER COMPANY | SANDUSKY | OH |
| HINDE AND DAUCH PAPER COMPANY | DELPHOS | OH |
| HINES FLASK | CLEVELAND | OH |
| Hines Flask Co. | Cleveland | OH |
| HINKLIN AWNING CO. | MARION | OH |
| His Ministry Church | Solon | OH |
| Hoban Dominican High School Auditorium | Cleveland | OH |
| HOBART BROS CO – W PLANT X-1 STOCK ROOM | TROY | OH |
| HOBART BROS. | TROY | OH |
| HOBART MANUFACTURING COMPANY | TROY | OH |
| Hobart Manufacturing Corp. | Troy | OH |
| HOBERT CORP | TROY | OH |
| HOFFMAN BRONZE | CLEVELAND | OH |
| HOFFMAN-LA ROCHE | CAMBRIDGE | OH |
| HOGE LUMBER AND BRUSH COMPANY | NEW KNOXVILLE | OH |
| HOGE LUMBER COMPANY | NEW KNOXVILLE | OH |
| HOGE LUMBER MILL | NEW KNOXVILLE | OH |
| HOLLAND BREAD COMPANY | DAYTON | OH |
| Holland Furnace | Ironton | OH |
| HOLLENDEN HOTEL | CLEVELAND | OH |
| HOLLYWOOD BRANDS | MALVERN | OH |
| HOLLYWOOD BRANDS, INCORPORATED | MALVERN | OH |
| HOLMES COUNTY HOME | MILLERSBURG | OH |
| HOLMES EAST HIGH SCHOOL | CANTON | OH |
| HOLMES HOSPITAL | EVENDALE | OH |
| HOLSMAN | CLEVELAND | OH |
| Holy Angels School | Signey | OH |
| HOLY FAMILY CATHOLIC CHURCH | PARMA | OH |
| HOME FOR THE AGED | MOUNT HEALTHY | OH |
| HOME INSULATION COMPANY, 999 TRUMBULL AVE. | YOUNGSTOWN | OH |
| HOME INSULATION, 2136 W. FEDERAL ST. | YOUNGSTOWN | OH |
| HOME LIGHTING, POWER, & HEATING COMPANY | SPRINGFIELD | OH |
| HOME TELEPHONE CO. | MIDDLETOWN | OH |
| HOOKER CHEMICAL PLANT | KENTON | OH |
| HOOKER ELECTROCHEMICAL CO | KENTON | OH |
| HOOTMAN ALUMINUM FOUNDRY | BRYAN | OH |
| Hooven & Allison | Zenia | OH |
| HOOVEN & ALLISON COMPANY | XENIA | OH |
| HOOVER | CANTON | OH |
| HOOVER CO | N CANTON | OH |
| Hoover Company | N. Canton | OH |
| HOOVER COMPANY | NORTH CANTON | OH |
| HOOVER, OWENS, RENTSCHLER COMPANY | HAMILTON | OH |
| HORNELL ICE AND COLD STORAGE COMPANY | MARION | OH |
| HORSBURGH – SCOTT | CLEVELAND | OH |
| HORVITZ COMPANY | CLEVELAND | OH |
| HOSPITALITY MOTOR INN | CINCINNATI | OH |
| HOSSLER CONSTRUCTION | TIFFIN | OH |
| Hotel Cleveland Power Plant | Cleveland | OH |
| HOTEL GIBSON | CINCINNATI | OH |
| HOTEL METROPOLE | CINCINNATI | OH |
| HOUSE OF LORETTA | CANTON | OH |
| HOUSE OF PIERRE – ROUTE 747 | CINCINNATI | OH |
| HOUSTON HAY AL AND SONS | COSHOCTON | OH |
| HOWARD PAPER | URBANA | OH |
| HOWARD PAPER COMPANY | URBANA | OH |
| HOWARD PAPER MILLS | DAYTON | OH |
| Howard Papermill | Dayton | OH |
| HOWE SOUND COMPANY | CARROLLTON | OH |
| HOWE SOUND COMPANY | LARRALLTON | OH |
| Huber-Warco | Marion | OH |
| HUDEPOHL BREWING COMPANY | CINCINNATI | OH |
| HUDGEONS PRODUCTS | CLEVELAND | OH |
| HUEBNER-TOLEDO BREWERIES COMPANY | TOLEDO | OH |
| HUENEFELD COMPANY | CINCINNATI | OH |
| HUFFMAN CONKLIN COMPANY | COLUMBUS | OH |
| HUGHES AND KEENAN | MANSFIELD | OH |
| HUGHES BECHTOL INCORPORATED | MANCHESTER | OH |
| HUGHES HIGH SCHOOL – 2515 CLIFTON AVENUE | CINCINNATI | OH |
| HUGHES HOSPITAL | HAMILTON | OH |
| Hughes-Bechtol Incorporated | Dayton | OH |
| Humes Trailer | Bloomingdale | OH |
| HUNT FOODS – WILLIS DAY INDUSTRIAL PARK | PERRYSBURG | OH |
| HUNT FOODS AND INDUSTRIES | PERRYSBURG | OH |
| Hunt Products Inc | North Royalton | OH |
| HUNT WESSON FOODS INCORPORATED – WILLIS DAY INDUSTRIAL PARK | PERRYSBURG | OH |
| HUNT WESSON FOODS INCORPORATED – WILLIS DAY INDUSTRIAL PARK – PLANT #28 | PERRYSBURG | OH |
| Hunters Corp | Cincinnati | OH |
| Huntington National Bank | Columbus | OH |
| Hunts Food | Rossford | OH |
| HUNTSMEN GOODSON CHEMICAL CORP | TROY | OH |
| HUNT-WESSON FOODS | PERRYSBURG | OH |
| HUNT-WESSON FOODS, INCORPORATED, WILLIS DAY INDUSTRIAL PARK | PERRYSBURG | OH |
| HUNT-WESSON FOODS, INCORPORATED, WILLIS DAY INDUSTRIAL PARK, PLANT #28 | PERRYSBURG | OH |
| HUPP CORPORATION | CANTON | OH |
| Huron Lime Co | Huron | OH |
| HURON ROAD HOSPITAL | EAST CLEVELAND | OH |
| HUSEMAN SNACK FOOD COMPANY – 1612 MOORE STREET | CINCINNATI | OH |
| HUTTENBAUER & SONS | SHARONVILLE | OH |
| HYDE PARK BANK | CINCINNATI | OH |
| HYDRAULIC PRESSED STEEL COMPANY | CLEVELAND | OH |
| Hydro Aerobics, Inc. | Milford | OH |
| Hydro-Blast Corporation | Cleveland | OH |
| Hydro-Blast Corporation | Elyria | OH |
| Hydro-Blast Corporation | Minster Machine | OH |
| Hydro-Blast Corporation | Toledo | OH |
| Hydrocarbon Research, Inc. | Mingo Junction | OH |
| HYGIENIC DENTAL JOB – STEAM & CONDENSATE | CANTON | OH |
| HYME PLUMBING – YMCA | LANCASTER | OH |
| I R C FIBERS CO | PAINESVILLE | OH |
| I T C – BUILDING ANNEX – 132 FOOT TANK | CINCINNATI | OH |
| I. SCHUMAN | BEDFORD | OH |
| I.D. SMEAD AND COMPANY | TOLEDO | OH |
| IBM BUILDING – EAST TOWN STREET | COLUMBUS | OH |
| Ideal Milk Company | Portsmouth | OH |
| IDEAL TIRE AND RUBBER COMPANY | CLEVELAND | OH |
| IMMERMAN CRAFTS | SOLON | OH |
| IMMERMAN CREATIVE | SOLON | OH |
| IMMERMAN ENAMELS | SOLON | OH |
| IMPERIAL CLEVITE | CLEVELAND | OH |
| INCINERATOR PLANT | CINCINNATI | OH |
| INCINO REFRACTORIES CO. | EAST CLEVELAND | OH |
| INDEPENDENT ICE COMPANY | CLEVELAND | OH |
| INDEPENDENT TOWEL SUPPLY | CLEVELAND | OH |
| INDIA TIRE AND RUBBER COMPANY | MOGADORE | OH |
| INDIAN REFINING COMPANY | CINCINNATI | OH |
| Indiana Kentucky Electric Corp. | Piketown | OH |
| INDIANA & MICHIGAN POWER COMPANY – TANNERS CREEK PLANT | Lawrenceburg | OH |
| INDIANA COLUMBUS AND EASTERN TRACTION COMPANY | HEBRON | OH |
| INDIANAPOLIS COLUMBUS AND SOUTHERN TRACTION COMPANY | COLUMBUS | OH |
| INDIANOLA HEATING & LIGHTING COMPANY – POWER PLANT | COLUMBUS | OH |
| INDIANOLA ICE COMPANY | COLUMBUS | OH |
| INDUSTRIAL ALUMINUM | ELYRIA | OH |
| INDUSTRIAL ARTCRAFT | AKRON | OH |
| INDUSTRIAL FABRICATING JOB | CANTON | OH |
| INDUSTRIAL FIBRE CORPORATION | CLEVELAND | OH |
| INDUSTRIAL FURNACE SUPPLY CO | COLUMBUS | OH |
| INDUSTRIAL OVENS, INC. | CLEVELAND | OH |
| INDUSTRIAL POWER PIPING | BEREA | OH |
| Industrial Rayon | Cleveland | OH |
| Industrial Rayon Company | Painesville | OH |
| INDUSTRIAL RAYON CORP | PAINESVILLE | OH |
| Industrial Rayon Corp. | Painesville | OH |
| INDUSTRIAL RAYON CORPORATION | PAINESVILLE | OH |
| INDUSTRIAL RAYON CORPORATION | CLEVELAND | OH |
| INDUSTRIAL RAYON CORPORATION (a/k/a IRC Fibres Co.) | PAINESVILLE | OH |
| INDUSTRIAL SERVICES & ENG | ORVILLE | OH |
| INEOS | ADDYSTON | OH |
| INEOS | LIMA | OH |
| INGALLS BUILDING | CINCINNATI | OH |
| INGERSOLL-HUMPHRIES | MANSFIELD | OH |
| Inland | Dayton | OH |
| INLAND DIVISION OF GENERAL MOTORS CORPORATION | DAYTON | OH |
| INLAND MANUFACTURING COMPANY | DAYTON | OH |
| INLAND MANUFACTURING DIVISION OF GENERAL MOTORS CORPORATION | DAYTON | OH |
| Inland Mfg. | Dayton | OH |
| Inland Refractories Co | Cleveland | OH |
| Inland Steel | Columbus | OH |
| INMONT DIVISION, BASF | GREENVILLE | OH |
| INSTITUTE FOR FEEBLE MINDED | ORIENT | OH |
| INSTITUTION FOR FEEBLE MINDED | COLUMBUS | OH |
| INSTITUTION FOR FEEBLE MINDED | ORIENT | OH |
| INSTITUTION FOR FEEBLE MINDED YOUTH | COLUMBUS | OH |
| INSTITUTION FOR FEEBLE MINDED YOUTH | ORIENT | OH |
| INSTITUTIONAL INDUSTRIES | CINCINNATI | OH |
| Insulation & Contracting & Supply | Milford | OH |
| INSULATION CONTRACTING & SUPPLY CO. | CINCINNATI | OH |
| Insulation Services Company | Aberdeen | OH |
| Insulation Services Inc. | Barnswell | OH |
| Insulation Services Inc. | Haverhill | OH |
| Insulco Inc | Lima | OH |
| Insulco Inc. | Lima | OH |
| INSULCO, INC. | LIMA | OH |
| INTERCON SYSTEMS | CLEVELAND | OH |
| INTERLAKE | BEVERLY | OH |
| Interlake Iron (steel) | Toledo | OH |
| INTERLAKE IRON CORPORATION | TOLEDO | OH |
| INTERLAKE IRON CORPORATION | BEVERLY | OH |
| Interlake Steamship | Cleveland | OH |
| INTERLAKE STEEL | TOLEDO | OH |
| Interlake Steel Corp. | Toledo | OH |
| INTERLAKE STEEL CORPORATION | TOLEDO | OH |
| INTERNATIONAL BREWERIES, INCORPORATED | FINDLAY | OH |
| INTERNATIONAL HARVESTER COMPANY | AKRON | OH |
| INTERNATIONAL HARVESTER COMPANY | SPRINGFIELD | OH |
| INTERNATIONAL PAPER COMPANY | WOOSTER | OH |
| INTERNATIONAL PAPER COMPANY | DAYTON | OH |
| INTERNATIONAL PAPER COMPANY, CONTAINER DIVISION | WOOSTER | OH |
| INTERNATIONAL SALT COMPANY | CLEVELAND | OH |
| INTERSTATE BAKERIES | CINCINNATI | OH |
| INTERSTATE ENGINEERING COMPANY | CLEVELAND | OH |
| INTERSTATE ENGINEERING COMPANY | BEDFORD | OH |
| INTERSTATE FOLDING BOX COMPANY | MIAMISBURG | OH |
| INVESTMENT CASTING | WATERVILLE | OH |
| IRC FIBERS | PAINESVILLE | OH |
| IRC Fibers Company | Painesville | OH |
| IRNET | HANNIBAL | OH |
| IRONTON COKE | IRONTON | OH |
| Ironton Coke Corporation | Ironton | OH |
| IRONTON COKE CORPORATION (a/k/a Allied Chemical – Semet Solvay Co.) | IRONTON | OH |
| Ironton Fire Brick | Ironton | OH |
| IRONTON HIGH SCHOOL | IRONTON | OH |
| Ironton Iron | Ironton | OH |
| IRONTON METROPOLITAN HOUSING AUTHORITY | IRONTON | OH |
| IRONTON PORT CEMENT COMPANY | IRONTON | OH |
| IRWIN SCHOOL | CANTON | OH |
| Irwin Steel Fabricators | Canton | OH |
| ISAAC HARTER COMPANY | FOSTORIA | OH |
| ISAAC HARTER COMPANY | TOLEDO | OH |
| ISHPEMING | LORAIN | OH |
| ITT Grinnell | Piketon | OH |
| IVORYDALE FACTORY – FOOD PRODUCTS STOREROOM | CINCINNATI | OH |
| J & D WELDING | CLEVELAND | OH |
| J & L | CLEVELAND | OH |
| J & L | WARREN | OH |
| J & L | YOUNGSTOWN | OH |
| J & L – LTV STEEL | Campbell | OH |
| J & L – LTV STEEL | Canton | OH |
| J & L – LTV STEEL | Cleveland | OH |
| J & L – LTV STEEL | Mahoning | OH |
| J & L – LTV STEEL | Massillon | OH |
| J & L – LTV STEEL | Niles | OH |
| J & L – LTV STEEL | Struthers | OH |
| J & L – LTV STEEL | Warren | OH |
| J & L – LTV STEEL | Youngstown | OH |
| J & L Steel | Cleveland | OH |
| J & L Steel Co | Cleveland | OH |
| J & L STEEL CORP | LOUISVILLE | OH |
| J & L STEEL CORP – CLEVELAND WORKS | CLEVELAND | OH |
| J & L STEEL CORP, FUEL INJECTION FURNACES | CLEVELAND | OH |
| J & L STEEL CORPORATION – FUEL OIL INJECTION FURNACES | CLEVELAND | OH |
| J & R MOTEL GOLF COURSE | WILMINGTON | OH |
| J E UPSON | CLEVELAND | OH |
| J M SMUCKER CO | CANTON | OH |
| J M STUART | ABERDEEN | OHIO |
| J&L STEEL | YOUNGSTOWN | OH |
| J&L STEEL | CLEVELAND | OH |
| J&L STEEL | LOUISVILLE | OH |
| J&L STEEL | CANTON | OH |
| J&L STEEL ATTN JOHN E P RUNTY PIPE SHOP | CLEVELAND | OH |
| J&L STEEL C/O SUBURBAN HTG | CLEVELAND | OH |
| J&L STEEL CO CLEVELAND WORKS | CLEVELAND | OH |
| J&L STEEL CORP | CLEVELAND | OH |
| J. & L. STEEL CORPORATION, FUEL OIL INJECTION FURNACES | CLEVELAND | OH |
| J. BURTON AYERS | LORAIN | OH |
| J. C. PENNEY | CANTON | OH |
| J. KIRSCHENBAUM | CLEVELAND | OH |
| J. SHILLITO | CINCINNATI | OH |
| J. SMITH’S SON’S BREWING COMPANY | YOUNGSTOWN | OH |
| J.A. EDISON | PIQUA | OH |
| J.A. FAY AND COMPANY | CINCINNATI | OH |
| J.A. FAY AND EGAN COMPANY | CINCINNATI | OH |
| J.B. CAMPBELL MANUFACTURING COMPANY | CARTHAGE | OH |
| J.B. JONES AND COMPANY | STEUBENVILLE | OH |
| J.B. SCHAAF | CINCINNATI | OH |
| J.C. GROENDYKE COMPANY | MIAMISBURG | OH |
| J.C. HEINTZ | CLEVELAND | OH |
| J.C. HEINTZ CO. | AKRON | OH |
| J.C. PENNEY BUILDING | LIMA | OH |
| J.D. Fowler | Youngstown | OH |
| J.F. RANDALL | CLEVELAND | OH |
| J.F. WILLIAMS MILLING COMPANY | COLUMBUS | OH |
| J.G. MADDEN & SONS – EAST PALESTINE POWER PLANT | EAST PALESTINE | OH |
| J.H. DAY COMPANY | CINCINNATI | OH |
| J.H. MCLAIN COMPANY | CANTON | OH |
| J.H. TANGEMAN AND COMPANY | LOCKLAND | OH |
| J.J. Foundry | Ironton | OH |
| J.L. BALLINGER | CINCINNATI | OH |
| J.M. COUSINS | MANSFIELD | OH |
| J.M. SMUCKER APPLE BUTTER COMPANY | ORRVILLE | OH |
| J.M. WALL CO. | CLEVELAND | OH |
| J.P. WOLF | DAYTON | OH |
| J.W. GEOPFERT | AKRON | OH |
| JACK HEINTZ, INCORPORATED | BEDFORD | OH |
| JACK HERB FLORIST | CINCINNATI | OH |
| JACK HIGGINS | TWINSBURG | OH |
| JACKSON ELEM. SCHOOL, SECT. 9 | MAUMEE | OH |
| JACKSON ELEM. SCHOOL, SECT. 9 – WASHINGTON TOWNSHIP | MAUMEE | OH |
| Jackson Iron & Steel | Jackson | OH |
| JACKSON IRON AND STEEL COMPANY | JACKSON | OH |
| JACKSON PIKE WASTEWATER TREATMENT PLANT | COLUMBUS | OH |
| JAEGER MACHINE COMPANY PLANT | COLUMBUS | OH |
| JAILE COMPANY | BOSTON | OH |
| JAMES B. CLOW AND SONS | NEWCOMERSTOWN | OH |
| JAMES C. HEINTZ | AKRON | OH |
| JAMES C. OREN | DAYTON | OH |
| JAMES CAMPBELL SMITH, INCORPORATED | WILLOUGHBY | OH |
| JAMES E. THOMAS | NEWARK | OH |
| JAMES LEFFEL AND COMPANY | SPRINGFIELD | OH |
| JANITROL AIRCRAFT DIVISION | COLUMBUS | OH |
| JARECKI CHEMICAL COMPANY | ST. BERNARD | OH |
| Jarvis Division | Toledo | OH |
| JAS LEFFEL AND COMPANY | SPRINGFIELD | OH |
| JAY L ANGEL INC | TOLEDO | OH |
| JAY L ANGEL INC. | TOLEDO | OH |
| J-D WELDING | CLEVELAND | OH |
| Jeep Corp. | Toledo | OH |
| JEEP PLANT | TOLEDO | OH |
| JEFFEREY MANUFACTURING | COLUMBUS | OH |
| JEFFERSON – SMURFIT CORP | MIDDLETOWN | OH |
| Jefferson City Burial Vault Works | Steubenville | OH |
| JEFFERSON IRON WORKS | STEUBENVILLE | OH |
| Jefferson School | Springfield | OH |
| JEFFERSON SMURFIT CORPORATION | CIRCLEVILLE | OH |
| JEFFERSON SMURFIT CORPORATION | MIDDLETON | OH |
| JEFFREY MANUFACTURING COMPANY | COLUMBUS | OH |
| JEWETT CAR COMPANY | NEWARK | OH |
| JEWISH HOSPITAL | CINCINNATI | OH |
| Jim Clay Refractory | Sebring | OH |
| JIM CURSEY | CLEVELAND | OH |
| JOHN A. STEWART ELECTRIC COMPANY – POWER PLANT | CINCINNATI | OH |
| JOHN B. SHEPLER | TOLEDO | OH |
| JOHN C. BOEHM | CLEVELAND | OH |
| JOHN CARROLL UNIV | UNIVERSITY HEIGHTS | OH |
| JOHN DISCH | LAKEWOOD | OH |
| JOHN KLERI | CLEVELAND | OH |
| John Knapp Sons Foundry | Akron | OH |
| JOHN REINCHILD CHILD DAY NURSERY | REYNOLDSBURG | OH |
| JOHN T. HUTCHINSON | CLEVELAND | OH |
| JOHN WESLEY METHODIST CHURCH | FOREST PARK | OH |
| JOHNS – MANVILLE | DEFIANCE | OH |
| JOHNS – MANVILLE | ALLIANCE | OH |
| JOHNS – MANVILLE | WATERVILLE | OH |
| Johns Manville | Defiance | OH |
| Johns Manville | Columbus | OH |
| Johns Manville Product Corporation | Cleveland | OH |
| JOHNSON COMPANY | CLEVELAND | OH |
| JOHNSTON AND JENNINGS COMPANY | CLEVELAND | OH |
| JONATHAN ALDER HIGH SCHOOL | PLAIN CITY | OH |
| JONATHAN CLARK AND SONS COMPANY | COLUMBUS | OH |
| JONES & LAUGHLIN (J&L) STEEL | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL CO. | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL COMPANY | CLEVELAND | OH |
| Jones & Laughlin Steel Company (N/K/A LTV Steel) | Cleveland | OH |
| Jones & Laughlin Steel Company (N/K/A LTV Steel) | Louisville | OH |
| JONES & LAUGHLIN STEEL CORP – OTIS PLNT (a/k/a Otis Steel) | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL CORP. | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL CORP; CLEVELAND WORKS | CLEVELAND | OH |
| JONES & LAUGHLIN STEEL CORPORATION | LOUISVILLE | OH |
| Jones & Laughlin Steel/LTV Steel | Cleveland | OH |
| JONES AND LAUGHLIN | YOUNGSTOWN | OH |
| JONES AND LAUGHLIN STEEL COMPANY | CLEVELAND | OH |
| JONES AND LAUGHLIN STEEL COMPANY | STRUTHERS | OH |
| JONES AND LAUGHLIN STEEL COMPANY | CANTON | OH |
| JONES AND LAUGHLIN STEEL COMPANY, STAINLESS STEEL DIVISION | LOUISVILLE | OH |
| JONES AND LAUGHLIN STEEL STAINLESS STEEL DIVISION | LOUISVILLE | OH |
| JONES BROTHERS ELECTRIC COMPANY – POWER PLANT | CINCINNATI | OH |
| JORDAN MILLS, INCORPORATED | COLUMBUS | OH |
| JORDAN WELDING | CLEVELAND | OH |
| JOS. J. GEST, MIAMI OIL AND SOAP WORKS | CINCINNATI | OH |
| JOSEPH & FEISS CO | CLEVELAND | OH |
| JOSEPH & FEISS COMPANY | CLEVELAND | OH |
| JOSEPH CAMPBELL CO | NAPOLEON | OH |
| JOSEPH DYSON AND SONS | CLEVELAND | OH |
| JOY MANUFACTURING | NEW PHILADELPHIA | OH |
| JULIAN AND KOKINGE COMPANY | CINCINNATI | OH |
| JUNCTION IRON AND STEEL COMPANY | MINGO JUNCTION | OH |
| JUNG BREWING COMPANY | CINCINNATI | OH |
| JUNK YARD | COLUMBUS | OH |
| KAHN`S OLD PORK BONING ROOM | CINCINNATI | OH |
| KAHN’S | CINCINNATI | OH |
| KAHN’S & CO | CINCINNATI | OH |
| KAHNS LIVERSHOP DRAIN – 3241 SPRING GROVE | CINCINNATI | OH |
| KAIGHIN AND HUGHES, INC. | TOLEDO | OH |
| KAISER | HEATH | OH |
| KAISER | NEWARK | OH |
| KAISER AGRICULTURE CHEMICAL COMPANY | CINCINNATI | OH |
| KAISER AGRICULTURE CHEMICAL COMPANY | NORTH BEND | OH |
| KAISER AGRICULTURE CHEMICAL COMPANY – BROWER ROAD | NORTH BEND | OH |
| Kaiser Alum & Chem Corp | Newark | OH |
| KAISER ALUMINUM | HEATH | OH |
| Kaiser Aluminum & Chemical | Newark | OH |
| KAISER ALUMINUM & CHEMICAL CORP | NEWARK/HEATH | OH |
| KAISER ALUMINUM AND CHEMICAL CORPORATION | NEWARK | OH |
| KAISER JEEP CORPORATION | TOLEDO | OH |
| KAISER REFRACTORIES | COLUMBIANA | OH |
| KAISER REFRACTORIES | TOLEDO | OH |
| KAISER STEEL | NEWARK | OH |
| KAL KAN FOODS, INCORPORATED | COLUMBUS | OH |
| KAL KAN PET CARE | COLUMBUS | OH |
| Kalman Floor Covering | Chillicothe | OH |
| Kalso-Wagner-Frigidaire | Moraline City | OH |
| KALTENBACH AND GRIESS | CLEVELAND | OH |
| KANAWHA MICHIGAN RAILWAY COMPANY | HOBSON | OH |
| KAO JERGENS | CINCINNATI | OH |
| KASPER FOUNDRY | ELYRIA | OH |
| KASPER FOUNDRY COMPANY | ELYRIA | OH |
| KAUFMAN CO LARRY L | TOLEDO | OH |
| KAUL CLAY COMPANY | TORONTO | OH |
| KAY LEE CONSTR COMPANY | COLUMBUS | OH |
| KEAGLER BRICK CO | STEUBENVILLE | OH |
| KEAGLER BRICK CO – 1000 STANTON BLDG | STEUBENVILLE | OH |
| KEAGLER BRICK CO – OHIO EDISON CO – TORONTO PLT | TORONTO | OH |
| KEAGLER BRICK CO – WAREHOUSE | STEUBENVILLE | OH |
| Keagler Brick Company | Stubenville | OH |
| Keagler Brick Company | Toronto | OH |
| KEEBLER BISCUIT COMPANY | CINCINNATI | OH |
| KEEBLER COMPANY, GEORGE JONES | MARIEMONT | OH |
| KEEBLER COMPANY, GEORGE JONES | FAIRFAX | OH |
| Keene Corporation | Cincinnati | OH |
| Keene Insulating & Contracting | Cincinnati | OH |
| KEEVER STARCH COMPANY | SOUTH COLUMBUS | OH |
| KELLEY STEEL EREC. | BEDFORD | OH |
| KELLY NAIL AND IRON COMPANY | IRONTON | OH |
| KELLY SPRINGFIELD ROAD ROLLER COMPANY | SPRINGFIELD | OH |
| KELLY SPRINGFIELD TIRE AND RUBBER COMPANY | AKRON | OH |
| KELLY SPRINGFIELD TIRE COMPANY | AKRON | OH |
| KELSEY-HAYES | MOUNT VERNON | OH |
| Kelso Wagner Company | Dayton | OH |
| KEMET COMPANY | CLEVELAND | OH |
| KEMET CORPORATION | CLEVELAND | OH |
| KEMET DEPT – LINDE COMPANY | CLEVELAND | OH |
| KEMET DEPT LINDE COMPANY | CLEVELAND | OH |
| KEMMONS WILSON #3 | CINCINNATI | OH |
| KENNAMETAL CO. | WILLOUGHBY | OH |
| KENNER PRODUCTS | CINCINNATI | OH |
| KENT PRODUCE COMPANY | KENT | OH |
| KENT STATE NORMAL SCHOOL | KENT | OH |
| KENT STATE U | KENT | OH |
| KENT STATE UNIVERSITY | CANTON | OH |
| KENT STATE UNIVERSITY | KENT | OH |
| KENT STATE UNIVERSITY – DORM HEATING | CANTON | OH |
| KENT STATE UNIVERSITY – LAKE & OLSON HALLS | CANTON | OH |
| KENT STATE UNIVERSITY – MARRIED STUDENT DORM | CANTON | OH |
| KENT STATE UNIVERSITY – MARRIED STUDENTS DORM | KENT | OH |
| KENT STATE UNIVERSITY – NEW B DORMITORY | KENT | OH |
| KENT STATE UNIVERSITY – ROCKWELL LIBRARY – PORTAGE COUNTY | KENT | OH |
| KENT STATE UNIVERSITY – TERRACE DRIVE HEATING PLANT | KENT | OH |
| KENT STATE UNIVERSITY – UTILITIES TUNNEL – PORTAGE COUNTY | KENT | OH |
| KENT STATE UNIVERSITY – WOMENS DORMITORY A | KENT | OH |
| KENT STATE UNIVERSITY, HEATING PLANT | KENT | OH |
| KENT STATE UNIVERSITY, ROCKWELL LIBRARY, PORTAGE COUNTY | KENT | OH |
| KENT UNIVERSITY, APPLIED SCIENCE & FINE ARTS | KENT | OH |
| KENT UNIVERSITY, STUDENT BUILDING | KENT | OH |
| KESSLER COMPANY | CLEVELAND | OH |
| KESSLER COMPANY | BROOKLYN STATION | OH |
| KETTERING MEDICAL CENTER | KETTERING | OH |
| KETTERING MEDICAL CENTER | DAYTON | OH |
| KIELCO | ROCKY RIVER | OH |
| KIFER TOOL | CLEVELAND | OH |
| KILBOURNE AND JACOBS MANUFACTURING COMPANY | COLUMBUS | OH |
| KILLEN | MANCHESTER | OHIO |
| KILLEN – STATION | LEWIS CENTER | OHIO |
| KILLIAN MANUFACTURING COMPANY | AKRON | OH |
| Kimball Glass Company | Toledo | OH |
| KIMBERLY CLARK CORPORATION | WEST CARROLLTON | OH |
| KIMBERLY-CLARK CORPORATION | CARROLLTON | OH |
| Kimble Glass | South Point | OH |
| Kimble Glass | Columbus | OH |
| KINDT – COLLINS | CLEVELAND | OH |
| KING KWIK – 9380 KENWOOD ROAD | CINCINNATI | OH |
| KINGS MILLS | WARREN COUNTY | OH |
| Kinnear Doors Corporation | Columbus | OH |
| Kirk & Blum Mfg Co | Cincinnati | OH |
| KIRKLAND AVE. PUMPING STATION | CLEVELAND | OH |
| KIRKWOOD CARBON | CLEVELAND | OH |
| KIRKWOOD INDUSTRIES | CLEVELAND | OH |
| KIRTLAND HIGH SCHOOL | KIRTLAND | OH |
| KIRTLAND PUMPING STATION | CLEVELAND | OH |
| KLAUSNER COOPERAGE COMPANY | CUYAHOGA HEIGHTS | OH |
| KLAUSNER COOPERAGE COMPANY | CLEVELAND | OH |
| Klorer Willhardt | Rossford | OH |
| KNIGHT TIRE AND RUBBER COMPANY | CANTON | OH |
| Kobelco Stewart Bolling, Incorporated | Cleveland | OH |
| Koblintz Plumbing | Cleveland | OH |
| KODAK | CINCINNATI | OH |
| KODEL RADIO CORPORATION | CINCINNATI | OH |
| KOHLMEYER | LORAIN | OH |
| KOLLER BROS. | CLEVELAND | OH |
| Koneta Rubber Company | Wapakoneta | OH |
| KOPPERS CO., INC. | YOUNGSTOWN | OH |
| KOPPERS CO., INC. | HAMILTON | OH |
| KOPPERS CO., INC. | WARREN | OH |
| KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | HAMILTON | OH |
| KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | WARREN | OH |
| KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | YOUNGSTOWN | OH |
| KOPPERS COMPANY, INCORPORATED, WOOD PRESERVING DIVISION | ORRVILLE | OH |
| KORDEX COMPANY | MARIETTA | OH |
| Kottler Metal | Cleveland | OH |
| KOVATCH CASTINGS | AKRON | OH |
| KRAMIG FOAMGLASS – 323 SOUTH WAYNE AVENUE | CINCINNATI | OH |
| KRANTZ BREWING COMPANY | FINDLAY | OH |
| KRAUTH AND BENNINGHOFEN | MIDDLETOWN | OH |
| KREBS CALKINS COMPANY – ASHLAND HIGH SCHOOL | ASHLAND | OH |
| KRELL FRENCH PIANO COMPANY | SPRINGFIELD | OH |
| KRIPPENDORF AND DITTMAN | CINCINNATI | OH |
| KROCHLER MFG. CO | CLEVELAND | OH |
| KROGER BAKERY | SOLON | OH |
| KROGER CANDY | CINCINNATI | OH |
| KROGER CANDY PLANT – 1240 STATE AVENUE | CINCINNATI | OH |
| KROGER CANDY PLANT – 800 EAST KEMPER ROAD | CINCINNATI | OH |
| KROGER CANDY PLANT – 8TH STREET | CINCINNATI | OH |
| KROGER COMPANY | SOLON | OH |
| KROGER GROCERY & BAKING CO | DAYTON | OH |
| KROGER GROCERY AND BAKING COMPANY | CINCINNATI | OH |
| KROGER GROCERY AND BAKING COMPANY | COLUMBUS | OH |
| KROGER MEAT PLANT – 801 EAST KEMPER ROAD | SPRINGDALE | OH |
| KROGER MEATS | CINCINNATI | OH |
| KROGER MEATS – POWERHOUSE | CINCINNATI | OH |
| KROGER WAREHOUSE | COLUMBUS | OH |
| KROGER-SUPER STORE – STRINGTOWN ROAD | COLUMBUS | OH |
| KUEMPEL COMPANY | COLUMBUS | OH |
| KUEMPEL COMPANY – 5240 LESTER ROAD | CINCINNATI | OH |
| KUEMPEL COMPANY, 5240 LESTER RD. | CINCINNATI | OH |
| KYGER CAREER | GALLIPOLIS | OH |
| Kyger Creek Power Plant | Cheshire | OH |
| Kyger Creek Power Plant | Gallipolis | OH |
| Kyger Creek Power Plant | Gallipolige | OH |
| KYKLOS BEARING INTERNATIONAL | SANDUSKY | OH |
| KYOVA Pipe | Ironton | OH |
| L & M STAGECRAFT | CLEVELAND | OH |
| L O F | ROSSFORD | OH |
| L O F – CREDIT UNION BUILDING – EAST BROADWAY & OAKDALE | TOLEDO | OH |
| L O F – PLANT #6 | ROSSFORD | OH |
| L. HOSTER BREWING COMPANY | COLUMBUS | OH |
| L. PITSCHMANN | INDEPENDENCE | OH |
| L. SCHREIBER AND SONS COMPANY | NORWOOD | OH |
| L.B. LOCKWOOD COMPANY | CLEVELAND | OH |
| L.C. AND W.L. IRON COMPANY | PIQUA | OH |
| L.O.F. | ROSSFORD | OH |
| L.O.F., CREDIT UNION BUILDING, EAST BROADWAY & OAKDALE | TOLEDO | OH |
| L.O.F., PLANT #6 | ROSSFORD | OH |
| L.S. AND M.S. RAILWAY COMPANY, LAKE SHORE AND MICHIGAN SOUTHERN RAILROAD COMPANY | CLEVELAND | OH |
| LA BELLE IRON WORKS | STEUBENVILLE | OH |
| LA BELLE WORKS | DOVER | OH |
| LA CHOY FOOD PRODUCTS | ARCHBOLD | OH |
| LA CHOY FOOD PRODUCTS COMPANY | ARCHBOLD | OH |
| La Place | Beachwood | OH |
| Laborers Union | Portsmouth | OH |
| LACASHIRE | LORAIN | OH |
| LADY OF LOURDES | CLEVELAND | OH |
| LAGONDA MANUFACTURING COMPANY | SPRINGFIELD | OH |
| Lagonds School | Springfield | OH |
| LAIDLAW-DUNN-GORDON COMPANY | ELMWOOD PLACE | OH |
| LAKE CITY VOCATIONAL SCHOOL | CLEVELAND | OH |
| LAKE ERIE BOWLING GREEN AND NAPOLEON RAILWAY COMPANY | BOWLING GREEN | OH |
| LAKE ERIE ELECTRIC | LORAIN | OH |
| LAKE ERIE ELECTRIC | CLEVELAND | OH |
| LAKE ERIE IRON COMPANY | CLEVELAND | OH |
| LAKE ERIE PROVISION COMPANY | CLEVELAND | OH |
| LAKE ERIE SCREW | CLEVELAND | OH |
| Lake Erie Water Project | Toledo | OH |
| Lake Road Generating Station | Cleveland | OH |
| LAKE SHORE AND MICHIGAN SOUTHERN RAILWAY COMPANY | CLEVELAND | OH |
| LAKE SHORE AND MICHIGAN SOUTHERN RAILWAY COMPANY | ASHTABULA HARBOR | OH |
| LAKE SHORE AND MICHIGAN SOUTHERN RAILWAY COMPANY | COLLINWOOD | OH |
| LAKE SHORE AND MICHIGAN SOUTHERN RAILWAY COMPANY | ASHTABULA | OH |
| LAKE SHORE AND MICHIGAN SOUTHERN RAILWAY COMPANY | TOLEDO | OH |
| LAKE SHORE ELECTRIC – BEACH PARK POWER HOUSE | AVON | OH |
| LAKE SHORE ELECTRIC RAILWAY COMPANY – ELECTRIC BUILDING OFFICES | CLEVELAND | OH |
| LAKE SHORE PLANT | CLEVELAND | OH |
| LAKE SHORE POWER COMPANY | STRYKER | OH |
| LAKE TERMINAL SHOP | LORAINE | OH |
| Lakeland Community College, Nursing Education Wing | Kirtland | OH |
| Lakeside Hospital | Cleveland | OH |
| LAKEVIEW FARM | NORTH INDUSTRY | OH |
| LAKEWOOD APARTMENTS | DAYTON | OH |
| LAKEWOOD ASBESTOS & INSULATION | CLEVELAND | OH |
| LAKEWOOD CHEMICAL COMPANY – NORTH MARKET STREET | PALESTINE | OH |
| Lakewood Engineering Company | OH | |
| LAKEWOOD HIGH SCHOOL – BUNTS AND FRANKLIN BOULEVARD | LAKEWOOD | OH |
| LAMBERT TIRE AND RUBBER COMPANY | BARBERTON | OH |
| LAMSEN SESSIONS COMPANY | CLEVELAND | OH |
| LAMSON & SESSIONS CO | KENT | OH |
| LAMSON & SESSIONS COMPANY | CLEVELAND | OH |
| LAMSON & SESSIONS COMPANY | KENT | OH |
| LAMSON & SESSIONS COMPANY – HOMO OVENS | CLEVELAND | OH |
| LAMSON AND SESSIONS COMPANY | CLEVELAND | OH |
| LANCASTER GLASS | LANCASTER | OH |
| LANCASTER GLASS CORP | LANCASTER | OH |
| LANCASTER GLASS CORPORATION | LANCASTER | OH |
| LANCASTER JR HIGH SCHOOL | LANCASTER | OH |
| LANCASTER JR. HIGH SCHOOL | LANCASTER | OH |
| Landers Corp. | Toledo | OH |
| LANDERS CORPORATION | TOLEDO | OH |
| LANE AND BODLEY COMPANY | CINCINNATI | OH |
| LANG BODY COMPANY | CLEVELAND | OH |
| LANLY CO. | CLEVELAND | OH |
| LARRY L KAUFMAN CO | TOLEDO | OH |
| Larsen Foundry | Grafton | OH |
| LARSON CASTINGS | GRAFTON | OH |
| Larson Foundry | Grafton | OH |
| LARSON STEEL | GRAFTON | OH |
| LARSONS CONSOL. | GRAFTON | OH |
| LASALLE | TOLEDO | OH |
| LATONIA REFINING CORPORATION | CLEVELAND | OH |
| Lau Blower Company | Cleveland | OH |
| LAUGHLIN NAIL COMPANY | MORTONS FERRY | OH |
| LAUREL HOMES | CINCINNATI | OH |
| LAUREL HOMES HOUSING PROJECT | CINCINNATI | OH |
| LAW KNOX DIVISION & YOUNGSTOWN SHEET TUBE | YOUNGSTOWN | OH |
| LAWRENCEBERG PLUMBING & HEATING | CINCINNATI | OH |
| LAWSON DAIRY | CANTON | OH |
| LAWSON DAIRY COMPANY, MAIN ST. | CUYAHOGA FALLS | OH |
| LAWSON MILK COMPANY | CUYAHOGA FALLS | OH |
| LAZARUS & CO F & R | COLUMBUS | OH |
| LEAR SIEGLER | CLEVELAND | OH |
| LEAR SIEGLER | MAPLE HEIGHTS | OH |
| LEAR SIEGLER, INCORPORATED, POWER EQUIPMENT DIVISION | BEDFORD | OH |
| LEBANON BOILER | LEBANON | OH |
| LEBANON CORRECTIONAL INSTITUTE | LEBANON | OH |
| LEBANON HIGH SCHOOL – MILLER ROAD | LEBANON | OH |
| Lebanon Light & Power Plant | Lebanon | OH |
| LECTROLITE CORPORATION | DEFIANCE | OH |
| LECTROMELT | BARBERTON | OH |
| LEDERER TERMINAL WAREHOUSE CO | CLEVELAND | OH |
| LEE TIRE AND RUBBER COMPANY REPUBLIC RUBBER DIVISION | YOUNGSTOWN | OH |
| LEES BRADNER | CLEVELAND | OH |
| LEES-BRADNER | CLEVELAND | OH |
| LEETONIA STEEL COMPANY | LEETONIA | OH |
| LEHIGH PORTLAND CEMENT COMPANY | WELLSTON | OH |
| LEISY BREWING COMPANY | CLEVELAND | OH |
| Leonard Avenue School | Columbus | OH |
| LEONARD C HANNA | LORAIN | OH |
| LESAVOY INDUSTRIES | NEWARK | OH |
| LESTER ENGINEERING | BEDFORD | OH |
| LESTER INDUSTRIES | BEDFORD | OH |
| LEVEY INK – TANKS | CINCINNATI | OH |
| LEVEY INK – TANKS | EVENDALE | OH |
| LEVEY INK – VARNISH BUILDING & BOILER – 630 GLENDALE-MILFORD ROAD | CINCINNATI | OH |
| LEVEY INK – VARNISH BUILDING & BOILER #2 – 630 GLENDALE-MILFORD ROAD | CINCINNATI | OH |
| LEVEY INK – VARNISH BUILDING & BOILER #3 – 630 GLENDALE-MILFORD ROAD | CINCINNATI | OH |
| LEXINGTON ABRASIVES, INCORPORATED, SANDCAP ABRASIVES | ALLIANCE | OH |
| LEXINGTON SOY PRODUCTS COMPANY | LEXINGTON | OH |
| LIBBEY GLASS COMPANY | TOLEDO | OH |
| LIBBEY OWENS * | TOLEDO | OH |
| Libbey Owens Ford | Toledo | OH |
| Libbey Owens Ford | Rossford | OH |
| LIBBEY OWENS FORD GLASS C | TOLEDO | OH |
| LIBBEY OWENS FORD GLASS CO | ROSSFORD | OH |
| LIBBEY OWENS FORD GLASS CO ROSSFORD PLANT BOILER ROOM | ROSSFORD | OH |
| LIBBEY OWENS FORD GLASS CO. | TOLEDO | OH |
| LIBBEY OWENS FORD GLASS CO. | ROSSFORD | OH |
| LIBBEY OWENS FORD GLASS CO. – EAST BROADWAY PLANT | TOLEDO | OH |
| LIBBEY OWENS FORD GLASS CO. – PLANT #6 | ROSSFORD | OH |
| LIBBEY OWENS FORD GLASS CO. – STORAGE WAREHOUSE | TOLEDO | OH |
| LIBBEY OWENS-FORD GLASS CO PLANT 4 | TOLEDO | OH |
| LIBBEY OWENS-FORD GLASS CO PLANT 5 | TOLEDO | OH |
| LIBBEY OWENS-FORD GLASS CO PLANT 6 | TOLEDO | OH |
| LIBBEY OWENS-FORD GLASS CO PLANT 7 | TOLEDO | OH |
| LIBBEY-OWENS FORD BUILDING | TOLEDO | OH |
| Libbey-Owens-Ford – East Broadway Plant | Toledo | OH |
| LIBBEY-OWENS-FORD GLASS CO | TOLEDO | OH |
| LIBBEY-OWENS-FORD GLASS CO EAST BROADWAY PLANT | TOLEDO | OH |
| Libbey-Owens-Ford Glass Company | Rossford | OH |
| LIBBEY-OWENS-FORD GLASS COMPANY | TOLEDO | OH |
| LIBBEY-OWENS-FORD GLASS COMPANY | EAST TOLEDO | OH |
| LIBBEY-OWENS-FORD GLASS COMPANY, PLASKON DIVISION | TOLEDO | OH |
| Libby Owens Ford Glass | Rossford | OH |
| Libby Owens Ford Glass | Toledo | OH |
| LIBERTY STEEL COMPANY | WARREN | OH |
| LIBERTY WORKS | WARREN | OH |
| LICKING COUNTY HEALTH SYSREAR PRESS ROOM | NEWARK | OH |
| LICKING COUNTY HOSP. | HEATH | OH |
| LICKING COUNTY MEMORIAL HOSPITAL | NEWARK | OH |
| LICKING LIGHT AND POWER COMPANY | NEWARK | OH |
| LICKING MEMORIAL HOSPITAL | NEWARK | OH |
| LICKING MEMORIAL HOSPITAL | HEATH | OH |
| LIGHT AND POWER PLANT | FAIRPORT HARBOR | OH |
| LILLE LEE APTS – FOULTON & NASSAU STREETS | CINCINNATI | OH |
| LIMA AND TOLEDO TRACTION COMPANY | LIMA | OH |
| LIMA ELECTRIC RAILWAY AND LIGHT COMPANY – NORTH ELIZABETH STREET PLANT | LIMA | OH |
| Lima Locomotive | Lima | OH |
| LIMA MEMORIAL HOSPITAL | LIMA | OH |
| Lima Ordnance Plant | Lima | OH |
| LIMA PACKING COMPANY | LIMA | OH |
| LIMA REFINERY PLANT | LIMA | OH |
| LIMA STATE HOSPITAL | CANTON | OH |
| LIMA STATE HOSPITAL | LIMA | OH |
| LIMA SUPPLY | LIMA | OH |
| LIMA SUPPLY | DELPHOS | OH |
| LIMBACH BUILDING – 5348 VINE STREET | CINCINNATI | OH |
| LIMBACH COMPANY, 1271 E. 6TH ST. | CLEVELAND | OH |
| LINCOLN ELECTRIC | CLEVELAND | OH |
| LINCOLN ELECTRIC – MAIN PLANT | EUCLID | OH |
| LINCOLN ELECTRIC – MENTOR CONSUMABLES PLANT | MENTOR | OH |
| LINCOLN ELECTRIC COMPANY – EUCLID PLANT | EUCLID | OH |
| Lincoln Elementary School | Cincinnati | OH |
| LINCOLN SCHOOL | WILLOUGHBY | OH |
| LINCOLN SCHOOL – FREEDOM SCHOOL | CANTON | OH |
| LINCOLNSHIRE ELEM. SCHOOL | MAUMEE | OH |
| LINCOLNSHIRE ELEM. SCHOOL – WASHINGTON TOWNSHIP | MAUMEE | OH |
| Linde Air Products Co. | Ashtabula | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Ashtabula | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Canton | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Cleveland | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Middletown | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Portsmouth | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Steubenville | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Welland | OH |
| Linde Air Products Co. (Union Carbide & Carbon Corp.) | Youngstown | OH |
| LINDE COMPANY | ASHTABULA | OH |
| LINDERME TUBE | CLEVELAND | OH |
| LINMOOR JUNIOR HIGH SCHOOL | COLUMBUS | OH |
| LINTERN CORP. | MENTOR | OH |
| LIPPINCOTT COMPANY | NAPOLEON | OH |
| Lipsett Steel | Lorain | OH |
| Liquid Carbonic Corporation | Cleveland | OH |
| LIQUID CARBONIC CORPORATION | URBANA | OH |
| LITTLE MIAMI PLUMBING | CINCINNATI | OH |
| Litzler Company Inc | Cleveland | OH |
| L-K HEATING | CLEVELAND | OH |
| LLOYD BOOTH COMPANY | YOUNGSTOWN | OH |
| LLOYD BOOTH DEPARTMENT | YOUNGSTOWN | OH |
| Lockbourne Air Force Base | Lockbourne | OH |
| LOCKHEED MARTIN – PLANT D – BOILER ROOM | AKRON | OH |
| LOCKHEED MARTIN MARITIME SYSTEMS | AKRON | OH |
| LODGE AND DAVIS MACHINE TOOL COMPANY | CINCINNATI | OH |
| Loew’s Theatre | Akron | OH |
| LOF plant | Rossford | OH |
| LOGAN LONG CO | FRANKLIN | OH |
| LOGAN-LONG COMPANY – MANUFACTURING PLANT | FRANKLIN | OH |
| LOGANSPORT | LOGANSPORT | OH |
| LONG AND ALSTALTER COMPANY | HAMILTON | OH |
| LONG MANUFACTURING COMPANY | MECHANICSBURG | OH |
| LONG VIEW STATE HOSPITAL | CINCINNATI | OH |
| LONGCOY ELEMENTARY SCHOOL | CANTON | OH |
| LONGFELLOW SCHOOL | EASTLAKE | OH |
| LONGVIEW HOSPITAL | CARTHAGE | OH |
| LORAIN AND CLEVELAND RAILROAD COMPANY | CLEVELAND | OH |
| LORAIN AND CLEVELAND RAILROAD COMPANY | LORAIN | OH |
| LORAIN COMMUNITY HOSP | LORAIN | OH |
| Lorain Community Hospital | Lorain | OH |
| LORAIN COUNTY ELECTRIC COMPANY – ELYRIA PLANT | ELYRIA | OH |
| LORAIN COUNTY HOSP | LORAIN | OH |
| LORAIN REFRACTORIES | LORAIN | OH |
| Lorain Shipyard | Lorain | OH |
| LORAIN STEEL COL | LORAIN | OH |
| LORAIN STEEL COMPANY | LORAIN | OH |
| LORAIN STREET RAILWAY COMPANY | LORAIN | OH |
| Lorain Treatment Plant | Lorain | OH |
| LORAINE CITY HALL – WEST ERIE STREET | LORAINE | OH |
| LORAINE SHIPBUILDING COMPANY | LORAIN | OH |
| LOSANTIVILLE COUNTRY CLUB | CINCINNATI | OH |
| LOUDON BOWMAN DIVISION | NAPOLEON | OH |
| LOUGHLIN NAIL COMPANY | MARTINS FERRY | OH |
| Louisville & Nashville Railroad | Cincinnati | OH |
| Louisville Fire Brick Works Inc | Middletown | OH |
| Lowe Brothers Paint Factory | Dayton | OH |
| LOWER MILLS | YOUNGSTOWN | OH |
| LOWER UNION MILLS | YOUNGSTOWN | OH |
| LOXCREEN | ROXBORO | OH |
| LOYOLA RETREAT HOUSE | MILFORD | OH |
| LTV | YOUNGSTOWN | OH |
| LTV | Warren | OH |
| LTV | Cleveland | OH |
| LTV Campbell Plant | Campbell | OH |
| LTV CORPORATION | CLEVELAND | OH |
| LTV CORPORATION, POWERHOUSE DEPARTMENT | CLEVELAND | OH |
| LTV Republic / Jones & Laughlin Steel | Cleveland | OH |
| LTV Republic Steel | Canton | OH |
| LTV Republic Steel | Elyria | OH |
| LTV Republic Steel | Lorain | OH |
| LTV Republic Steel | Massillon | OH |
| LTV Republic Steel | Niles | OH |
| LTV Republic Steel | Valley View | OH |
| LTV SHEET AND TUBE | CANTON | OH |
| LTV SHEET AND TUBE | CAMPBELL | OH |
| LTV SHEET AND TUBE | NILES | OH |
| LTV SHEET AND TUBE | YOUNGSTOWN | OH |
| LTV SHEET AND TUBE | MASSILLON | OH |
| LTV STEEL | YOUNGSTOWN | OH |
| LTV STEEL | LOUISVILLE | OH |
| LTV STEEL | CLEVELAND | OH |
| LTV STEEL | CANTON | OH |
| LTV STEEL | MASSILLON | OH |
| LTV Steel (fka J&L Steel / Republic Steel) | CANTON | OH |
| LTV Steel (fka J&L Steel / Republic Steel) | MASSILLON | OH |
| LTV Steel (fka J&L Steel / Republic Steel) | YOUNGSTOWN | OH |
| LTV STEEL CORPORATION | CLEVELAND | OH |
| LTV STEEL FLAT ROLLED COMPANY | CLEVELAND | OH |
| LTV STEEL FLAT ROLLED COMPANY, POWERHOUSE #1 | CLEVELAND | OH |
| LTV Steel Mill | Cleveland | OH |
| LUBRIZOL | PAINESVILLE | OH |
| LUBRIZOL | SVILLE | OH |
| LUBRIZOL | WICKLIFFE | OH |
| LUBRIZOL | EUCLID | OH |
| LUBRIZOL CORP | PAINESVILLE | OH |
| LUBRIZOL CORP | WICKLIFFE | OH |
| LUBRIZOL CORP – BLDG #21 | PAINESVILLE | OH |
| Lubrizol Corp. | Painesville | OH |
| Lubrizol Corp. | Wickliffe | OH |
| LUBRIZOL CORPORATION | CLEVELAND | OH |
| LUBRIZOL CORPORATION | WICKLIFFE | OH |
| LUBRIZOL CORPORATION | PAINESVILLE | OH |
| LUDOWICI CELADON COMPANY | NEW LEXINGTON (PERRY COUNTY) | OH |
| LUDOWICI CELADON COMPANY | NEW LEXINGTON | OH |
| LUFRAN COMPANY | MACEDONIA | OH |
| Lukenheimer Company | Cincinnati | OH |
| Lummus Company | Toledo | OH |
| LUNKEN AIRPORT | CINCINNATI | OH |
| LUNKENHEIMER | CINCINNATI | OH |
| LUNKENHEIMER COMPANY | CINCINNATI | OH |
| LUNKENHEIMER VALVE CO. | CARTHAGE | OH |
| LUTHERAN HOSPITAL | CLEVELAND | OH |
| LUTHERAN MEDICAL CENTER | CLEVELAND | OH |
| Lutz Concrete Company | Bucyrus | OH |
| Lyman Boat Works | Sandusky | OH |
| LYON AND GREENLEAF | WAUSEON | OH |
| Lyric & State Theatres | Lima | OH |
| M & C | BARBERTON | OH |
| M & C TOOL CRIB | BARBERTON | OH |
| M & M Insulation | New Middletown | OH |
| M & R DIETETIC LABORATORIES, INC. | COLUMBUS | OH |
| M & R DIETETIC LABS | COLUMBUS | OH |
| M E CAMPBELL JUNIOR HIGH – WINTON HILLS DRIVE | CINCINNATI | OH |
| M J GIBBONS SUPPLY OF MIDDLETOWN | MIDDLETOWN | OH |
| M&M Insulation Co. | New Middletown | OH |
| M&R DIETETIC | COLUMBUS | OH |
| M. BURKHARDT BREWING COMPANY | AKRON | OH |
| M. WERK COMPANY | CINCINNATI | OH |
| M. WERK COMPANY | ST. BERNARD | OH |
| M. WERK SOAP COMPANY | ST. BERNARD | OH |
| M.A. BRADLEY | CLEVELAND | OH |
| M.A. HANNA AND COMPANY | CLEVELAND | OH |
| M.A. HANNA AND COMPANY, THE BUFFALO UNION FURNACE COMPANY | CLEVELAND | OH |
| M.B. FARRIN LUMBER COMPANY | CINCINNATI | OH |
| M.C.LILLY COMPANY | COLUMBUS | OH |
| M.J. GIBBONS SUPPLY COMPANY | DAYTON | OH |
| MABLEY & CAREW – BEECHMONT MALL | CINCINNATI | OH |
| Mack Industries | Valley City | OH |
| MADER MACHINE | BIRMINGHAM | OH |
| MADISONVILLE WATER WORKS | MADISONVILLE | OH |
| MAGNESIUM ALUMINUM | CLEVELAND | OH |
| MAGNETICS INTERNING | MAPLE HEIGHTS | OH |
| MAGNUS METALS – 3670 WEAK ROAD | EVENDALE | OH |
| MAHONING & SHENANGO RAILWAY AND LIGHT COMPANY – NORTH STREET POWER PLANT LOWELLVILLE | LOWELLVILLE | OH |
| MAHONING COUNTY JAIL | YOUNGSTOWN | OH |
| MAHONING VALLEY IRON COMPANY | YOUNGSTOWN | OH |
| MAHONING VALLEY RAILWAY COMPANY | YOUNGSTOWN | OH |
| MAHONING VALLEY RAILWAY COMPANY | NILES | OH |
| MAHONING VALLEY SANITARY DISTRICT – WATER PURIFICATION AND PUMPING WORKS AT 1181 OHLTOWN-MCDONALD ROAD | MINERAL RIDGE | OH |
| MAHONING VALLEY SPLY CO | AKRON | OH |
| MAHONING VALLEY SUPPLY, INC. | AKRON | OH |
| MAHONING VALLEY TRACTOR COMPANY | YOUNGSTOWN | OH |
| MAHONING VALLEY WORKS | YOUNGSTOWN | OH |
| MAHONINGSIDE | WARREN | OH |
| Makonino & Shenaneo Railway & Light Co | Lowellville | OH |
| Mallory Battery Company | Cleveland | OH |
| MALLORY SHARON METALS CORP | ASHTABULA | OH |
| MALLORY SHARON METALS CORP – METALS REDUCTION PLANT | ASHTABULA | OH |
| MALLORY SHARON METALS CORPORATION | ASHTABULA | OH |
| MALLORY-SHARON TITANIUM CORPORATION | ASHTABULA | OH |
| MALONE SEWING MACHINE COMPANY | CHILLICOTHE | OH |
| MALONEY ALUMINUM EXT. | SEBRING | OH |
| Mameco Int. | Cleveland | OH |
| Manchester Power Station | Manchester | OH |
| Mansbach Metal | Jackson | OH |
| MANSFIELD BRASS & ALUM | NEW WASHINGTON | OH |
| MANSFIELD ELECTRIC LIGHT AND POWER COMPANY – MANSFIELD PLANT | MANSFIELD | OH |
| MANSFIELD GENERAL HOSPITAL | MANSFIELD | OH |
| MANSFIELD GENERAL HOSPITAL, MEDICAL CENTER | MANSFIELD | OH |
| MANSFIELD HIGH SCHOOL | MANSFIELD | OH |
| MANSFIELD HOSPITAL | CANTON | OH |
| MANSFIELD HOSPITAL | MANSFIELD | OH |
| MANSFIELD LAHM AIRPORT | MANSFIELD | OH |
| MANSFIELD METAL FABRICATING INC | MANSFIELD | OH |
| MANSFIELD METAL FABRICATING, INC. | MANSFIELD | OH |
| MANSFIELD METAL TREATMENT | MANSFIELD | OH |
| MANSFIELD MUNICIPAL AIRPORT | MANSFIELD | OH |
| MANSFIELD PATTERN WORKS | MANSFIELD | OH |
| MANSFIELD PLUMBING | PERRYSBURG | OH |
| MANSFIELD PRODUCTS | MANSFIELD | OH |
| MANSFIELD RAILWAY, LIGHT & POWER COMPANY – POWER PLANT | MANSFIELD | OH |
| MANSFIELD REFORMATORY | MANSFIELD | OH |
| MANSFIELD REFORMATORY | LIMA | OH |
| Mansfield Sanitary | Perrysville | OH |
| Mansfield Sanitary Inc. | Perrysville | OH |
| MANSFIELD SHEET AND TIN PLATE COMPANY | MANSFIELD | OH |
| Mansfield Telephone Co. – South Mulberry St. Building | Mansfield | OH |
| MANSFIELD TIRE AND RUBBER COMPANY | MANSFIELD | OH |
| MANSFIELD WATER WORKS | MANSFIELD | OH |
| MARATHON ASHLAND PETROLEUM | CANTON | OH |
| Marathon Oil | Findlay | OH |
| MARATHON OIL COMPANY | FINDLAY | OH |
| MARATHON OIL CORPORATION – HEADQUARTERS BUILDING | FINDLAY | OH |
| MARATHON TIRE AND RUBBER COMPANY | AKRON | OH |
| MARATHON TIRE AND RUBBER COMPANY | CUYAHOGA FALLS | OH |
| MARBLE PLANT | NEWARK | OH |
| MARDER MACHINE | BIRMINGHAM | OH |
| Maremount Corporation | Paulding | OH |
| MARIA GARDEN CENTER | COLUMBIA TOWNSHIP | OH |
| MARIA GARDEN CENTER | COLUMBIA STATION | OH |
| MARIEMONT LIBRARY | CINCINNATI | OH |
| MARIETTA COLLEGE, POWERHOUSE | MARIETTA | OH |
| Marietta Shipyard | Marietta | OH |
| Marina Towers | Lakewood | OH |
| Marion Brick | Marion | OH |
| MARION BRICK CORP | MARION | OH |
| Marion Correctional Institute | Marion | OH |
| MARION ELECTRIC LIGHT AND POWER COMPANY – MARION PLANT | MARION | OH |
| MARION FRANKLIN RECREATION CENTER – 2699 LOCKBOURNE | COLUMBUS | OH |
| MARION FRANKLIN RECREATION CENTER, 2699 LOCKBOURNE | COLUMBUS | OH |
| MARION GENERAL HOSPITAL | MARION | OH |
| MARION POWER | MARION | OH |
| Marion Power Shovel | Marion | OH |
| MARION POWER SHOVEL – PLANT 3 | MARION | OH |
| Marion Power Shovel Plant | Marion | OH |
| MARION RAILWAY LIMITED POWER COMPANY | MARION | OH |
| MARION RESERVE POWER COMPANY | MARION | OH |
| MARION SHOVEL | MARION | OH |
| MARJORIE P LEE HOME – SHAW AVENUE | CINCINNATI | OH |
| MARJORIE P. LEE JOB, 3550 SHAW AVE. | CINCINNATI | OH |
| MARK MANUFACTURING COMPANY | ZANESVILLE | OH |
| MARKS TRACTOR | BRUNSWICK | OH |
| MARLESTA NURSING HOME | FINDLEY | OH |
| MAR-PAR INSULATING COMPANY | MARIETTA | OH |
| MARQUETTE CEMENT | SUPERIOR | OH |
| MARQUETTE CEMENT MANUFACTURING CO | SUPERIOR | OH |
| MARQUETTE CEMENT MFG CO | SUPERIOR | OH |
| Marquette Cement MFG Co | Superior/Pedro | OH |
| MARS INC/KAL KAN PET CAREPERMIT #10101 | COLUMBUS | OH |
| Martin Builders | Athens | OH |
| MARTIN-BARRISS COMPANY | CLEVELAND | OH |
| MARTINDALE ELECTRIC CO. | CLEVELAND | OH |
| MARTING IRON AND STEEL COMPANY | CULBERTSON | OH |
| MARTING IRON AND STEEL COMPANY | IRONTON | OH |
| MARTINS FERRY WATER WORKS | MARTINS FERRY | OH |
| MARYMOUNT HOSPITAL | CLEVELAND | OH |
| MARYMOUNT HOSPITAL | GARFIELD HEIGHTS | OH |
| MASON COLOR & CHEMICAL | EAST LIVERPOOL | OH |
| MASON TIRE AND RUBBER COMPANY | KENT | OH |
| MASON TIRE AND RUBBER COMPANY | BEDFORD | OH |
| MASONIC TEMPLE | CANTON | OH |
| MASONIC TEMPLE | OXFORD | OH |
| MASSILLON ELECTRIC AND GAS COMPANY – MASSILLON GAS WORKS | MASSILLON | OH |
| MASSILLON MUNICIPAL GOVERNMENT CENTER – ONE JAMES DUNCAN PLAZA | MASSILLON | OH |
| MASSILLON ROLLING MILL COMPANY | MASSILLON | OH |
| MASSILLON STATE HOSPITAL | MASSILLON | OH |
| MASSILLON STEEL | MASSILLON | OH |
| MAST CROWELL AND KIRKPATRICK | SPRINGFIELD | OH |
| Master Electric Company | Dayton | OH |
| MASTER ELECTRIC COMPANY – PLANT | DAYTON | OH |
| MASTER FABRICATORS | CLEVELAND | OH |
| Master Metal | Cleveland | OH |
| MASTER TIRE AND RUBBER COMPANY | DAYTON | OH |
| MATHER CO. | TOLEDO | OH |
| MAU SHERWOOD SUPPLY CO | AKRON | OH |
| MAUMEE CHEMICAL – 501 MURRAY AVENUE | CINCINNATI | OH |
| MAUMEE CHEMICAL COMPANY | ST. BERNARD | OH |
| MAUMEE ROLLING MILL COMPANY | TOLEDO | OH |
| MAU-SHERWOOD SUPPLY CO. | AKRON | OH |
| MAY CO. | CLEVELAND | OH |
| MAY COMPANY JOB, LAKE ERIE HALL | MENTOR | OH |
| MAYFAIR SWIM AND TENNIS | RICHMOND HEIGHTS | OH |
| MAYFIELD HEIGHTS HIGH SCHOOL | MAYFIELD | OH |
| MAYFIELD HTS HIGH SCHOOL | MAYFIELD HTS | OH |
| MC GLEAN INDUSTRIES | CLEVELAND | OH |
| MC MYLER MANUFACTURING COMPANY | WARREN | OH |
| MCALPINS – 3RD FLOOR | CINCINNATI | OH |
| MCBRIDE PLBG & HTG MALLORY SHARON MTLS CORP | ASHTABULA | OH |
| MCCALL CORP | DAYTON | OH |
| Mccall Printing, Aka Dayton Press | Dayton | OH |
| McCook Field Storm Pump Station | Dayton | OH |
| MCCRACKEN POWER HOUSE | COLUMBUS | OH |
| MCCRAKEN POWER PLANT | COLUMBUS | OH |
| MCCULLOUGH-HYDE HOSPITAL | OXFORD | OH |
| MCDAWEL CO C/O WELLMAN CO | CLEVELAND | OH |
| MCDERMOTT TECHNOLOGY, INCORPORATED | ALLIANCE | OH |
| MCDONALD STEEL | MCDONALD | OH |
| MCDONALD`S | CINCINNATI | OH |
| MCDOWELL – WELLMAN ENG. | CLEVELAND | OH |
| MCDOWELL-WELLMAN | CLEVELAND | OH |
| MCDOWELL-WELLMAN ENGINEERING COMPANY | CLEVELAND | OH |
| MCGEAN CHEMICAL COMPANY | CLEVELAND | OH |
| MCGEAN CHEMICAL PLANT | CLEVELAND | OH |
| MCKELFREY IRON COMPANY | LEETONIA | OH |
| MCKINNON DASH & HARDWARE COMPANY | TROY | OH |
| MCKINNON DASH COMPANY | TROY | OH |
| MCMYLER INTERSTATE COMPANY | BEDFORD | OH |
| MCMYLER MANUFACTURING COMPANY | CLEVELAND | OH |
| McNell Machine & Engineering Company | Akron | OH |
| MCSWEENEY’S MILL & MINE SERVICE | SOUTH POINT | OH |
| MEAD CORPORATION | CINCINNATI | OH |
| MEAD CORPORATION | CHILLICOTHE | OH |
| Mead Corporation | Chilicothe | OH |
| Mead Paper | Chillicothe | OH |
| Mead Paper | Cincinnati | OH |
| Mead Paper | Chilicothe | OH |
| MEAD PAPER COMPANY | DAYTON | OH |
| MEAD PAPER COMPANY | CHILLICOTHE | OH |
| MEAD PULP AND PAPER COMPANY | CHILLICOTHE | OH |
| MEAD STRAW PULP COMPANY | CHILLICOTHE | OH |
| MEAD TOWER – SECOND STREET | DAYTON | OH |
| MEADE PAPER COMPANY | CLEVELAND | OH |
| MEADOWDALE SCHOOL | DAYTON | OH |
| MECHANICAL RUBBER COMPANY | CLEVELAND | OH |
| MECHANICSBURG HIGH SCHOOL | MECHANICSBURG | OH |
| MEDERSA CEMENT COMPANY | SILICA | OH |
| MEDICAL CENTER ASSOCIATION, LIMITED | CANTON | OH |
| MEDINA FOUNDRY COMPANY | MEDINA | OH |
| MEDUSA CEMENT CO | SILICA | OH |
| MEDUSA PORTLAND CEMENT | SILICA | OH |
| MEDUSA PORTLAND CEMENT COMPANY | SILICA | OH |
| MEGGITT AIRCRAFT BRAKING SYSTEMS | AKRON | OH |
| MEIERS WINE CELLAR – PLAINFIELD ROAD | CINCINNATI | OH |
| MEMORIAL COMMUNITY CENTER BUILDING | CINCINNATI | OH |
| MEMORIAL HOSPITAL | FREMONT | OH |
| MEMORIAL HOSPITAL OF GENEVA | GENEVA | OH |
| MENDEL, DRUCKER COMPANY | NORWOOD | OH |
| MENTOR HIGH SCHOOL | MENTOR | OH |
| MERCHANTS HEAT, LIGHT AND POWER COMPANY | CANTON | OH |
| MERCHANTS ICE AND COLD STORAGE COMPANY | CINCINNATI | OH |
| MERCK AND COMPANY | DANVILLE | OH |
| MERCY FRANCISCAN HOSPITAL, MT. AIRY | CINCINNATI | OH |
| MERCY HOSPITAL | COLUMBUS | OH |
| Mercy Hospital | Springfield | OH |
| MERCY HOSPITAL | HAMILTON | OH |
| MERCY HOSPITAL – DISHWASH ROOM | CINCINNATI | OH |
| MERIAM WELD | CLEVELAND | OH |
| MERILLAT IND. | JACKSON | OH |
| MERRELL NATIONAL LABORATORIES | CINCINNATI | OH |
| MERRELL-NATIONAL LAB | CINCINNATI | OH |
| MERSMAN BROTHERS | CELINA | OH |
| MERSMAN BROTHERS AND BRANDTS COMPANY | CELINA | OH |
| MERSMAN BROTHERS CORPORATION | CELINA | OH |
| MESOPOTAMIA MENS CLUB | MESOPOTAMIA | OH |
| Mesta Machine Company | Steubenville | OH |
| Mesta Machine Company (for ALCOA) | Cleveland | OH |
| METAL FORGE CO | COLUMBUS | OH |
| METAL REDUCTION PLANT | ASHTABULA | OH |
| METALS APPLIED | CLEVELAND | OH |
| METHODIST BOOK CONCERN | CINCINNATI | OH |
| METHODIST PUBLISHING HOUSE | CINCINNATI | OH |
| METRO GENERAL HOSPITAL | CLEVELAND | OH |
| METRO HOSPITAL | CLEVELAND | OH |
| Metro Sewer District of Cinninati | Cincinnati | OH |
| Metro Sewer District of Cinninati | Kemper | OH |
| METROHEALTH MEDICAL CENTER | CLEVELAND | OH |
| METROPOLITAN ALLOYS | CLEVELAND | OH |
| METROPOLITAN GENERAL HOSPITAL | CLEVELAND | OH |
| MET-TECH N. | ROYALTON | OH |
| MEYER HUSCHART PACKING COMPANY | CINCINNATI | OH |
| MIAMI FORT POWER | NORTH BEND | OH |
| MIAMI FORT POWER PLANT | CINCINNATI | OH |
| MIAMI FORT POWER STATION | NORTH BEND | OH |
| MIAMI FORT STATION | NORTH BEND | OH |
| MIAMI LIGHT HEAT AND POWER COMPANY | PIQUA | OH |
| MIAMI OIL AND SOAP WORKS | CINCINNATI | OH |
| MIAMI PAPER COMPANY | WEST CARROLLTON | OH |
| MIAMI PAPERS COMPANY | DAYTON | OH |
| MIAMI POWDER COMPANY | GOES | OH |
| MIAMI UNIVERSITY – FOOD SERVICE BUILDING – BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY – HAMILTON BRANCH CAMPUS – PHASE II – BUTLER COUNTY | HAMILTON | OH |
| MIAMI UNIVERSITY – KREGER HALL – BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY – MCGUFFEY HALL – PHASE II | OXFORD | OH |
| MIAMI UNIVERSITY – RESIDENT HALLS 15 & 16 – BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY – UPHAM HALL – BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY – WELLS HALL DORMITORY – BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY OHIO – ALUMNI LIBRARY | OXFORD | OH |
| MIAMI UNIVERSITY, FOOD SERVICE BUILDING, BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY, HAMILTON BRANCH CAMPUS, PHASE II, BUTLER COUNTY | HAMILTON | OH |
| MIAMI UNIVERSITY, KREGER HALL, BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY, RESIDENT HALLS 15 & 16, BUTLER COUNTY | OXFORD | OH |
| MIAMI UNIVERSITY, UPHAM HALL, BUTLER COUNTY | OXFORD | OH |
| MIAMI VALLEY COATED PAPER COMPANY | FRANKLIN | OH |
| MIAMI VALLEY GAS AND FUEL COMPANY – LIGHTING PLANT | OSGOOD | OH |
| Miami Valley Hospital | Dayton | OH |
| MIAMI VALLEY LAB | CINCINNATI | OH |
| MIAMI VALLEY RAILWAY COMPANY | PIQUA | OH |
| MIAMI VALLEY RD. | ROSS | OH |
| MIAMISBURG BOX BOARD DIVISION, INTERSTATE FOLDING BOX COMPANY | MIAMISBURG | OH |
| MIAMISBURG HIGH SCHOOL | MIAMISBURG | OH |
| MIAMISBURG LIGHT AND WATER COMPANY – WATER AND ELECTRICITY PLANT | MIAMISBURG | OH |
| MIAMISBURG PAPER COMPANY | MIAMISBURG | OH |
| MIAMISBURG PAPER COMPANY DIVISION | WEST CARROLLTON | OH |
| MIAMISBURG WATER WORKS | MIAMISBURG | OH |
| MIAMY STONE AND GRAVEL COMPANY | MIAMI GROVE | OH |
| MID PARK HIGH SCHOOL BIG CRREK PARK – BIG CREEK PARKWAY | MIDDLEBURGH HEIGHTS | OH |
| MID -WEST BOX COMPANY | CIRCLEVILLE | OH |
| MIDDLE SCHOOL | NEW MIAMI | OH |
| MIDDLEBURG HEIGHTS WASTE | MIDDLEBURG HEIGHTS | OH |
| MIDDLETOWN DEVELOPMENT & SUPPLY COMPANY | MIDDLETOWN | OH |
| MIDDLETOWN GAS AND ELECTRIC COMPANY – MIDDLETOWN PLANT | MIDDLETOWN | OH |
| MIDDLETOWN HOSPITAL ASSOC | MIDDLETOWN | OH |
| MIDDLETOWN MACHINE COMPANY | MIDDLETOWN | OH |
| MIDDLETOWN SAND | MIDDLETOWN | OH |
| MIDDLETOWN SEWAGE DISPOSAL PLANT | MIDDLETOWN | OH |
| MIDDLETOWN WORKS | MIDDLETOWN | OH |
| MIDDLETOWN WORKS, BOILER #3 | MIDDLETOWN | OH |
| MIDLAND AND ROSS CORP UNIT CA | TOLEDO | OH |
| Midland Ross | Cleveland | OH |
| MIDLAND ROSS CORP UNIT CA | TOLEDO | OH |
| MIDLAND ROSS CORP. | TOLEDO | OH |
| Midland Ross Corporation | Toledo | OH |
| Midland Steel | Cleveland | OH |
| Midland Steel | Sagamore Hills | OH |
| MIDLAND STEEL PRODUCTS COMPANY | CLEVELAND | OH |
| MIDLAND-ROSS CORPORATION | PAINESVILLE | OH |
| MIDLAND-ROSS CORPORATION | CLEVELAND | OH |
| MIDLAND-ROSS CORPORATION | TOLEDO | OH |
| MIDMARK CORP | MINSTER | OH |
| MID-OHIO SPORTS | LEXINGTON | OH |
| MIDPARK HIGH SCHOOL | MIDDLEBURG HEIGHTS | OH |
| Midwest Products Co. | Cleveland | OH |
| Midwest Rubber | Barberton | OH |
| MIDWEST RUBBER | AKRON | OH |
| MIDWEST RUBBER COMPANY | BARBERTON | OH |
| MIDWEST RUBBER RECLAIMING COMPANY | BARBERTON | OH |
| MIKE THOMPSON | ROCKY RIVER | OH |
| MILACRON INC. | OAKLEY | OH |
| MILBURN WAGON COMPANY | TOLEDO | OH |
| MILCREEK VALLEY STREET RAILWAY | ST. BERNARD | OH |
| MILL CREEK DISTILLING COMPANY | CINCINNATI | OH |
| Mill Creek Sewage | Cincennati | OH |
| MILL CREEK VALLEY STREET RAILWAY COMPANY | ST. BERNARD | OH |
| MILLCREEK | CINCINNATI | OH |
| MILLENIUM CHEMICAL PLANT | GENEVA | OH |
| MILLENNIUM CHEMICAL | ASHTABULA | OH |
| MILLER DUBRUL AND PETERS MANUFACTURING COMPANY | CINCINNATI | OH |
| MILLER LAUNDRY | WAPAKANETA | OH |
| Miller Refractories | Cleveland | OH |
| MILLER RUBBER COMPANY | AKRON | OH |
| MILLER RUBBER COMPANY | SOUTH AKRON | OH |
| MILLIGAN HARDWARE | EAST LIVERPOOL | OH |
| MILLOTTE TRANSFER STORAGE CO. | SANDUSKY | OH |
| MILLVALE COMMUNITY CENTER – BEEKMAN STREET | CINCINNATI | OH |
| MINING & METALS DIV MN-02 BLDG | MARIETTA | OH |
| MINNESOTA MINING & MFG. CO. | MONTPELIER | OH |
| Missile Corporation of America | Cleveland | OH |
| MITTAL STEEL | CLEVELAND | OH |
| Mobay Chemical | Hannibal | OH |
| MOBIL CHEMICAL | CINCINNATI | OH |
| MOBIL CHEMICAL | FERNALD | OH |
| MODEGLAS FIBERS INC | BREMEN | OH |
| MODEGLAS FIBERS, INC. | BREMEN | OH |
| MODEL CITIES NEIGHBORHOOD FACILITY | DAYTON | OH |
| MODEL PATTERN & FOUNDRY | CINCINNATI | OH |
| Modern Industrial Plastics | Dayton | OH |
| MODERN TOOL | CLEVELAND | OH |
| MODERN TOOL | VALLY CITY | OH |
| Mohawk Rubber | Akron | OH |
| MOHAWK RUBBER COMPANY | AKRON | OH |
| MOHAWK RUBBER COMPANY | EAST ARKON | OH |
| MOLDED FIBER GLASS BODY CO | ASHTABULA | OH |
| MOLDED FIBER GLASS BODY COMPANY | ASHTABULA | OH |
| MOLDED FIBER GLASS COMPANY | ASHTABULA | OH |
| MOLDED FIBERGLAS BODY CO | ASHTABULA | OH |
| MOLDED FIBERGLAS BODY CO – PLANT 4 | ASHTABULA | OH |
| MOLONEY ALUMINUM | SEBRING | OH |
| MOLONEY PRODUCTS | SEBRING | OH |
| MONAC ELEM. SCHOOL – WASHINGTON TOWNSHIP | MAUMEE | OH |
| MONAC ELEMENTARY SCHOOL | MAUMEE | OH |
| MONARCH ALUMINUM MANUFACTURING COMPANY | CLEVELAND | OH |
| MONARCH ELECTRIC | CLEVELAND | OH |
| MONARCH RUBBER COMPANY | HARTVILLE | OH |
| MONDIE FORGE | CLEVELAND | OH |
| MONONGAHELA VALLEY TRACTION COMPANY | MARIETTA | OH |
| Monsanto Chemical Company | Addyston | OH |
| MONSANTO CHEMICAL COMPANY | ADDISON | OH |
| MONSANTO CHEMICAL COMPANY | CINCINNATI | OH |
| MONSANTO CHEMICAL COMPANY – BUILDING 8 | ADDYSTON | OH |
| MONSANTO CHEMICAL COMPANY – PORT PLASTICS PLANT – 256 RIVER ROAD | ADDISON | OH |
| MONSANTO CHEMICAL COMPANY, POLYMERS & PETROCHEMICALS | ADDYSTON | OH |
| MONSANTO COMPANY | ADDYSTON | OH |
| MONSANTO COMPANY | CINCINNATI | OH |
| MONSANTO COMPANY – AIRCO BOX – RIVER ROAD | CINCINNATI | OH |
| MONSANTO COMPANY – POLYMERS & PETROCHEMICALS | ADDYSTON | OH |
| Monsanto Mound Plant | Miamisburg | OH |
| MONSANTO POLYMERS AND PETROCHEMICAL COMPANY | ADDYSTON | OH |
| MONTPELIER HIGH SCHOOL | MONTPELIER | OH |
| MONTPELIER MUNICIPAL WATER AND LIGHT STATION | MONTPELIER | OH |
| MORAINE PAPER COMPANY, DIVISION OF AMERICAN ENVELOPE COMPANY | WEST CARROLLTON | OH |
| MORAINE PRODUCTS DIVISION, GENERAL MOTORS CORPORATION | DAYTON | OH |
| Moreland Court Apartments | Cleveland | OH |
| MORGAN ENGINEERING COMPANY | ALLIANCE | OH |
| MORGAN SPRING COMPANY | STRUTHESS | OH |
| MORRIS BEAN & CO | YELLOW SPRINGS | OH |
| MORROW COUNTY HOSPITAL – MARION ROAD | MOUNT GILEAD | OH |
| MORROW COUNTY HOSPITAL, MARION RD. | MOUNT GILEAD | OH |
| MORTON SALT CO | RITTMAN | OH |
| Mosaic Tile | Ironton | OH |
| MOSINEE PAPER COMPANY | MIDDLETOWN | OH |
| Mosler Safe Co. | Hamilton | OH |
| MOSLER SAFE COMPANY | HAMILTON | OH |
| MOTOR REPAIR MFG. | CLEVELAND | OH |
| MOTORISTS MUTUAL INSURANCE COMPANY – OFFICE BUILDING – EAST BROAD STREET | COLUMBUS | OH |
| MOUNT CARMEL HOSPITAL | COLUMBUS | OH |
| MOUNT LOOKOUT JUNIOR HIGH SCHOOL – ERIE AVENUE | CINCINNATI | OH |
| MOUNT SINAI HOSPITAL | CLEVELAND | OH |
| MOUNT VERNON PLAZA – ATCHESON STREET | COLUMBUS | OH |
| MT VICTORY ELECTRIC LIGHT PLANT | MT VICTORY | OH |
| MT. UNION COLLEGE – MENS DORM | CANTON | OH |
| Mt. Vernon Bridge Company | Mt. Vernon | OH |
| Muddy Creek Tr Plant | Cincinnati | OH |
| MUDDY CREEK WASTE WATER | Cincinnati | OH |
| MUDLICK DISTILLING COMPANY | GERMANTOWN | OH |
| Muehlstein Company Incorporated | Akron | OH |
| MUFCO INDUSTRIES | ELYRIA | OH |
| MULLIN MANUFACTURING CORPORATION | SALEM | OH |
| MULLINS BODY CORPORATION | SALEM | OH |
| Mullins Manufacturing Co. | Warren | OH |
| MULLINS MANUFACTURING COMPANY | WARREN | OH |
| MULTI COLOR TYPE COMPANY | CINCINNATI | OH |
| MULTI INDUSTUBE SERVICE | WARREN | OH |
| MUNCIE, HARTFORD AND FORT WAYNE RAILWAY | CLEVELAND | OH |
| MUNCIPAL LIGHT AND POWER PLANT | TROY | OH |
| MUNICIPAL AIRPORT | DAYTON | OH |
| MUNICIPAL ELECTRIC PLANT | NAPOLEON | OH |
| MUNICIPAL LIGHT & POWER PLANT | NORWALK | OH |
| MUNICIPAL LIGHT AND POWER PLANT | TROY | OH |
| MUNICIPAL LIGHT AND POWER PLANT | DOVER | OH |
| MUNICIPAL LIGHT PLANT | TROY | OH |
| Municipal Light Plant | Painsville | OH |
| MUNICIPAL POWER AND LIGHT DEPARTMENT | GREENFIELD | OH |
| MUNICIPAL POWER PLANT | CELINA | OH |
| MUNICIPAL POWER PLANT | MIAMISBURG | OH |
| MUNICIPAL POWER PLANT | ORRVILLE | OH |
| MUNICIPAL POWER PLANT | SHELBY | OH |
| MUNICIPAL TRACTION COMPANY | CLEVELAND | OH |
| MUNICIPAL WATER WORKS & ELECTRIC | NAPOLEON | OH |
| Munters Corp | Cincinnati | OH |
| Murphy Roofing | Fairborn | OH |
| MURRAY COMPANY | FERN CREEK | OH |
| MUSKIGEEN COLLEGE, NATIONAL SCIENCE BUILDING | NEW CONCORDE | OH |
| Muskingum /Beverly/ Ohio Power Powerhouse | Beverly | OH |
| MUSKINGUM POWER STATION | BEVERLY | OH |
| MUSKINGUM RIVER POWER PLANT | BEVERLY | OH |
| MUSKINGUM RIVER POWER PLANT – UNIT 1 | BEVERLY | OH |
| MUSKINGUM RIVER POWER PLANT – UNIT 2 | BEVERLY | OH |
| MUSKINGUM RIVER POWER PLANT – UNIT 5 | BEVERLY | OH |
| MUTH BAKERY | CINCINNATI | OH |
| MYOTT INDUSTRIES | EASTLAKE | OH |
| N&W | ALLIANCE | OH |
| N. & W. RAILROAD | CONNEAUT | OH |
| N. A. S. A. | CLEVELAND | OH |
| N. A. S. A. LAB. – H. E. F. L. BLDG. | CLEVELAND | OH |
| N. A. S. A. LABORATORY – H. E. F. L. BLDG. | CLEVELAND | OH |
| N. A. S. A. LABORATORY – ROCKET LAB. | CLEVELAND | OH |
| N. A. S. A. LABORATORY – ROCKETT LAB. | CLEVELAND | OH |
| N.A.C.A. | Cleveland | OH |
| NACA | CLEVELAND | OH |
| NADLER SHOE STORE – 1550 CHASE AVENUE | CINCINNATI | OH |
| NANARRE AVE. SIDING | TOLEDO | OH |
| NAPOLEON POWER & LIGHT | NAPOLEON | OH |
| NAPOLEON WATER WORKS AND ELECTRIC LIGHT COMPANY – PLANT | NAPOLEON | OH |
| NARCO | MANCHESTER | OH |
| NASA | CLEVELAND | OH |
| NASA | SANDUSKY | OH |
| NASA – BASIC MATL LABORATORY | CLEVELAND | OH |
| NASA – LMPL BLDG | CLEVELAND | OH |
| NASA – PLUMBROOK STATION | SANDUSKY | OH |
| NASA BLDG L M P * | CLEVELAND | OH |
| NASA DEVELOPMENT ENGNG BLDG | CLEVELAND | OH |
| NASA ENGINE RESEARCH BLDG – CELLS SW 23 & SW 24 | CLEVELAND | OH |
| NASA LAB. | CLEVELAND | OH |
| NASA Lewis Research Center | Brookport | OH |
| NASA LEWIS RESEARCH CENTER | CLEVELAND | OH |
| NASA LEWIS RESEARCH CENTER – LMP LABORATORY | CLEVELAND | OH |
| NASA PLUMBROOK – B-3 TEST STAND | SANDUSKY | OH |
| NASA Propulsion Systems Laboratory | Cleveland | OH |
| NASA, Plum Brook Station | Sandusky | OH |
| Nasa-Lewis Research Center | Cleveland | OH |
| NATIONAL ACME | CLEVELAND | OH |
| NATIONAL ACME COMPANY | CLEVELAND | OH |
| NATIONAL ADVISORY COMMITTEE | CLEVELAND | OH |
| NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS | CLEVELAND | OH |
| NATIONAL ARTIFICIAL SILK COMPANY | CLEVELAND | OH |
| NATIONAL BISCUIT COMPANY | CINCINNATI | OH |
| NATIONAL BISCUIT COMPANY | MANSFIELD | OH |
| NATIONAL BOX BOARD COMPANY | MIDDLETOWN | OH |
| NATIONAL BRASS | CLEVELAND | OH |
| National Bronze & Aluminum Company | Cleveland | OH |
| National Carbon Company | Cleveland | OH |
| NATIONAL CARBON COMPANY – EDGEWATER WORKS | CLEVELAND | OH |
| NATIONAL CARBON COMPANY, DIVISION OF UNION CARBIDE | FOSTORIA | OH |
| NATIONAL CARBON COMPANY, INCORPORATED | EDGEWATER WORKS, CLEVELAND | OH |
| NATIONAL CARBON COMPANY, INCORPORATED | FOSTORIA | OH |
| National Cash Register | Dayton | OH |
| National Cash Register Company | Cambridge | OH |
| National Cash Register Company | Dayton | OH |
| NATIONAL CASH REGISTER CORPORATION – SALES TRAINING CENTER/BUILDING 26 – SOUTH PATTERSON BOULEVARD | DAYTON | OH |
| NATIONAL CASTING | TOLEDO | OH |
| National Casting | Cleveland | OH |
| NATIONAL CASTING CO. | Warren | OH |
| NATIONAL CEMENT PRODUCTS | TOLEDO | OH |
| NATIONAL CEMENT PRODUCTS COMPANY | TOLEDO | OH |
| NATIONAL CHEMICAL COMPANY | CLEVELAND | OH |
| NATIONAL CHEMICAL COMPANY | NEWBURGH | OH |
| NATIONAL DISTILLERS | CINCINNATI | OH |
| National Distillers | Ashtabula | OH |
| NATIONAL DISTILLERS – RESEARCH LAB #2 | CINCINNATI | OH |
| NATIONAL DISTILLERS AND CHEMICAL CORPORATION | CINCINNATI | OH |
| NATIONAL DISTILLERS CORP. – SODIUM PLANT (a/k/a Industrial Chemical) | ASHTABULA | OH |
| NATIONAL DISTILLERS PRODUCTS CORPORATION | CINCINNATI | OH |
| NATIONAL DRILLING MACH COMPANY | BARBERTON | OH |
| NATIONAL DRYWALL, INCORPORATED, 145 OLIVER ST. | AKRON | OH |
| NATIONAL ELECTRIC LAMP COMPANY – OLD BRUSH PLANT | CLEVELAND | OH |
| National Fence Manufacturing Company | Toledo | OH |
| NATIONAL FIRE PROOFING COMPANY | AULTMAN | OH |
| NATIONAL GYPSUM CO | GIBSONBURGH | OH |
| NATIONAL HOME FOR D.UNITED STATES | DAYTON | OH |
| NATIONAL HOME FOR DISABLED VOLUNTEER SOLDIERS | DAYTON | OH |
| NATIONAL LEAD | CINCINNATI | OH |
| NATIONAL LEAD COMPANY | CINCINNATI | OH |
| NATIONAL LIFE INSURANCE COMPANY, 180 E. MCMILLAN ST. | CINCINNATI | OH |
| NATIONAL LIME & STONE CO | CAREY | OH |
| NATIONAL LIME & STONE CO | SPORE | OH |
| NATIONAL LIME AND STONE COMPANY | CAREY | OH |
| NATIONAL LIMESTONE CO | CAREY | OH |
| NATIONAL LINSEED OIL COMPANY | PIQUA | OH |
| NATIONAL MACHINERY CO | TIFFIN | OH |
| National Malleable | Cleveland | OH |
| NATIONAL MALLEABLE CASTINGS COMPANY | TOLEDO | OH |
| NATIONAL METAL | CLEVELAND | OH |
| NATIONAL METAL | WADSWORTH | OH |
| National Military Home | Dayton | OH |
| NATIONAL MILLING COMPANY | TOLEDO | OH |
| NATIONAL MORTAR AND SUPPLY COMPANY | GIBSONBURG | OH |
| National Pipe Insulators | Avon | OH |
| NATIONAL POWER & MACHINERY CO | CLEVELAND | OH |
| NATIONAL POWER MACHINERY COMPANY | CLEVELAND | OH |
| NATIONAL RAY CHEMICAL PLANT | PAINESVILLE | OH |
| NATIONAL RUBBER COMPANY | AKRON | OH |
| National Rubber Machinery | Akron | OH |
| NATIONAL SCREW AND MANUFACTURING COMPANY | CLEVELAND | OH |
| NATIONAL SCREW AND TACK COMPANY | CLEVELAND | OH |
| NATIONAL SCREW MANUFACTURING | CLEVELAND | OH |
| NATIONAL SEAL CO. | VAN WERT | OH |
| NATIONAL SHEET STEEL COMPANY | MANSFIELD | OH |
| National Sinktop | Cincinnati | OH |
| NATIONAL STEEL COMPANY | MINGO JUNCTION | OH |
| NATIONAL STEEL COMPANY | YOUNGSTOWN | OH |
| NATIONAL STEEL COMPANY | BELLAIRE | OH |
| NATIONAL STEEL WORKS | BELLAIRE | OH |
| NATIONAL STOVE COMPANY | LORAIN | OH |
| NATIONAL STOVE COMPANY DIVISION | LORAIN | OH |
| NATIONAL STOVE COMPANY, DANGLER STOVE DIVISION | LORAIN | OH |
| NATIONAL SUPERIOR COMPANY | TOLEDO | OH |
| NATIONAL SUPPLY COMPANY | SPRINGFIELD | OH |
| NATIONAL TIRE AND RUBBBER COMPANY | EAST PALESTINE | OH |
| National Tube | Cleveland | OH |
| National Tube | Lorain | OH |
| NATIONAL TUBE CO. | LORAIN | OH |
| NATIONAL TUBE COMPANY | LORAIN | OH |
| NATIONAL TUBE COMPANY (a/k/a U.S. Steel) – Lorain Works | Lorain | OH |
| NATIONAL TUBE DIV | LORAIN | OH |
| NATIONAL TUBE DIVISION | LORAIN | OH |
| NATIONAL TUBE STEEL MILL | LORAIN | OH |
| NATIONAL UNION BUILDING | TOLEDO | OH |
| NATKIN | MENTOR | 0H |
| NATKIN AND CO | MENTOR | OH |
| Natural Resources Management Plant | Columbiana | OH |
| Naugatuck Chemical (Division of U.S. Rubber Co.) | Painesville | OH |
| NAUGATUCK CHEMICAL CO | PAINESVILLE | OH |
| NAUGATUCK CHEMICAL CO. | PAINESVILLE | OH |
| NCR CORPORATION | DAYTON | OH |
| NEENAH PAPER, INCORPORATED | URBANA | OH |
| NEIL ARMSTRONG BUILDING | WAPAKONETA | OH |
| NEIVESON-WEISKOPT | READING | OH |
| Nelacrest Gardens | Cleveland | OH |
| NELSON DIVISION TRW | LORAIN | OH |
| NELSON FINISHING | CLEVELAND | OH |
| NESTLE CO | MARYSVILLE | OH |
| NESTLE COMPANY, INCORPORATED | SUNBURY | OH |
| NESTLE’S MILK PRODUCTS CO | MARYSVILLE | OH |
| NEW BOSTON COKE | SCIOTO | OH |
| NEW BOSTON COKE CORPORATION | NEW BOSTON | OH |
| NEW DEPARTURE DIVISION, GENERAL MOTORS CORPORATION | SANDUSKY | OH |
| NEW FEDERAL OFFICE BLDG | TOLEDO | OH |
| NEW FIRE STATION | MARBLEHEAD | OH |
| NEW GENERAL OFFICE BUILDING | CINCINNATI | OH |
| NEW IDEA SPREADER COMPANY | COLDWATER | OH |
| NEW JERSEY ZINC COMPANY | ASHTABULA | OH |
| New London Metal | New London | OH |
| NEW MIAMI MIDDLE SCHOOL | HAMILTON | OH |
| NEW PHILADELPHIA SCHOOL | CANTON | OH |
| NEW PHILADELPHIA SCHOOL | NEW PHILADELPHIA | OH |
| NEW PHILADELPHIA WATER WORKS | NEW PHILADELPHIA | OH |
| NEW RICHMOND SCHOOL | NEW RICHMOND | OH |
| NEW ST ANNS HOSPITAL | CLEVELAND | OH |
| NEW TOD AND COMPANY | YOUNGSTOWN | OH |
| NEW WAY LINEN | CINCINNATI | OH |
| NEW YORK CENTRAL RAILROAD | CLEVELAND | OH |
| NEW YORK CENTRAL RAILROAD | COLLINWOOD | OH |
| NEW YORK CENTRAL RAILROAD | COLUMBUS | OH |
| NEW YORK CENTRAL RAILROAD CO; ENGINE TERMINAL POWER PLANT | AIR LINE JUNCTION | OH |
| NEW YORK CENTRAL RAILROAD COMPANY | SHARONVILLE | OH |
| NEW YORK CENTRAL RAILROAD COMPANY | HOBSON | OH |
| NEW YORK CENTRAL RAILROAD, AIRLINE JUNCTION PLANT | TOLEDO | OH |
| NEW YORK CENTRAL RR | ASHTABULA | OH |
| NEW YORK CENTRAL SYSTEM | ASHTABULA | OH |
| NEW YORK CENTRAL SYSTEM | BELLEFONTAINE | OH |
| NEW YORK CENTRAL SYSTEM | CINCINNATI | OH |
| NEW YORK CENTRAL SYSTEM | CLEVELAND | OH |
| NEW YORK P. AND O. DOCK COMPANY | RANDALL | OH |
| NEW YORK RAILROAD | ASHTABULA | OH |
| NEW YORK, CHICAGO AND ST. LOUIS RAILROAD COMPANY | CONNEAUT | OH |
| NEWARK CITY SCHOOLS | NEWARK | OH |
| NEWARK EXTUSION | NEWARK | OH |
| Newark Galvanizing Company | Newark | OH |
| NEWARK GALVANIZING DIV | NEWARK | OH |
| NEWARK STOVE COMPANY | NEWARK | OH |
| NEWARK WATER COMPANY – NEWARK WATERWORKS | NEWARK | OH |
| NEWTON STEEL COMPANY | NEWTON FALLS | OH |
| NICHOLS DRYER COMPANY | NORWOOD | OH |
| NICHOLS ENG. C/O LUBRIGAL | PAINESVILLE | OH |
| Nickel Plate R.R. | Cleveland | OH |
| Nickel Plate R.R. | Conneaut | OH |
| NICKEL PLATE ROAD | CONNEAUT | OH |
| Nicolet Industries | Hamilton | OH |
| Nicolet Industries Inc | Hamilton | OH |
| Nicolet Inoustries Inc | Rockdale | OH |
| NILES BEURESIT PORCH COMPANY | NILES | OH |
| NILES GLASS PLANT | NILES | OH |
| NILES IRON AND SHEET COMPANY | NILES | OH |
| NILES POWER PLANT | NILES | OH |
| Niles Republic | Warren | OH |
| NILES ROLLING MILL COMPANY | NILES | OH |
| NILES TOOL WORKS COMPANY | HAMILTON | OH |
| NILES-BEMENT-POND COMPANY | HAMILTON | OH |
| NITROGEN DIVISION ALLIED CHEMICAL AND DYE CORPORATION | SOUTH POINT | OH |
| NITROGEN PETROCHEMICAL PLANT | LIMA | OH |
| NIVISION-WEISKOPF COMPANY | CINCINNATI | OH |
| NIVISON-WEISKOPT | READING | OH |
| NKP Conneaut Yard | Conneaut | OH |
| NL INDUSTRIES, INC. | TOLEDO | OH |
| NO 1 REFINERY | CLEVELAND | OH |
| Nock Fire Brick Co | Cleveland | OH |
| NOCK FIREBRICK CO., THE | CLEVELAND | OH |
| NORDYKE AND MARMON COMPANY | TOLEDO | OH |
| NORFOLK AND WESTERN RAILROAD COMPANY | COLUMBUS | OH |
| NORFOLK AND WESTERN RAILWAY COMPANY | PORTSMOUTH | OH |
| NORFOLK AND WESTERN RAILWAY COMPANY | COLUMBUS | OH |
| NORFOLK AND WESTERN RR | BELLEVUE | OH |
| NORFOLK SOUTHERN RAILROAD | BELLEVUE | OH |
| NORFOLK SOUTHERN/SOUTHERN SHOPS | NOT PROVIDED | OH |
| NORFOLK WESTERN RAILROAD | PORTSMOUTH | OH |
| NORFOLK WESTERN RAILROAD | LIMA | OH |
| NORFOLK WESTERN RAILROAD | BREWSTER | OH |
| NORFOLK WESTERN RAILROAD | CLEVELAND | OH |
| NORFOLK WESTERN RAILROAD | TOLEDO | OH |
| NORFOLK WESTERN SHOPS | NOT PROVIDED | OH |
| NORTH AMERICAN AVIATION CORP. | COLUMBUS | OH |
| NORTH AMERICAN AVIATION INC – BLDG #8 – BOILER HOUSE | COLUMBUS | OH |
| NORTH AMERICAN LEAD COMPANY | COLUMBUS | OH |
| NORTH AMERICAN MANUFACTURING COMPANY | CLEVELAND | OH |
| NORTH AMERICAN MFG CO | CLEVELA ND | OH |
| NORTH AMERICAN MFG. CO. | CLEVELAND | OH |
| NORTH AMERICAN MFG. COMPANY | CLEVELAND | OH |
| North American Refractories | Ironton | OH |
| North American Refractory | Cleveland | OH |
| NORTH AMERICAN ROCKWELL CORP | COLUMBUS | OH |
| NORTH MONTGOMERY COUNTY I | DAYTON | OH |
| NORTH SIDE HOSPITAL | YOUNGSTOWN | OH |
| NORTH WESTERN OHIO LIGHT COMPANY – LIMA PLANT | LIMA | OH |
| NORTH WESTERN OHIO LIGHT COMPANY – POWER PLANT | DELPHOS | OH |
| Northeast Ohio Reg. Sewer | Cleveland | OH |
| NORTHEAST OHIO REGIONAL SEWER DISTRICT | CUYAHOGA HEIGHTS | OH |
| NORTHERN BOILER | CLEVELAND | OH |
| NORTHERN OHIO SUGAR | FINDLAY | OH |
| NORTHERN OHIO SUGAR | FREMONT | OH |
| NORTHERN OHIO SUGAR COMPANY | FREMONT | OH |
| NORTHERN OHIO SUGAR COMPANY | FINDLAY | OH |
| NORTHERN OHIO SUGAR COMPANY, SUBSIDIARY OF GREAT WESTERN SUGAR COMPANY | FREMONT | OH |
| NORTHERN OHIO TRACTION AND LIGHT COMPANY – AKRON POWER PLANT | AKRON | OH |
| NORTHERN OHIO TRACTION AND LIGHT COMPANY – BEDFORD POWER PLANT | BEDFORD | OH |
| NORTHERN OHIO TRACTION AND LIGHT COMPANY – CANTON POWER PLANT | CANTON | OH |
| NORTHERN OHIO TRACTOR COMPANY | AKRON | OH |
| NORTHERN REFRIGERATING COMPANY | TOLEDO | OH |
| NORTHERN TEXAS TRACTION COMPANY | CLEVELAND | OH |
| NORTHGATE MALL | CINCINNATI | OH |
| NORTHSIDE HOSPITAL | YOUNGSTOWN | OH |
| NORTHSIDE MEDICAL CENTER | YOUNGSTOWN | OH |
| NORTHWEST HIGH SCHOOL – AUDITORIUM | HAMILTON | OH |
| NORTHWEST HIGH SCHOOL – STOUT & PIPPIN ROADS | CINCINNATI | OH |
| NORTHWESTERN RAILROAD | SUMMIT | OH |
| Norton Fabrication Plant | Ravenna | OH |
| NORTON MACHINERY COMPANY | CINCINNATI | OH |
| NORWALK ELEMENTARY SCHOOL | NORWALK | OH |
| NORWALK IRON STEEL COMPANY | NORWALK | OH |
| Norwalk Municipal Light Plant | Norwalk | OH |
| Norweco, Inc. | Norwalk | OH |
| NORWOOD | CINCINNATI | OH |
| NORWOOD HIGH SCHOOL | NORWOOD | OH |
| NORWOOD SASH AND DOOR COMPANY | NORWOOD | OH |
| NOVEON | AKRON | OH |
| NUCKLEY COVERS | CLEVELAND | OH |
| NUCLEAR PLATING | CLEVELAND | OH |
| NUM NUM FOODS INC. | CLEVELAND | OH |
| NUM NUM FOODS, LLC | CLEVELAND | OH |
| NUMBER 9 | WARREN | OH |
| NURSES HOME CITY HOSPITAL | AKRON | OH |
| NUTONE INC. | CINCINNATI | OH |
| NY Central Rail Road Company | Galion | OH |
| O H HUTCHINGS | MIAMISBURG | OHIO |
| O.C. BARBER | AKRON | OH |
| O.C. BARBER | BARBERTON | OH |
| O.H. HUTCHINGS STATION | Miamisburg | OH |
| O.K. COAL INC. | MINERAL CITY | OH |
| O.M. SCOTT AND SONS COMPANY – CHEMICAL PLANT | MARYSVILLE | OH |
| O.S. KELLY COMPANY | SPRINGFIELD | OH |
| OAK HILLS SAVINGS & LOAN | CINCINNATI | OH |
| OAK RUBBER | RAVENNA | OH |
| OAKWOOD BILLETS | NILES | OH |
| Oakwood Country Club – Grill | Cleveland | OH |
| OAKWOOD STREET RAILWAY COMPANY | DAYTON | OH |
| OATEY CO. | CLEVELAND | OH |
| OBEAR NESTER GLASS CO – RECUPERATOR | TOLEDO | OH |
| OBERLE JORDRE COMPANY | ABERDEEN | OH |
| OBERLE JORDRE COMPANY | NEW RICHMOND | OH |
| Oberlin College – Jones Field House | Oberlin | OH |
| OBERLIN COLLEGE – LORAIN COUNTY | OBERLIN | OH |
| OBERLIN ELECTRIC AND HEATING COMPANY – STEAM PLANT | OBERLIN | OH |
| OBERLIN GAS AND ELECTRIC COMPANY – ELECTRIC PLANT | OBERLIN | OH |
| Occidental Chemical Company | Kenton | OH |
| OCCIDENTAL CHEMICAL CORPORATION | KENTON | OH |
| OCCIDENTAL PETROLEUM CORPORATION | KENTON | OH |
| Oglebay Norton Coal Company | St. Clairsville | OH |
| OGLEBAY-NORTON COAL COMPANY | ST. CLAIRSVILLE | OH |
| OGLEBEY NORTON | TOLEDO | OH |
| Oglesby Paper Company, Machine Room Boiler House | Middletown | OH |
| OGLEYBAY | CLEVELAND | OH |
| OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER | WOOSTER | OH |
| OHIO AND TEXAS SUGAR COMPANY | COLUMBUS | OH |
| Ohio Art Company | Bryan | OH |
| OHIO ART FACTORY | BRYAN | OH |
| OHIO ASBESTOS & INSUL CO. | CLEVELAND | OH |
| OHIO ASBESTOS & INSULATION | CLEVELAND | OH |
| Ohio Asbestos & Insulation Company | Cleveland | OH |
| OHIO ASBESTOS COMPANY | CLEVELAND | OH |
| OHIO ASYLUM FOR EPILEPTICS | GALLIPOLIS | OH |
| OHIO BASKING COMPANY | CLEVELAND | OH |
| OHIO BELL | CANTON | OH |
| OHIO BELL STOW | CANTON | OH |
| OHIO BELL TELEPHONE BLDG | CLEVELAND | OH |
| OHIO BOARD OF ADMINISTRATION | COLUMBUS | OH |
| Ohio Box Board | Rittman | OH |
| OHIO BOX BOARD COMPANY | RITTMAN | OH |
| OHIO BOX BOARD COMPANY | CLEVELAND | OH |
| Ohio Boxboard Co. – President’s Office | Rittman | OH |
| Ohio Boxboard Company | Rittman | OH |
| Ohio Brass | Mansfield | OH |
| OHIO BRASS CO | MANSFIELD | OH |
| Ohio Brass Company | Mansfield | OH |
| OHIO BRASS COMPANY | BARBERTON | OH |
| OHIO CARBON | CLEVELAND | OH |
| OHIO CASUALTY INSURANCE CO | HAMILTON | OH |
| OHIO CENTRAL RAILROAD | COLUMBUS | OH |
| OHIO CENTRAL TRACTION | GALION | OH |
| OHIO CEREAL COMPANY | CIRCLEVILLE | OH |
| OHIO CHEMICAL & MFG. CO. | CLEVELAND | OH |
| OHIO CHEMICAL CO | CLEVELAND | OH |
| OHIO CHEMICAL COMPANY | CLEVELAND | OH |
| OHIO CRANKSHAFT | CLEVELAND | OH |
| OHIO CRANKSHAFT | PARK | OH |
| OHIO EDISON | AKRON | OH |
| Ohio Edison – Mad River Power Plant | Springfield | OH |
| Ohio Edison Building | Akron | OH |
| Ohio Edison Co | Youngstown | OH |
| Ohio Edison Co | Lorain | OH |
| Ohio Edison Co | Akron | OH |
| Ohio Edison Co – Dilles Bottom | Shadyside | OH |
| OHIO EDISON CO – Mad River Station | SPRINGFIELD | OH |
| OHIO EDISON CO – W H SAMMIS PLANT | EMPIRE STRATTON | OH |
| OHIO EDISON CO – W H SAMMIS PLANT | STRATTON | OH |
| Ohio Edison Co Mad River Station 3 | Springfield | OH |
| OHIO EDISON CO. | NILES | OH |
| OHIO EDISON CO. | STRATTON | OH |
| OHIO EDISON CO. | TORONTO | OH |
| Ohio Edison Company | Edgewater | OH |
| Ohio Edison Company | Niles | OH |
| Ohio Edison Company | Springfield | OH |
| Ohio Edison Company | Toronto | OH |
| OHIO EDISON COMPANY – EDGEWATER GENERATING STATION | LORAIN | OH |
| OHIO EDISON COMPANY – MAD RIVER PLANT | SPRINGFIELD | OH |
| OHIO EDISON COMPANY – NORWALK POWER PLANT | NORWALK | OH |
| OHIO EDISON COMPANY – R E BURGER PLANT | SHADYSIDE | OH |
| OHIO EDISON COMPANY – R.E. BURGER POWER PLANT | SHADYSIDE | OH |
| OHIO EDISON COMPANY – WARREN SERVICE BUILDING | WARREN | OH |
| Ohio Edison Company- Edgewater Plant | Lorain | OH |
| Ohio Edison Company- Gorge Plant | Akron | OH |
| Ohio Edison Company- R.E. Burger Power Plant | Shadyside | OH |
| OHIO EDISON COMPANY W.H. SAMMIS PLANT, UNIT 6 | STRATTON | OH |
| OHIO EDISON COMPANY, ERIE | BERLIN HEIGHTS | OH |
| OHIO EDISON COMPANY, GORGE STATION | AKRON | OH |
| OHIO EDISON COMPANY, NILES PLANT | NILES | OH |
| OHIO EDISON COMPANY, R.E. BURGER GENERATING STATION | SHADYSIDE | OH |
| OHIO EDISON COMPANY, W.H. SAMMIS GENERATING STATION | STRATTON | OH |
| OHIO EDISON ELECTRIC INSTALLATION COMPANY – MIDDLETOWN CENTRAL STATION | MIDDLETOWN | OH |
| Ohio Edison Power House | Niles | OH |
| Ohio Edison Samis Pt | Stratton | OH |
| Ohio Edison, Sammis Plant, PH | Stratton | OH |
| OHIO EDISON, WESTINGHOUSE TURBINE | STRATTON | OH |
| OHIO EDSION – YOUNGSTOWN POWER PLANT | YOUNGSTOWN | OH |
| OHIO EDUCATION ASSOCIATION | COLUMBUS | OH |
| OHIO ELECTRIC COMPANY / LIMA LIGHT AND POWER COMPANY – LIMA POWER STATION | LIMA | OH |
| OHIO ELECTRIC RAILROAD COMPANY – HEBRON PLANT | HEBRON | OH |
| OHIO ELECTRIC RAILWAY COMPANY – MEDWAY POWER PLANT | MEDWAY | OH |
| OHIO ELECTRIC RAILWAY COMPANY – ROBB STREET SUBSTATION | LIMA | OH |
| OHIO ELECTRIC RAILWAY COMPANY – ZANESVILLE PLANT | ZANESVILLE | OH |
| OHIO EXPO CENTER | COLUMBUS | OH |
| OHIO FERRO | PHILO | OH |
| OHIO FERRO ALLOY | POWHATAN | OH |
| Ohio Ferro Alloys | Powhatan Point | OH |
| Ohio Ferro-Alloys | Ironton | OH |
| OHIO FIREBRICK CO | JACKSON | OH |
| OHIO FORGE AND MACHINE CORPORATION | CLEVELAND | OH |
| OHIO FORGE COMPANY | CLEVELAND | OH |
| Ohio Fuel Gas Company | Columbus | OH |
| Ohio Fuel Gas Company | Mt. Sterling | OH |
| Ohio Fuel Gas Company | Pavonia | OH |
| Ohio Fuel Gas Company | Toledo | OH |
| Ohio Fuel Gas Company | Wellington | OH |
| OHIO FUEL GAS COMPANY – CRAWFORD COMPRESSOR STATION | SUGAR GROVE | OH |
| OHIO FUEL GAS COMPANY – WEAVER COMPRESSOR STATION | Lucas | OH |
| OHIO FUEL SUPPLY COMPANY | COLUMBUS | OH |
| OHIO FUEL SUPPLY COMPANY | SUGAR GROVE | OH |
| Ohio Gasket & Shim | Akron | OH |
| Ohio Hospital For Epileptics | Gallipolis | OH |
| OHIO HOSPITAL FOR EPILEPTICS | SABLIPOLIS | OH |
| OHIO INDUSTRIAL INSULATION CO. | LIMA | OH |
| Ohio Injector Company | Wadsworth | OH |
| OHIO INSTITUTE FOR FEEBLE MINDED YOUTH | COLUMBUS | OH |
| OHIO IRON AND STEEL COMPANY | LOWELLVILLE | OH |
| OHIO IRON COMPANY | ZANESVILLE | OH |
| OHIO LEATHER CO. | GIRARD | OH |
| Ohio Leather Company | Girard | OH |
| OHIO LEATHER COMPANY | WARREN | OH |
| Ohio Light & Power – Newark Power House | NEWARK | OH |
| Ohio Light & Power Company | Findlay | OH |
| OHIO LIGHT AND POWER COMPANY | NEWARK | OH |
| Ohio Malleable | Columbus | OH |
| Ohio Malleable Iron | Columbus | OH |
| Ohio Marble Company | Piqua | OH |
| Ohio Match Company | Wadsworth | OH |
| OHIO MECHANICS INSTITUTE | CINCINNATI | OH |
| OHIO MUNICIPAL POWER PLANT | ST. MARYS | OH |
| OHIO NATIONAL BANK – SOUTH HIGH STREET | COLUMBUS | OH |
| OHIO NATIONAL LIFE INSURANCE CO. | CINCINNATI | OH |
| OHIO NATIONAL LIFE INSURANCE COMPANY | CINCINNATI | OH |
| OHIO NATIONAL PLAZA BUILDING – EAST BROAD STREET | COLUMBUS | OH |
| OHIO NUCLEAR | SOLON | OH |
| OHIO OIL | FINDLAY | OH |
| Ohio Oil Co | Toledo | OH |
| OHIO OIL COMPANY | FINDLAY | OH |
| OHIO OIL COMPANY – POWER BUILDING | FINDLAY | OH |
| OHIO PAPER BAG COMPANY | MIDDLETOWN | OH |
| OHIO PENITENTIARY | COLUMBUS | OH |
| OHIO PIPE & SUPPLY | CLEVELAND | OH |
| OHIO PIPE & SUPPLY COMPANY, INC. | CLEVELAND | OH |
| Ohio Pipeline | Barberton | OH |
| OHIO POWER | CONESVILLE | OH |
| OHIO POWER – CARDINAL POWER PLANT | BRILLIANT | OH |
| OHIO POWER – MUSKINGUM | BEVERLY | OH |
| OHIO POWER – MUSKINGUM #5 | BEVERLY | OH |
| OHIO POWER – MUSKINGUM PLANT | BEVERLY | OH |
| OHIO POWER – MUSKINGUM PLANT | RELIEF | OH |
| OHIO POWER – MUSKINGUM PLANT #5 | BEVERLY | OH |
| OHIO POWER CO | MARIETTA | OH |
| OHIO POWER CO – MUSKINGUM RIVER PLANT | BEVERLY | OH |
| OHIO POWER CO – MUSKINGUM STATION | RELIEF | OH |
| OHIO POWER CO – PHILO GENERATING CIV | PHILO | OH |
| OHIO POWER CO – PHILO GENERATING STATION | PHILO | OH |
| OHIO POWER CO – WOODCOCK PLANT | BLUFFTON | OH |
| Ohio Power Co Cardinal Plant | Brilliant | OH |
| Ohio Power Co. | Brilliant | OH |
| OHIO POWER CO. | BRILLANT | OH |
| OHIO POWER CO. | BEVERLY | OH |
| OHIO POWER CO. | PHILO | OH |
| OHIO POWER CO. – JAMES M. GAVIN POWER PLANT | CHESHIRE | OH |
| Ohio Power Co. – Muskingum River Plant | Relief | OH |
| OHIO POWER COMPANY | PHILO | OH |
| Ohio Power Company | Canton | OH |
| OHIO POWER COMPANY | BLUFFTON | OH |
| OHIO POWER COMPANY | BRILLIANT | OH |
| OHIO POWER COMPANY | CHESHIRE | OH |
| OHIO POWER COMPANY | PHILADELPHIA | OH |
| OHIO POWER COMPANY | RELIEF | OH |
| OHIO POWER COMPANY | WATERFORD | OH |
| OHIO POWER COMPANY | COLUMBUS GROVE | OH |
| OHIO POWER COMPANY – JAMES M. GAVIN POWER PLANT | CHESHIRE | OH |
| OHIO POWER COMPANY – MUSKINGUM RIVER PLANT | RELIEF | OH |
| OHIO POWER COMPANY – PHILO PLANT | PHILO | OH |
| OHIO POWER COMPANY – TIDD PLANT | BRILLIANT | OH |
| Ohio Power Company- Gavin Power Plant | Cheshire | OH |
| Ohio Power Company- Muskingum River Plant | Beverly | OH |
| OHIO POWER COMPANY, BUCKEYE POWER COMPANY | BRILLIANT | OH |
| OHIO POWER COMPANY, CARDINAL PLANT | BRILLIANT | OH |
| OHIO POWER COMPANY, GAVIN PLANT | GAVIN | OH |
| OHIO POWER COMPANY, MUSKINGUM RIVER PLANT | BEVERLY | OH |
| OHIO POWER COMPANY, PHILO PLANT | PHILO | OH |
| OHIO PRODUCTS | CANTON | OH |
| Ohio Public Service Company | Dille | OH |
| Ohio Public Service Company | Lorain | OH |
| Ohio Public Service Company | Warren | OH |
| OHIO PUBLIC SERVICE COMPANY | CLEVELAND | OH |
| OHIO PUBLIC SERVICE COMPANY | SHADYSIDE | OH |
| OHIO PUBLIC SERVICE COMPANY | SANDUSKY | OH |
| OHIO PUBLIC SERVICE COMPANY | MARION | OH |
| OHIO QUARRIES COMPANY | AMHERST | OH |
| OHIO QUARRIES COMPANY | NORTH AMHERST | OH |
| OHIO REFORMATORY FOR WOMEN | MARYSVILLE | OH |
| OHIO RIVER POWER INCORPORATED | DILLES BOTTOM | OH |
| Ohio River Power, Inc. | Dilles Bottom | OH |
| OHIO ROAD PAVING CO | SANDUSKY | OH |
| OHIO RUBBER COMPANY | WILLOUGHBY | OH |
| OHIO SALT COMPANY | WADSWORTH | OH |
| OHIO SALT COMPANY | RITTMAN | OH |
| OHIO SASH AND DOOR COMPANY | CLEVELAND | OH |
| OHIO SEAMLESS TUBE COMPANY | SHELBY | OH |
| OHIO SEAMLESS TUBE DIV | SHELBY | OH |
| OHIO SERVICE | LORAIN | OH |
| OHIO SERVICE COMPANY | COSHOCTON | OH |
| OHIO SERVICE COMPANY | NEW PHILADELPHIA | OH |
| OHIO SOLDIERS AND SAILORS HOME | SANDUSKY | OH |
| OHIO SOLDIERS AND SAILORS ORPHANS HOME | XENIA | OH |
| OHIO STANDARD CHEMICAL COMPANY | SYLVANIA | OH |
| OHIO STATE CHEMICAL COMPANY | SYLVANIA | OH |
| OHIO STATE HIGHWAY PATROL TRAINING ACADEMY – EAST 17TH AVENUE | COLUMBUS | OH |
| OHIO STATE HOSPITAL DEPARTMENT OF PUBLIC WELFARE | LIMA | OH |
| OHIO STATE HOSPITAL FOR EPILEPTICS | GALLIPOLIS | OH |
| OHIO STATE PEN POWER PLT | COLUMBUS | OH |
| OHIO STATE PENITENTIARY | COLUMBUS | OH |
| OHIO STATE POWER COMPANY | BALLVILLE | OH |
| OHIO STATE POWER COMPANY – FREMONT PLANT BY SANDUSKY RIVER | FREMONT | OH |
| OHIO STATE REFORMATORY | MANSFIELD | OH |
| OHIO STATE TRAINING SCHOOL | MARION | OH |
| Ohio State University | Columbus | OH |
| OHIO STATE UNIVERSITY – ACADEMIC BUILDING 4 – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – ALLIED MEDICAL SCIENCE SCHOOL – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – ANIMAL LABORATORY CENTER – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – BOILER HOUSE – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – CENTER FOR TOMORROW – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – CENTRAL SERVICE BUILDING | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – COMPARATIVE MEDICAL – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – ENGINEERING EXPERIMENT STATION – NEIL AVENUE | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – FACILITY FOR THE MENTALLY RETARDED – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – GENERAL COLLEGE LIBRARY III | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – GENERAL COLLEGE LIBRARY III – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – GRADUATE SWIMMING POOL – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – HEALTH SCIENCES LIBRARY – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – HORTICULTURE & FORESTRY BUILDING – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – LAZENBY HALL – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – MARRIED STUDENTS HOUSING – MILL STREET | ATHENS | OH |
| OHIO STATE UNIVERSITY – MEDICAL BASIC SCIENCE – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – MENS DORMITORY 5 | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – MENS HOUSING DORMS 1 & 2 | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – MORRILL & LINCOLN TOWER – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – MORVILLE TOWER – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER | WOOSTER | OH |
| OHIO STATE UNIVERSITY – RIVER UNION & DRAMA FACILITY – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – STUDENT HOUSING BLDG 10 | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – TAYLOR TOWER – FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY – UNIVERSITY HOSPITAL – FRANKLIN COUNTY | COLUMBUS | OH |
| Ohio State University Boiler House | Columbus | OH |
| OHIO STATE UNIVERSITY, ANIMAL LABORATORY CENTER, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, BOILER HOUSE, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, CENTER FOR TOMORROW, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, COMPARATIVE MEDICAL, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, FACILITY FOR THE MENTALLY RETARDED, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, GRADUATE SWIMMING POOL, FRANKLIN COUNTY | COLUMBUS | OH |
| Ohio State University, Handball Courts | Columbus | OH |
| OHIO STATE UNIVERSITY, HEALTH SCIENCES LIBRARY, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, HORTICULTURE & FORESTRY BUILDING, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, LAZENBY HALL, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, MARRIED STUDENTS HOUSING, MILL ST. | ATHENS | OH |
| OHIO STATE UNIVERSITY, MEDICAL BASIC SCIENCE BUILDING | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, MEDICAL BASIC SCIENCE, FRANKLIN COUNTY | COLUMBUS | OH |
| Ohio State University, Mershon Auditorium | Columbus | OH |
| OHIO STATE UNIVERSITY, MORRILL & LINCOLN TOWER, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, MORVILLE TOWER, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, RESEARCH SPACE | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, RIVER UNION & DRAMA FACILITY, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, SCHOOL OF NURSING | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, TAYLOR TOWER, FRANKLIN COUNTY | COLUMBUS | OH |
| OHIO STATE UNIVERSITY, UNIVERSITY HOSPITAL, FRANKLIN COUNTY | COLUMBUS | OH |
| Ohio State Universtiy | Athens | OH |
| OHIO STEEL COMPANY | YOUNGSTOWN | OH |
| OHIO STEEL FOUNDRY | SPRINGFIELD | OH |
| Ohio Steel Foundry | Lima | OH |
| OHIO STEEL FOUNDRY (a/k/a Teledyne Ohio Steel) | LIMA | OH |
| OHIO STEEL FOUNDRY COMPANY | SPRINGFIELD | OH |
| OHIO STEEL FOUNDRY COMPANY | CLEVELAND | OH |
| OHIO STEEL FOUNDRY COMPANY | LIMA | OH |
| OHIO STEEL WORKS AND FURNACE | YOUNGSTOWN | OH |
| Ohio Stove Company | Portsmouth | OH |
| OHIO STRAW BOARD COMPANY | URBANA | OH |
| OHIO SUGAR COMPANY | OTTAWA | OH |
| OHIO TAR & ASPHALT | CANTON | OH |
| OHIO TAR & ASPHALT | MASSILLON | OH |
| Ohio Theatre | Marcus Loew | OH |
| Ohio Transmission & Pump | Columbus | OH |
| Ohio University | Athens | OH |
| OHIO UTILITIES COMPANY – POWER PLANT | CIRCLEVILLE | OH |
| OHIO VALLEY ELECTRIC | CHESHIRE | OH |
| Ohio Valley Electric Corp. | Cheshire | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – TURBINE 3 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – UNIT 1 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – UNIT 2 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – UNIT 3 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – UNIT 4 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – KYGER CREEK STATION – UNIT 5 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – TURBINE #3 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #1 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #2 | KANAUGA | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #2 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #3 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #4 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORP. – UNIT #5 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION – UNIT 1 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION – UNIT 2 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION – UNIT 3 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION – UNIT 4 | CHESHIRE | OH |
| OHIO VALLEY ELECTRIC CORPORATION – KYGER CREEK STATION – UNIT 5 | CHESHIRE | OH |
| OHIO VALLEY PROJECT | MADISON | OH |
| OHIO WORKS | YOUNGSTOWN | OH |
| OLD MILL WHSE | WOODLAWN | OH |
| OLD TRIAL SCHOOL | CANTON | OH |
| Olin Aluminum | Hannibal | OH |
| Olin Corporation | Ashtabula | OH |
| Olin Matheson/Ormet/Conalco | HANNIBAL | OH |
| OLIN MATHIESON | HANNIBAL | OH |
| Olin Mathieson | Cleveland | OH |
| OLIN MATHIESON | ASHTABULA | OH |
| Olin Mathieson Aluminum | Clarington | OH |
| OLIN MATHIESON CHEMICAL | OMAL | OH |
| OLIN MATHIESON CHEMICAL | HANNIBAL | OH |
| OLIN MATHIESON CHEMICAL | ASHTABULA | OH |
| OLIN MATHIESON CORP | ASHTABULA | OH |
| OLIN-MATHIESON CHEMICAL CORP. | OMAR | OH |
| OMEGO INDUCTION SERV. | NILES | OH |
| ONE NATIONWIDE PLAZA BUILDING | COLUMBUS | OH |
| OPER. DIVISION | CLEVELAND | OH |
| ORANGE MIDDLE SCHOOL | MORELAND HILL | OH |
| ORANGE MIDDLE SCHOOL | MORELAND HILLS | OH |
| ORANGE SCHOOL | CLEVELAND | OH |
| ORANGEBURG MANUFACTURING | RAVENNA | OH |
| ORDNANCE PLANT | RAVENNA | OH |
| ORIENT STATE INSTITUTE | ORIENT | OH |
| ORION POWER HOLDINGS INCORPORATED | AVON LAKE | OH |
| ORION POWER HOLDINGS INCORPORATED | NILES | OH |
| ORLANDO BAKERY | CLEVELAND | OH |
| Ormet | HANNIBAL | OH |
| ORMET ALUMINUM | HANNIBAL | OH |
| Ormet Aluminum Plant | Hannibal | OH |
| ORMET CORP | UMAL | OH |
| ORMET CORP | HANNIBAL | OH |
| ORMET CORP | OMAL | OH |
| Ormet Corporation | Hannibal | OH |
| ORMET PLANT | HANNIBAL | OH |
| ORPET CORP | HANNIBAL | OH |
| ORR FELT AND BLANKET COMPANY | PIQUA | OH |
| ORRVILLE MILK CONDENSING COMPANY | ORRVILLE | OH |
| ORRVILLE MUNICIPAL LIGHT PLANT | ORRVILLE | OH |
| ORRVILLE MUNICIPAL POWER PLANT | ORRVILLE | OH |
| ORRVILLE MUNICIPAL UTILITIES – STEAM GENERATING UNIT 13 | ORRVILLE | OH |
| ORVILLE POWERHOUSE | ORRVILLE | OH |
| OSBORN BROTHERS | MENTOR | OH |
| OSBORN ENGINEERING COMPANY | CLEVELAND | OH |
| OSBORN MFG. | CLEVELAND | OH |
| OSCAR MAYER & COMPANY | DAVENPORT | OH |
| OSNABURG TOWNSHIP SCHOOL | CANTON | OH |
| OSTER CO | WICKLIFFE | OH |
| OSTER ELECTRIC | CLEVELAND | OH |
| OSTER MANUFACTURING COMPANY | CLEVELAND | OH |
| OSTER MANUFACTURING COMPANY | WICKLIFFE | OH |
| OSTER MFG | WISKLIFFE | OH |
| OTIS STEEL COMPANY | CLEVELAND | OH |
| OTIS STEEL DIVISION, JONES AND LAUGHLIN STEEL COMPANY | CLEVELAND | OH |
| Otis Stell Company | Cleveland | OH |
| Ottawa Chem Division | Toledo | OH |
| OTTAWA CHEMICAL | TOLEDO | OH |
| OTTAWA SUGAR COMPANY | OTTAWA | OH |
| OUR LADY OF MERCY HOSPITAL | MARIEMONT | OH |
| OUR LADY OF MERCY HOSPITAL – KITCHEN | CINCINNATI | OH |
| OUR LADY OF MERCY HOSPITAL – XRAY DEPARTMENT | CINCINNATI | OH |
| Overall Paint and Lead Co. | Cleveland/Bedford | OH |
| OVERSEAS PACKING, INC. | CLEVELAND | OH |
| OWEN MATHIESON CHEMICAL CORP | OMAL | OH |
| OWEN TIRE AND RUBBER COMPANY | BEDFORD | OH |
| OWENS – CORNING | NEWARK | OH |
| OWENS – ILLINOIS | COLUMBUS | OH |
| Owens Corning | Newark | OH |
| Owens Corning | Oxford | OH |
| OWENS CORNING FIBER GLASS CO. | GRANVILLE | OH |
| Owens Corning Fiberglas | Newark | OH |
| Owens Corning Fiberglas Corp | Granville | OH |
| OWENS CORNING FIBERGLAS CORPORATION | NEWARK | OH |
| OWENS CORNING FIBERGLAS CORPORATION | KENTON | OH |
| OWENS CORNING FIBERGLAS CORPORATION | CINCINNATI | OH |
| OWENS CORNING FIBERGLASS | CINCINNATI | OH |
| OWENS CORNING FIBERGLASS | TOLEDO | OH |
| Owens Corning Fiberglass Corp. | Cincinnati | OH |
| OWENS CORNING FIBERGLASS CORPORATION | NEWARK | OH |
| OWENS CORNING GLASS COMPANY | NEWARK | OH |
| OWENS ILLINOIS | TOLEDO | OH |
| OWENS ILLINOIS | PERRYSBURG | OH |
| OWENS ILLINOIS DEVELOPMENT CENTER | TOLEDO | OH |
| Owens Illinois Glass | Toledo | OH |
| Owens Illinois Glass Company | Columbus | OH |
| OWENS ILLINOIS GLASS COMPANY | TOLEDO | OH |
| OWENS ILLINOIS GLASS COMPANY – LIBBEY GLASS DIVISION | TOLEDO | OH |
| OWENS ILLINOIS GLASS COMPANY – TECHNICAL CENTER | TOLEDO | OH |
| OWENS ILLINOIS INC | TOLEDO | OH |
| OWENS ILLINOIS INCORPORATED | TOLEDO | OH |
| OWENS ILLINOIS PAPER | JAITE | OH |
| Owens Illinois Research/Tech Center | Toledo | OH |
| Owens Illinois Technical Center | Toledo | OH |
| OWENS-CORNING FIBERGLAS | CINCINNATI | OH |
| OWENS-CORNING FIBERGLAS C | GRANVILLE | OH |
| OWENS-CORNING FIBERGLAS CORP. | EVENDALE | OH |
| OWENS-CORNING FIBERGLAS CORP. | GRANVILLE | OH |
| OWENS-CORNING FIBERGLAS CORP. | CINCINNATI | OH |
| Owens-Ford Co | Toledo | OH |
| OWENS-ILLINOIS | TOLEDO | OH |
| Owens-Illinois | Columbus | OH |
| Owens-Illinois | Sayreville | OH |
| OWENS-ILLINOIS GLASS CO | PERRYSBURG | OH |
| OWENS-ILLINOIS GLASS CO | COLUMBUS | OH |
| OWENS-ILLINOIS GLASS CO – LIBBEY GLASS | TOLEDO | OH |
| OWENS-ILLINOIS GLASS COMPANY | TOLEDO | OH |
| OWENS-ILLINOIS GLASS COMPANY – LIBBEY GLASS | TOLEDO | OH |
| OXFORD MIAMI PAPER COMPANY | CARROLTON | OH |
| OXFORD PAPER CO | WEST CARROLLTON | OH |
| OXFORD PAPER COMPANY | BARBERTON | OH |
| Oxo Chemical | Haverhill | OH |
| OXYCHEM/OCCIDENTAL CHEMICAL CORPORATION | KENTON | OH |
| P & G | CINCINNATI | OH |
| P. & G. BUILDING | CINCINNATI | OH |
| P. HUBERTY | CLEVELAND | OH |
| P. LORILLARD COMPANY | MIDDLETOWN | OH |
| P. R. SUSSMAN COMPANY | TOLEDO | OH |
| P. WAYDEN SADDLERY HARDWARE COMPANY | COLUMBUS | OH |
| P.J. SORG BRANCH | MIDDLETOWN | OH |
| P.J. SORG COMPANY | MIDDLETOWN | OH |
| P.P. MAST AND COMPANY | SPRINGFIELD | OH |
| P.P.G. INDUSTRIES, INCORPORATED | CIRCLEVILLE | OH |
| P.R. MITCHELL COMPANY | CINCINNATI | OH |
| PACIFIC RAILROAD WESTERN LINES | CRESTLINE | OH |
| PACIFIC RAILROAD WESTERN LINES | MINGO JUNCTION | OH |
| PACIFIC RAILROAD WESTERN LINES | MOSIER | OH |
| PACIFIC RAILROAD WESTERN LINES | WELLSVILLE | OH |
| Packaging Corporation | Rittman | OH |
| Packaging Corporation of America | Rittman | OH |
| PACKAGING CORPORATION OF AMERICA | PITTMAN | OH |
| PACKAGING CORPORATION OF AMERICA – OHIO BOXBOARD DIVISION | RITTMAN | OH |
| Packard Electric | Warren | OH |
| PACKARD ELECTRIC COMPANY – PACKARD ELECTRIC INDUSTRIAL COMPLEX | WARREN | OH |
| PACKARD ELECTRIC COMPANY – PACKARD ELECTRIC INDUSTRIAL COMPLEX – PLANT 10 | WARREN | OH |
| Packard Garage | Cleveland | OH |
| PAGE MILK CO | WHITEHOUSE | OH |
| Page Plastics Company | Woodlawn | OH |
| PAIGE TUBE COMPANY | WARREN | OH |
| PAINESVILLE MUNICIPAL ELECTRIC PLANT | PAINESVILLE | OH |
| PAINESVILLE MUNICIPAL LIGHT PLANT | PAINESVILLE | OH |
| PAINESVILLE MUNICIPAL WATER TREATMENT PLANT | MENTOR | OH |
| PALMER MILLING COMPANY | MIDDLETON | OH |
| Pantasote Chemical | Point Pleasant | OH |
| PARENT PAPER COMPANY | MIDDLETOWN | OH |
| PARK – OHIO | CLEVELAND | OH |
| PARK DROP FORGE | CLEVELAND | OH |
| Park Drop Forge (aka Ohio Crankshaft) | Cleveland | OH |
| Park Drop Forge (aka Ohio Crankshaft) | Newburgh Hts | OH |
| PARK DROP FORGE COMPANY | CLEVELAND | OH |
| Park Ohio Industries | Cleveland | OH |
| PARKER ALLIANCE COMPANY | CLEVELAND | OH |
| Parker Drywall | Akron | OH |
| PARKER HANNIFIN CORPORATION | GREEN CAMP | OH |
| Parker-Fallis Insulation Co Inc | Cleveland | OH |
| PARKERSBURG, MARIETTA AND INTERURBAN RAILWAY COMPANY | MARIETTA | OH |
| PARKVIEW FEDERAL SAVINGS & LOAN CO. | SHAKER HEIGHTS | OH |
| PARKVIEW FEDERAL SAVINGS & LOAN COMPANY | SHAKER HEIGHTS | OH |
| PARMA SENIOR HIGH SCHOOL | PARMA | OH |
| PARSONS ELEMENTARY SCHOOL | COLUMBUS | OH |
| PASQUALE`S PIZZA – 3537 WARSAW | CINCINNATI | OH |
| PATHEON PHARMACEUTICALS | CINCINNATI | OH |
| PAUL A. SORG PAPER COMPANY | MIDDLETOWN | OH |
| PAUL HENRY ICE PLANT | BARBERTON | OH |
| Paul Moore Contracting | Ironton | OH |
| PAUL STEWART AND COMPANY | CINCINNATI | OH |
| PAULIN CO. | CLEVELAND | OH |
| PCS CORPORATION/B.P. CHEMICALS | LIMA | OH |
| PEABODY COAL COMPANY | NEW LEXINGTON | OH |
| PEACOCK COAL COMPANY | POMEROY | OH |
| PEARL OIL COMPANY | BOWLING GREEN | OH |
| PEAUT ANN SHEET AND TIN PLATE COMPANY | MARTINS FERRY | OH |
| PECK-ANDERSON AND PECK COMPANY | CINCINNATI | OH |
| PECKHAM COAL AND ICE COMPANY | DAYTON | OH |
| PEEBLES PAVING BRICK COMPANY | PORTSMOUTH | OH |
| PEERLESS DRAWN STEEL COMPANY | MASSILLON | OH |
| PEERLESS MOTOR CAR COMPANY | CLEVELAND | OH |
| PEERLESS PACKING COMPANY | CLEVELAND | OH |
| PENINSULAR PORTLAND CEMENT | PAULDING | OH |
| PENN – VIRGINIA MATERIAL | EASTLAKE | OH |
| PENN CENTRAL | CLEVELAND | OH |
| PENN CENTRAL | ASHTABULA | OH |
| Penn Centrals Avon Yards | Columbus | OH |
| PENN IRON AND COAL COMPANY | CANAL DOVER | OH |
| PENN SHOVEL COMPANY | WARREN | OH |
| PENN-OHIO CO | NEW PHILADELPHIA | OH |
| PENN-OHIO COAL COMPANY | NEW PHILADELPHIA | OH |
| PENNSYLVANIA AND LAKE ERIE DOCK COMPANY | FAIRPORT HARBOR | OH |
| PENNSYLVANIA AND MAHONING VALLEY RAILROAD | YOUNGSTOWN | OH |
| PENNSYLVANIA AND MAHONING VALLEY RAILWAY COMPANY | YOUNGSTOWN | OH |
| PENNSYLVANIA AND OHIO RAILWAY | ASHTABULA | OH |
| PENNSYLVANIA COMPANY | ASHTABULA | OH |
| PENNSYLVANIA COMPANY | CLEVELAND | OH |
| Pennsylvania Railroad | Columbus | OH |
| PENNSYLVANIA RAILROAD – JAMES ROAD TEAM TRACK – WEST GREEN DORMITORY | COLUMBUS | OH |
| PENNSYLVANIA RAILROAD – JAMES ROAD TEAM TRACK – WHITSTONE HIGH SCHOOL | COLUMBUS | OH |
| PENNSYLVANIA RAILROAD COMPANY | CLEVELAND | OH |
| PENNSYLVANIA RAILROAD COMPANY | SANDUSKY | OH |
| Pennsylvania Railroad Company | Columbia | OH |
| PENNSYLVANIA RAILROAD LINES, WEST OF PITTSBURGH | ASHTABULA | OH |
| PENNSYLVANIA-OHIO ELECTRIC COMPANY – LOUISVILLE POWER GENERATING STATION | LOUISVILLE | OH |
| PENNSYLVANIA-OHIO ELECTRIC COMPANY – LOWELLVILLE POWER PLANT | LOWELLVILLE | OH |
| Penrod Drywall | Columbus | OH |
| PENTAIR | DAYTON | OH |
| PENTAIR, INC. | ASHLAND | OH |
| PENTZ DESIGN | CLEVELAND | OH |
| PEOPLES HOSPITAL | AKRON | OH |
| Peoples Lumber Co | Salem | OH |
| PEOPLES PACKING COMPANY | CLEVELAND | OH |
| PEOPLES RAILWAY COMPANY | DAYTON | OH |
| Pepsi Cola Bottling Company | Cincinnati | OH |
| PERCY MIDDLE SCHOOL – WORTHINGTON BOARD OF EDUCATION – FRANKLIN COUNTY | WORTHINGTON | OH |
| PERCY MIDDLE SCHOOL, WORTHINGTON BOARD OF EDUCATION, FRANKLIN COUNTY | WORTHINGTON | OH |
| PERFECTION AMERICAN | HARVEY | OH |
| Perfection Industries | Cleveland | OH |
| PERFECTION LAUNDRY COMPANY | SPRINGFIELD | OH |
| PERFECTION STOVE COMPANY | CLEVELAND | OH |
| PERFECTION STOVE CORPORATION (a/k/a Hupp Corp.) | CLEVELAND | OH |
| PERMA WELDING COMPANY | CLEVELAND | OH |
| Permaglass Inc | Millbury | OH |
| PERMOLD CORP. | MEDINA | OH |
| PERMOLD INC. | MEDINA | OH |
| PERRY & DERRICK COMPANY | NORWOOD | OH |
| PERRY FAY MANUFACTURING COMPANY | ELYRIA | OH |
| PERRY NUCLEAR POWER PLANT | PERRY | OH |
| PERRY PAYNE COMPANY | CLEVELAND | OH |
| PERSTORP POLYOLS INCORPORATED | TOLEDO | OH |
| PERUNA DRUG MANUFACTURING COMPANY | COLUMBUS | OH |
| PESCO PRODUCTS COMPANY | PERRY | OH |
| PESCO PRODUCTS DIVISION OF BORG WARNER CORP. | BEDFORD | OH |
| PET INC | COLDWATER | OH |
| PET MILK COMPANY | BRYAN | OH |
| PETER KIEWIT & SONS CO – PROCUREMENT DIVISION | TEAYS | OH |
| PETER KIEWIT SONS CO. | TEAYS | OH |
| PETERS CARTRIDGE COMPANY | CINCINNATI | OH |
| PETERS CARTRIDGE COMPANY | KINGS MILLS | OH |
| PETERS DASH COMPANY | COLUMBUS | OH |
| PETTIBONE OHIO | CLEVELAND | OH |
| PFAUDLER COMPANY | ELYRIA | OH |
| PFAUDLER, INC. | ELYRIA | OH |
| PFIZER INC. | GIBSONBURG | OH |
| PHARIS TIRE AND RUBBER COMPANY | NEWARK | OH |
| Phelps Apartments | Cincinnati | OH |
| PHIL – MAR CORP. | CLEVELAND | OH |
| PHILADELPHIA APARTMENTS | CINCINNATI | OH |
| PHILADELPHIA RUBBER WORKS COMPANY | AKRON | OH |
| Philip Carey Co. | Lockland | OH |
| Philip Carey Corp. | Lockland | OH |
| PHILIP CAREY MANUFACTURING COMPANY | LOCKLAND | OH |
| Philip Sporn | Gallipolis | OH |
| PHILLIP MANGO CO. | CLEVELAND | OH |
| PHILLIPS PETROLEUM – 255 MILLARD | TOLEDO | OH |
| PHILLIPS PETROLEUM COMPANY – TOLEDO PHILBLOCK PLANT | TOLEDO | OH |
| PHILLIPS PETROLEUM CO. | TOLEDO | OH |
| PHILLIPS PETROLEUM, 255 MILLARD | TOLEDO | OH |
| Philo Power Plant | Zanesville | OH |
| Phipps A J Co | Canton | OH |
| Phoenix Electric | Youngstown | OH |
| Phoenix Electrical Polson Rubber | Garrettsville | OH |
| PHS ST. MICHAELS | CLEVELAND | OH |
| PICKANDS MATHER AND COMPANY | CLEVELAND | OH |
| Pickaway Power Station | Columbus | OH |
| PICTET ICE COMPANY | CLEVELAND | OH |
| PIEZOEELECTRIC DIV | BEDFORD | OH |
| PIEZOELECTRIC DIVISION | BEDFORD | OH |
| PILOT CHEMICAL | CINCINNATI | OH |
| PILOT CHEMICAL | LOCKLAND | OH |
| PILOT PIPING – 606 SHEPHERD DRIVE | CINCINNATI | OH |
| PINEGROVE TOWNSHIP HIGH SCHOOL | PINEGROVE TOWNSHIP | OH |
| PINEGROVE TWP SCHOOL | CANTON | OH |
| PINNEO AND DANIELS | DAYTON | OH |
| PINNEO AND DANIELS COMPANY | DAYTON | OH |
| PIPING CONTRACTORS | COLUMBUS | OH |
| PIQUA EDISON ELECTRIC ILLUMINATING COMPANY – POWER HOUSE | PIQUA | OH |
| PIQUA ELECTRIC COMPANY – POWER PLANT | PIQUA | OH |
| PIQUA MEMORIAL HOSPITAL | PIQUA | OH |
| PIQUA MUNICIPAL POWER PLANT | PIQUA | OH |
| Piqua Stone Production Company | Piqua | OH |
| PIQUA STRAW BOARD COMPANY | TIPPECANOE CITY | OH |
| PIQUA STREET RAILWAY COMPANY | PIQUA | OH |
| PITTSBURG COAL PLATE GLASS | CRESTLINE | OH |
| PITTSBURG COKE AND CHEMICAL COMPANY, STRUTHER FURNACE DIVISION | STRUTHERS | OH |
| PITTSBURG PLATE GLASS COMPANY | CINCINNATI | OH |
| PITTSBURGH AND CONNEAUT DOCK COMPANY | ASHTABULA HARBOR | OH |
| PITTSBURGH AND CONNEAUT DOCK COMPANY | CONNEAUT HARBOR | OH |
| PITTSBURGH AND CONNEAUT DOCK COMPANY | CONNEAUT | OH |
| PITTSBURGH COKE & CHEM CO | STRUTHERS | OH |
| PITTSBURGH FLEET | CLEVELAND | OH |
| PITTSBURGH FLEET SS PALMER | CLEVELAND | OH |
| PITTSBURGH FLEET SS PALMER SS ROBERTS | CLEVELAND | OH |
| PITTSBURGH FLEET SS ROBERTS | CLEVELAND | OH |
| PITTSBURGH PLATE | CRESTLINE | OH |
| Pittsburgh Plate & Glass | Barberton | OH |
| PITTSBURGH PLATE GLASS | MOUNT VERNON | OH |
| PITTSBURGH PLATE GLASS | CRESTLINE | OH |
| PITTSBURGH PLATE GLASS | MT. VERNON | OH |
| PITTSBURGH PLATE GLASS | BARBERTON | OH |
| PITTSBURGH PLATE GLASS | CANTON | OH |
| PITTSBURGH PLATE GLASS – CHEMICAL DIVISION | CANTON | OH |
| PITTSBURGH PLATE GLASS CO | CANTON | OH |
| PITTSBURGH PLATE GLASS CO | CIRCLEVILLE | OH |
| PITTSBURGH PLATE GLASS CO – CHEM DIVISION | CANTON | OH |
| PITTSBURGH PLATE GLASS CO – CHEMICAL DIVISION | BARBERTON | OH |
| PITTSBURGH PLATE GLASS COMPANY | ZANESVILLE | OH |
| PITTSBURGH PLATE GLASS COMPANY | CRESTLINE | OH |
| PITTSBURGH PLATE GLASS COMPANY | ARCHEVILLE | OH |
| PITTSBURGH PLATE GLASS COMPANY | PORT DEVENS | OH |
| PITTSBURGH PLATE GLASS COMPANY | VERNON | OH |
| PITTSBURGH PLATE GLASS COMPANY | BARBERTON | OH |
| PITTSBURGH PLATE GLASS COMPANY | MT. VERNON | OH |
| PITTSBURGH PLATE GLASS COMPANY, COLUMBIA CHEMICAL DIVISION | BARBERTON | OH |
| PITTSBURGH VALVE AND FITTING COMPANY | BARBERTON | OH |
| Pittsburgh Valve Company | Reedsville | OH |
| PITTSBURGH, CINCINNATI, CHICAGO AND ST. LOUIS RAILROAD | COLUMBUS | OH |
| PITTSBURGH, CINCINNATI, CHICAGO AND ST. LOUIS RAILROAD | DENNISON | OH |
| PITTSBURGH, CINCINNATI, CHICAGO AND ST. LOUIS RAILROAD | BRADFORD | OH |
| Pittsburgh-Des Moines Steel Co. | Cleveland | OH |
| PJ SOR AND COMPANY | MIDDLETOWN | OH |
| PLAIN DEALER PUBLISHING COMPANY | CLEVELAND | OH |
| PLASKOLITE | COLUMBUS | OH |
| PLASTECH H&P DIE & STAMPING | BROOKLYN | OH |
| PLASTER PROCESS CASTING | CLEVELAND | OH |
| PLASTER PROCESS CASTINGS | CLEVELAND | OH |
| PLASTICS AND COAL CHEMICALS DIVISION, ALLIED CHEMICAL AND DYE CORPORATION | STRUTHERS | OH |
| PLASTICS AND COAL CHEMICALS DIVISION, ALLIED CHEMICAL AND DYE CORPORATION | YOUNGSTOWN | OH |
| Plastics Moulding Corporation | Cincinnati | OH |
| PLASTONICS | AVON LAKE | OH |
| PLATT IRON WORKS | DAYTON | OH |
| PLEASANT RUN SCHOOL – 11770 PIPPIN ROAD | CINCINNATI | OH |
| PLECHATY CO | CLEVELAND | OH |
| Plibrico | Dayton | OH |
| PLIBRICO INC | COLUMBUS | OH |
| PLIBRICO SALES & SERVICE CO | COLUMBUS | OH |
| Plibrico Sales & Services | Toledo | OH |
| PLM | CLEVELAND | OH |
| PLUM RUN SIDING | ADAMS COUNTY | OH |
| Plumbrook Station | Sandusky | OH |
| PLYMER PLANT, GLIDDEN COMPANY | HURON | OH |
| Plymouth Industries | Plymouth | OH |
| Plymouth Locomotive Works | Plymouth | OH |
| PMC INCORPORATED | CINCINNATI | OH |
| PMC SPECIALTIES INCORPORATED | CINCINNATI | OH |
| POGUES WAREHOUSE | FAIRFAX | OH |
| POGULS TRI-COUNTY SHOPPING CENTER – PRINCETON PARK | CINCINNATI | OH |
| Poling & Bacon Const Co | Youngstown | OH |
| Pollak Steel | Marion | OH |
| POLLAK STEEL COMPANY | CINCINNATI | OH |
| POLLOCK – BECKER COMPANY | ASHTABULA HARBOR | OH |
| Polson Rubber Company | Barrettsville | OH |
| Polson Rubber Company | Garrettsville | OH |
| Polysar Rubber Service | Barberton | OH |
| POMEROY SALT ASSOCIATION | POMEROY | OH |
| POMEROY SALT ASSOCIATION COMPANY | POMEROY | OH |
| POOR & COMPANY | CANTON | OH |
| POPE TIN PLATE COMPANY | STEUBENVILLE | OH |
| PORO INCORPORATED | BEREA | OH |
| Port Lawrence Co. | Toledo | OH |
| PORT PLASTICS PLANT | ADDYSTON | OH |
| PORTAGE HOTEL COMPANY | AKRON | OH |
| PORTAGE MACHINE COMPANY | AKRON | OH |
| PORTAGE RUBBER COMPANY | BARBERTON | OH |
| PORTAGE STRAW BOARD COMPANY | AKRON | OH |
| Porter Drywall | Gallipolis | OH |
| PORTER STEEL TREATING | CLEVELAND | OH |
| PORTLAND MACHINERY COMPANY | PORTLAND | OH |
| PORTSMOUTH GASEOUS DIFFUSION PLANT | PIKETON | OH |
| PORTSMOUTH SOLVAY COKE COMPANY | PORTSMOUTH | OH |
| PORTSMOUTH STEEL COMPANY | PORTSMOUTH | OH |
| Portsmouth Steel Mill | Portsmouth | OH |
| PORTSMOUTH STREET RAILROAD AND LIGHT COMPANY – POWER PLANT | NEW BOSTON | OH |
| PORTSMOUTH WORKS | NEW BOSTON | OH |
| POST PUBLISHING COMPANY | CINCINNATI | OH |
| Poston Station Power Plant | Nelsonville | OH |
| POTTER INDUSTRIES | CLEVELAND | OH |
| POTTER`S SHOE STORE | CINCINNATI | OH |
| Power & Light Co. | Dayton | OH |
| POWER BUILDING COMPANY | CINCINNATI | OH |
| POWER HOUSE | WOOSTER | OH |
| POWER HOUSE BOARD OF AFFAIRS | ORRVILLE | OH |
| POWER REACTOR PLANT | TOLEDO | OH |
| PPG | Barberton | OH |
| PPG INDUSTRIES | CRESTLINE | OH |
| PPG INDUSTRIES | MT. VERNON | OH |
| PPG INDUSTRIES | BARBERTON | OH |
| PPG INDUSTRIES | CIRCLEVILLE | OH |
| PPG INDUSTRIES | CRESTLING | OH |
| PPG INDUSTRIES | MT VERNON | OH |
| PPG INDUSTRIES INC | BARBERTON | OH |
| PPG INDUSTRIES INC | MOUNT VERNON | OH |
| Ppg Industries Inc | Crestline | OH |
| PPG INDUSTRIES INCORPORATED | CIRCLEVILLE | OH |
| PPG INDUSTRIES PLANT | BARBERTON | OH |
| PPG INDUSTRIES* | MOUNT VERNON | OH |
| PPG Industries, Inc. | Barberton | OH |
| PR MACHINE WORKS | MANSFIELD | OH |
| PRAIRIE STATES PAPER COMPANY | MIDDLETOWN | OH |
| PRECISION CASTING | CLEVELAND | OH |
| PRECISION CASTING CO | CLEVELAND | OH |
| Precision Castings | Cleveland | OH |
| PRECISION METAL | CLEVELAND | OH |
| PREMARK INTERNATIONAL | TROY | OH |
| PREMIER HEALTH PARTNERS | DAYTON | OH |
| PREMIER INDUSTRIES | CLEVELAND | OH |
| PREMIER RUBBER COMPANY | DAYTON | OH |
| PRESSED BRICK COMPANY | DAYTON | OH |
| PRESSING AND ORR COMPANY | CIRCLEVILLE | OH |
| PRESTATITE INTERNATIONAL CORP. – TOLEDO MARINE TERMINAL | TOLEDO | OH |
| PRESTON OIL COMPANY | PAVONIA | OH |
| PRIME INDUSTRIES | CLEVELAND | OH |
| PRINCETON SCHOOL | YOUNGSTOWN | OH |
| Procon, Inc. for Gulf Oil Corp. | Toledo | OH |
| Procter & Gamble | Cincinnati | OH |
| Procter & Gamble | Ivorydale | OH |
| Procter & Gamble | St. Bernard | OH |
| PROCTER & GAMBLE – 6TH & SYCAMORE | CINCINNATI | OH |
| PROCTER & GAMBLE – BUILDING 12 & 55 – VINE STREET | CINCINNATI | OH |
| PROCTER & GAMBLE – IVORYDALE BUILDING 60 | CINCINNATI | OH |
| PROCTER & GAMBLE – IVORYDALE FACTORY – FOOD PRODUCTS STOREROOM | CINCINNATI | OH |
| PROCTER & GAMBLE – IVORYDALE PLANT – 5201 SPRING GROVE AVENUE | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, ST. BERNARD TOILET GOODS, 5215 VINE ST. | CINCINNATI | OH |
| PROCTER & GAMBLE – MEDICAL OFFICES | IVORYDALE | OH |
| PROCTER & GAMBLE – SAINT BERNARD PLANT – 5285 VINE STREET | CINCINNATI | OH |
| PROCTER & GAMBLE – SAINT BERNARD TOILET GOODS – 5215 VINE STREET | CINCINNATI | OH |
| PROCTER & GAMBLE – WAREHOUSE – PHASE II – MURRAY ROAD | CINCINNATI | OH |
| PROCTER & GAMBLE COMPANY – SAINT BERNARD TOILET GOODS – 5215 VINE STREET | CINCINNATI | OH |
| PROCTER & GAMBLE IVORYDALE PLANT | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, 6TH & SYCAMORE | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, BUILDING 12 & 55, VINE ST. | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, IVORYDALE BUILDING 60 | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, IVORYDALE FACTORY, FOOD PRODUCTS STOREROOM | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, IVORYDALE PLANT, 5201 SPRING GROVE AVE. | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, MEDICAL OFFICES | IVORYDALE | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, ST. BERNARD PLANT, 5285 VINE ST. | CINCINNATI | OH |
| PROCTER & GAMBLE MANUFACTURING COMPANY, WAREHOUSE, PHASE II, MURRAY RD. | CINCINNATI | OH |
| Procter & Gamble Mfg. Company | Ivorydale | OH |
| PROCTER AND GAMBLE | IVORYDALE | OH |
| PROCTER AND GAMBLE | MASON | OH |
| PROCTER AND GAMBLE – IVORYDALE PLANT | CINCINNATI | OH |
| PROCTER AND GAMBLE CHEMICALS – ALCOHOL PLANT | CINCINNATI | OH |
| PROCTER AND GAMBLE COMPANY | CINCINNATI | OH |
| PROCTER AND GAMBLE COMPANY | MASON | OH |
| PROCTER AND GAMBLE COMPANY | VENICE | OH |
| PROCTER AND GAMBLE COMPANY | IVORYDALE | OH |
| PROCTER AND GAMBLE COMPANY | ST. BERNARD | OH |
| PROCTER AND GAMBLE MANUFACTURING COMPANY | CINCINNATI | OH |
| PROCTER AND GAMBLE MANUFACTURING COMPANY | IVORYDALE | OH |
| PROCTER AND GAMBLE, HCRC PERMIT #5388 | MASON | OH |
| PROCTOR & GAMBLE | CINCINNATI | OH |
| PROCTOR & GAMBLE | COLERAIN TOWNSHIP | OH |
| PROCTOR & GAMBLE | LIMA | OH |
| Proctor & Gamble | Ivorydale Cinn | OH |
| Proctor & Gamble | Saint Bernard | OH |
| Proctor & Gamble | Spring Grove | OH |
| Proctor & Gamble | Ivorydale | OH |
| PROCTOR & GAMBLE – 5201 SPRING GROVE AVENUE | IVORYDALE | OH |
| PROCTOR & GAMBLE – 5202 SPRING GROVE AVENUE | IVORYDALE | OH |
| PROCTOR & GAMBLE – ALCOHOL TANK | CINCINNATI | OH |
| PROCTOR & GAMBLE – BUILDING 99 | CINCINNATI | OH |
| PROCTOR & GAMBLE – CONVEYOR BRIDGE | CINCINNATI | OH |
| PROCTOR & GAMBLE – DEORDORIZER | CINCINNATI | OH |
| PROCTOR & GAMBLE – DEPARTMENT 1 | IVORYDALE | OH |
| PROCTOR & GAMBLE – FLOUR TANKS | CINCINNATI | OH |
| PROCTOR & GAMBLE – ITC BUILDING | IVORYDALE | OH |
| PROCTOR & GAMBLE – MIAMI VALLEY LABORATORY – PO BOX 39175 | CINCINNATI | OH |
| PROCTOR & GAMBLE – PO BOX 1589 | LIMA | OH |
| PROCTOR & GAMBLE – PO BOX 599 | CINCINNATI | OH |
| PROCTOR & GAMBLE – PROJECT 3038 | SAINT BERNARD | OH |
| PROCTOR & GAMBLE – TANK #115 | CINCINNATI | OH |
| PROCTOR & GAMBLE – TANK #16 | CINCINNATI | OH |
| PROCTOR & GAMBLE – TANK #400 | IVORYDALE | OH |
| PROCTOR & GAMBLE – TANK #43 | CINCINNATI | OH |
| PROCTOR & GAMBLE – TANK #44 | CINCINNATI | OH |
| PROCTOR & GAMBLE – TANK DH3 | CINCINNATI | OH |
| PROCTOR & GAMBLE – TOILET GOODS PLANT | CINCINNATI | OH |
| PROCTOR & GAMBLE – WINTON HILL TECH CENTER | IVORYDALE | OH |
| Proctor & Gamble Co | Cincinnati | OH |
| PROCTOR & GAMBLE COMPANY – IVORYDALE PLANT | ST. BERNARD | OH |
| PROCTOR & GAMBLE MFG CO | CINCINNATI | OH |
| PROCTOR AND GAMBLE MFG CO | CINCINNATTI | OH |
| PROCTOR GAMBLE COMPANY | IVORYDALE | OH |
| PROFILE GRINDING | CLEVELAND | OH |
| PROGRESS LITHOGRAPHING | CINCINNATI | OH |
| Proseal Mfg. | Cleveland | OH |
| Protective Treatment | Dayton | OH |
| Protective Treatment, Incorporated | Dayton | OH |
| PROVIDENCE HOSPITAL | CINCINNATI | OH |
| PROVIDENCE HOSPITAL | SANDUSKY | OH |
| PROVIDENCE HOSPITAL | GROESBECK | OH |
| PROVIDENCE HOSPITAL – LAUNDRY | CINCINNATI | OH |
| PROVIDENCE HOSPITAL – SERVICE BUILDING – 2366 KIPLING | CINCINNATI | OH |
| PROVIDENT COAL COMPANY | PROVIDENT | OH |
| PROVIDENT SAVINGS BANK AND TRUST COMPANY | CINCINNATI | OH |
| PROVIDENT TOWER | CINCINNATI | OH |
| PUBLIC SERVICE COMPANY | COLUMBUS | OH |
| PULL AUTO BODY | CLEVELAND | OH |
| PURE DIE CO | HEATH | OH |
| PURE GUM SPECIALTY COMPANY | BARBERTON | OH |
| PURE OIL | TOLEDO | OH |
| PURE OIL CO | TOLEDO | OH |
| PURE OIL CO | HEATH | OH |
| PURE OIL CO | HEALTH | OH |
| PURE OIL COMPANY | NEWARK | OH |
| PURE OIL COMPANY | OREGON | OH |
| Pure Oil Company | Heath | OH |
| Pure Oil Company | Toledo | OH |
| PURE OIL COMPANY – HEATH REFINERY | HEATH | OH |
| PURE OIL COMPANY – TOLEDO REFINERY | OREGON | OH |
| PURE OIL COMPANY – TOLEDO REFINERY | TOLEDO | OH |
| PURE OIL COMPANY REFINERY | HEATH | OH |
| PURE OIL COMPANY REFINERY | TOLEDO | OH |
| PURE OIL COMPANY REFINERY – STORAGE WHSE | TOLEDO | OH |
| Pure Oil Refinery | Toledo | OH |
| PURITAN BRICK COMPANY | HAMDEN | OH |
| Quaker Manufacturing | Salem | OH |
| QUAKER OATS COMPANY | MARION | OH |
| QUAKER OATS COMPANY | CANTON | OH |
| Quaker Oats Company | Akron | OH |
| QUAKER OATS COMPANY, MERCHANDISE MART PLAZA | MARION | OH |
| QUALITY CASTING | ORRVILLE | OH |
| QUALITY CRYSTALS PLANT | CORTLAND | OH |
| Quality Matchplate Co | Southington | OH |
| QUARTO MINING | CLARINGTON | OH |
| QUARTO MINING COMPANY – POWHATAN MINE 4 | CLARINGTON | OH |
| QUEEN CITY SUPPLY COMPANY | CINCINNATI | OH |
| R & W MANUFACTURING CO | BARBERTON | OH |
| R A TAFT CENTER | CINCINNATI | OH |
| R A TAFT CENTER – BANK & PATTERSON STREET | CINCINNATI | OH |
| R A TAFT CENTER – COLUMBIA PARKWAY | CINCINNATI | OH |
| R. E. KRAMIG & CO. | CINCINNATI | OH |
| R. KOONS | CLEVELAND | OH |
| R.B. BRUNEMANN & SONS, INCORPORATED | CINCINNATI | OH |
| R.C.A. CORP. | CIRCLEVILLE | OH |
| R.C.A. RUBBER COMPANY | AKRON | OH |
| R.E. BURGER POWER PLANT | SHADYSIDE | OH |
| R.E. BURGER POWER PLANT – UNIT 15 | SHADYSIDE | OH |
| R.E. BURGER POWER STATION | SHADYSIDE | OH |
| R.K. LE BLOND MACHINE TOOL COMPANY | LINWOOD, CINCINNATI | OH |
| R.M.I. COMPANY | ASHTABULA | OH |
| R.O. APELT AND SONS | CLEVELAND | OH |
| R.O. APELT GREENHOUSE | CLEVELAND | OH |
| R.W. Manufacturing Company | Akron | OH |
| RADEL CONCRETE | CINCINNATI | OH |
| RADIO CORPORATION OF AMERICA – 5040 LESTER ROAD | CINCINNATI | OH |
| RADIO CORPORATION OF AMERICA, 5040 LESTER RD. | CINCINNATI | OH |
| RAILROAD SAVINGS AND LOAN COMPANY – EAST BROAD STREET | COLUMBUS | OH |
| RAINBOW TIRE AND RUBBER COMPANY | DELAWARE | OH |
| RAJAH OIL COMPANY | YOUNGSTOWN | OH |
| RALPH M. PARSONS CO & STOUFFER CHEMICAL CO | ASHTABULA | OH |
| Ralston Purina | Lancaster | OH |
| RAMADA INN – 1-71 PFEIFFER ROAD | CINCINNATI | OH |
| RAMADA INN – NEUBRECHT ROAD | LIMA | OH |
| RANDALL AND EDSELL | DELAWARE | OH |
| RANDALL MALL | RANDALL | OH |
| RANDALL PARK MALL – HIGBEE’S DEPARTMENT STORE – MILES ROAD | NORTH RANDALL | OH |
| RANDALL PARK MALL – MILES ROAD | NORTH RANDALL | OH |
| Randall Park Mall Shopping Center, J. C. Penney Company | North Randall | OH |
| RAPID RAILWAY COMPANY | CINCINNATI | OH |
| RAPID RAILWAY COMPANY | SOUTH LEBANON | OH |
| RAUCH AND LANG CARRIAGE COMPANY | CLEVELAND | OH |
| RAUCH AND LAUG CARRIAGE COMPANY | CLEVELAND | OH |
| RAVENNA ARMY AMMUNITION PLANT | RAVENNA | OH |
| Ravenna Castings | Ravenna | OH |
| RAVENNA ORDNANCE | RAVENNA | OH |
| RAVENNA ORDNANCE PLANT | RAVENNA | OH |
| RAYEN SCHOOL | YOUNGSTOWN | OH |
| RAYMOND P. LIFE COMPANY | BRYAN | OH |
| RCA | CIRCLEVILLE | OH |
| RCA Rubber Company | Akron | OH |
| Re Kramig Company | Lockland | OH |
| Re Kramig Company | Cincinnati | OH |
| REACTIVE METAL | NILES | OH |
| REACTIVE METALS | ASHTABULA | OH |
| REACTIVE METALS INC | ASHTABULA | OH |
| REACTIVE METALS INC – EXTRUSION PLANT | ASHTABULA | OH |
| REACTIVE METALS INC – METALS REDUCTION PLANT | ASHTABULA | OH |
| REACTIVE METALS INC – SODIUM PLANT | ASHTABULA | OH |
| REACTIVE METALS PLANT | ASHTABULA | OH |
| READING POWER | EVENDALE | OH |
| RECORDING AND COMPUTING MACHINE COMPANY | DAYTON | OH |
| RED SEAL ELEC. – ARMO DIV. | CLEVELAND | OH |
| RED SEAL ELECTRIC | CLEVELAND | OH |
| RED SEAL ELECTRIC CO | CLEVELAND | OH |
| RED SEAL ELECTRIC COMPANY | Cleveland | OH |
| RED TOP BREWING COMPANY | CINCINNATI | OH |
| REEVES BROTHERS | ALLIANCE | OH |
| REEVES BROTHERS COMPANY | ALLIANCE | OH |
| REEVES COAL COMPANY | NEW PHILADELPHIA | OH |
| REEVES COAL COMPANY | CANAL DOVER | OH |
| REEVES IRON COMPANY | CANAL DOVER | OH |
| REEVES MANUFACTURING COMPANY | DOVER | OH |
| REFINING STORES | TOLEDO | OH |
| REGAL DIAMOND PROD. | CLEVELAND | OH |
| REITER CORPORATION | CANTON | OH |
| RELIANCE ELECTRIC | ASHTABULA | OH |
| RELIANCE ELECTRIC & ENG. CO. – A.P.D. ROOM | CLEVELAND | OH |
| RELIANT ENERGY | NILES | OH |
| Remington Rand | Marietta | OH |
| RENCO GROUP, INCORPORATED, WARREN WORKS | WARREN | OH |
| RENKERT BUILDING | CANTON | OH |
| RENNER BREWING COMPANY | AKRON | OH |
| REPUBLIC ALUMINUM | WARREN | OH |
| REPUBLIC ALUMINUM | MASSILON | OH |
| REPUBLIC ALUMINUM | INDEPENDENCE | OH |
| REPUBLIC ALUMINUM | YOUNGSTOWN | OH |
| REPUBLIC ENGINEERED STEELS | MASSILLON | OH |
| REPUBLIC IRON AND STEEL | YOUNGSTOWN | OH |
| Republic Iron and Steel | Warren | OH |
| REPUBLIC IRON AND STEEL COMPANY | YOUNGSTOWN | OH |
| REPUBLIC IRON AND STEEL COMPANY | NILES | OH |
| REPUBLIC IRON AND STEEL COMPANY | HASELTON | OH |
| Republic Powdered Metals | Cleveland | OH |
| Republic Powdered Metals | Medina | OH |
| REPUBLIC RAILWAY AND LIGHT COMPANY – LOWELLVILLE STEAM PLANT | LOWELLVILLE | OH |
| REPUBLIC RUBBER | STRUTHERS | OH |
| REPUBLIC RUBBER COMPANY | YOUNGSTOWN | OH |
| REPUBLIC RUBBER DIVISION, LEE RUBBER AND TIRE CORPORATION | YOUNGSTOWN | OH |
| REPUBLIC STAMPING AND ENAMELING COMPANY | CANTON | OH |
| Republic Steel | Massilon | OH |
| Republic Steel | Campbell | OH |
| Republic Steel | Youngstown | OH |
| Republic Steel | Warren | OH |
| Republic Steel | Barberton | OH |
| Republic Steel | Midland | OH |
| Republic Steel | Cleveland | OH |
| Republic Steel | Canton | OH |
| Republic Steel | Niles | OH |
| REPUBLIC STEEL | MASSILLON | OH |
| Republic Steel | Poland Ave | OH |
| Republic Steel | Newburg Hts. | OH |
| Republic Steel | Lorain | OH |
| Republic Steel | Masillon | OH |
| REPUBLIC STEEL | TOLEDO | OH |
| REPUBLIC STEEL | INDEPENDENCE | OH |
| REPUBLIC STEEL | GRAND RIVER | OH |
| REPUBLIC STEEL – BLAST FURNACE | WARREN | OH |
| REPUBLIC STEEL BOF STORES | CLEVELAND | OH |
| Republic Steel Co | Cleveland | OH |
| Republic Steel Co | Massillon | OH |
| REPUBLIC STEEL CO. | INDEPENDENCE | OH |
| REPUBLIC STEEL COMPANY | MASSILLON | OH |
| REPUBLIC STEEL COMPANY | YOUNGSTOWN | OH |
| REPUBLIC STEEL COMPANY, TRUSCON DIVISION | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP | CANTON | OH |
| REPUBLIC STEEL CORP | WARREN | OH |
| REPUBLIC STEEL CORP | ELVIRA | OH |
| REPUBLIC STEEL CORP | ELYRIA | OH |
| REPUBLIC STEEL CORP | CLEVELAND | OH |
| Republic Steel Corp | Youngstown | OH |
| REPUBLIC STEEL CORP – HASELTON WORKS | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP SHIP AREA | CLEVELAND | OH |
| REPUBLIC STEEL CORP. | CLEVELAND | OH |
| REPUBLIC STEEL CORP. | TOLEDO | OH |
| REPUBLIC STEEL CORP. | WARREN | OH |
| REPUBLIC STEEL CORP. | CANTON | OH |
| REPUBLIC STEEL CORP. | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP. – MECHANICAL DEPT. – #1 COKE PLANT | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – #1 COKE PLANT | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – #6 BALST FURNACE | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – 84 IN HOT MILL FCE – GATE 4 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – 98″ STRIP MILL – STORE ROOM | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – B O F STORES | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – C. H. PIPE SHOP – MECH. DEPT. | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP. – COLD STRIP ANNEAL – GATE 3 | WARREN | OH |
| REPUBLIC STEEL CORP. – ENGINEERING STOREROOM – STRIP MILL GATE #4 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – GATE #1 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – MECHANICAL DEPARTMENT – BOILER HOUSE | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP. – MECHANICAL DEPARTMENT – O. H. PIPE SHOP | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP. – NO 2 OPEN HEARTH SHOP | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – OHIO PIPE SHOP – MECH. DEPT. | YOUNGSTOWN | OH |
| REPUBLIC STEEL CORP. – PLANT 1 | CANTON | OH |
| REPUBLIC STEEL CORP. – STEEL PLANT – STORE ROOM | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STEEL PLANT – STORE ROOM – GATE #1 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORE ROOM | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORE ROOM – GATE #1 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORES | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORES – CLEVELAND DISTRICT | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORES – STRIP MILL | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORES #3197 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STORES DEPARTMENT | CLEVELAND | OH |
| REPUBLIC STEEL CORP. – STRIP MILL – STORE ROOM – GATE #4 | CLEVELAND | OH |
| REPUBLIC STEEL CORP. #1 COKE PLANT – MECHANICAL DEPT. | CLEVELAND | OH |
| REPUBLIC STEEL CORP. STRIP MILL | CLEVELAND | OH |
| REPUBLIC STEEL CORP. STRIP MILL – ENGINEERING STOREROOM | CLEVELAND | OH |
| REPUBLIC STEEL CORP., , OPEN HEARTH DEPT. | CLEVELAND | OH |
| REPUBLIC STEEL CORPORATION | INDEPENDENCE | OH |
| Republic Steel Corporation | Cleveland | OH |
| Republic Steel Corporation | Massillon | OH |
| Republic Steel Corporation | Warren | OH |
| Republic Steel Corporation | Youngstown | OH |
| REPUBLIC STEEL CORPORATION | CANTON | OH |
| REPUBLIC STEEL CORPORATION | LORAIN | OH |
| REPUBLIC STEEL CORPORATION, CANTON DIVISION | CANTON | OH |
| REPUBLIC STEEL CORPORATION, UNION DRAWN STEEL DIVISION | MASSILLON | OH |
| REPUBLIC STEEL CPR | CLEVELAND | OH |
| REPUBLIC STEEL JOB | CANTON | OH |
| REPUBLIC STEEL, BABCOCK & WILCOX, STANDARD | CLEVELAND | OH |
| Republic Steel/LTV Steel | YOUNGSTOWN | OH |
| Republic Steel/LTV/WCI | Warren | OH |
| REPUBLIC STEELCORP | CLEVELAND | OH |
| REPUBLIC STEEL-ENDURO PLANT | MASSILLON | OH |
| REPUBLIC T AND D COMPANY | YOUNGSTOWN | OH |
| REPUBLIC TECHNOLOGIES | MASSILLON | OH |
| RESEARCH PRODUCT COMPANY | WARREN | OH |
| Reserve Sheet Metal & Furnace Company | Cleveland | OH |
| RESIDENCE CENTER | ALLIANCE | OH |
| REX – BUDKEYE | CLEVELAND | OH |
| REX FILE COMPANY | NEW COMERSTOWN | OH |
| REX METAL PARTS | CLEVELAND | OH |
| REX METALS PARTS | CLEVELAND | OH |
| REX METALS, INC. | CLEVELAND | OH |
| REX RALPH SCHOOL | MOUNT HEALTHY | OH |
| REYNOLDS | SHEFFIELD | OH |
| REYNOLDS AND REYNOLDS COMPANY | DAYTON | OH |
| REYNOLDS MEMORIAL HOSPITAL | CANTON | OH |
| REYNOLDS METALS | ASHVILLE | OH |
| REYNOLDS METALS COMPANY | NEWARK | OH |
| REYNOLDS NEAR | CIRCLEVILLE | OH |
| RIC WIL COMPANY | BARBERTON | OH |
| RIC WIL INC. | BARBERTON | OH |
| RICH LADDER AND MANUFACTURING COMPANY | CINCINNATI | OH |
| Richard Klinger | Sidney | OH |
| RICHARDS FENCE | AKRON | OH |
| RICHARDS WHOLESALE | CLEVELAND | OH |
| RICHARDSON PAPER COMPANY | LOCKLAND | OH |
| RICHLAND BRICK | MANSFIELD | OH |
| RICHLAND STEEL COMPANY | MANSFIELD | OH |
| RICHMOND BROS. | CLEVELAND | OH |
| RICHMOND HEIGHTS SCHOOL | RICHMOND HEIGHTS | OH |
| RICHMOND MACHINE CO. | MONTPELIER | OH |
| RICHMONDS MACHINE SHOP | MONTPELIER | OH |
| RICHMONDS MACHINES SHOP | MONTPELIER | OH |
| RICWIL | Barberton | OH |
| RIDGE ROAD INCINERATOR, CITY OF CLEVELAND | CLEVELAND | OH |
| Ridge Tool | Cleveland | OH |
| RIDGEWOOD STEEL COMPANY, CARTHAGE | CINCINNATI | OH |
| RIKE-KUMLER COMPANY | DAYTON | OH |
| RIMER ENTERPRISES | WATERVILLE | OH |
| RINEHART BALLARD AND COMPANY | SPRINGFIELD | OH |
| RINGEL BUILDING – UTILITIES BUILDING | HAMILTON | OH |
| RITTMAN PAPERBOARD | RITTMAN | OH |
| RIVER FURNACE AND DOCK COMPANY | CLEVELAND | OH |
| River Furnace Co. | Cleveland | OH |
| RIVER FURNACE COMPANY | CLEVELAND | OH |
| RIVER PUMPING STATION | CINCINNATI | OH |
| RIVER SMELTING | CLEVELAND | OH |
| RIVER SMELTING COMPANY | CLEVELAND | OH |
| RIVER TRANSPORTATION | CINCINNATI | OH |
| RIVERFRONT STADIUM – CINCINNATI REDS EXECUTOR OFFICES | CINCINNATI | OH |
| RIVERSIDE BRIDGE COMPANY | MARTINS FERRY | OH |
| Riverside Hospital | Columbus | OH |
| RIVERSIDE HOSPITAL | TOLEDO | OH |
| RIVERSIDE MERCY HOSPITAL | TOLEDO | OH |
| RIVERSIDE METHODIST HOSPITAL – OLENTANGY RIVER ROAD | COLUMBUS | OH |
| RJF INTERNATIONAL CORPORATION | MARIETTA | OH |
| RMI CO. | ASHTABULA | OH |
| RMI Metals | Ashtabula | OH |
| Robbins & Myers Inc | Springfield | OH |
| ROBBINS AND MYERS INCORPORATED | SPRINGFIELD | OH |
| Robert Bossow, Inc. | Garrettsville | OH |
| Robert Jamison Jr. High School | Cleveland | OH |
| ROBERTS INSULATING | BELLVILLE | OH |
| ROBERTS INSULATION | BELLEVILLE | OH |
| ROBINSON BROTHERS COMPANY | AKRON | OH |
| ROBINSON CLAY PRODUCT COMPANY | PARRAL | OH |
| ROBINSON CLAY PRODUCTS | MOGADORE | OH |
| ROBINSON CLAY PRODUCTS COMPANY | PARRAL | OH |
| ROBINSON CLAY PRODUCTS COMPANY | AKRON | OH |
| ROBINSON CLAY PRODUCTS COMPANY | MALVERN | OH |
| ROCK CREEK ALUMINUM | ROCK CREEK | OH |
| ROCK CREEK ALUMINUM CO | ROCK CREEK | OH |
| ROCKEFELLER BUILDING | CLEVELAND | OH |
| Rockwell | Racine | OH |
| Rockwell | Toronto | OH |
| ROCKWELL | BARBERTON | OH |
| ROCKWELL | NEWARK | OH |
| Rockwell (North American) | Columbus | OH |
| ROCKWELL MANUFACTURING COMPANY | BARBERTON | OH |
| ROCKWELL MANUFACTURING COMPANY | BARB | OH |
| ROCKWELL STANDARD CORP | NEWARK | OH |
| Rockwell Standard Corporation | Columbus | OH |
| ROCKWELL STANDARD* | NEWARK | OH |
| ROCKWELL-STANDARD CORPORATION – AXLE ASSEMBLY PLANT | MARYSVILLE | OH |
| ROCKY RIVER HIGH SCHOOL | CLEVELAND | OH |
| ROCKY RIVER HIGH SCHOOL | ROCKY RIVER | OH |
| RODERICK LEAN MANUFACTURING COMPANY | MANSFIELD | OH |
| ROGERS BROWN COMPANY | IRONTON | OH |
| ROLL MACHINE WORKS | CANTON | OH |
| ROLLING HILLS HIGH SCHOOL | BYESVILLE | OH |
| RON DEWEY | CLEVELAND | OH |
| ROOFING & SHEET METAL INC | YOUNGSTOWN | OH |
| ROOFING SHEET METAL INC | YOUNGSTOWN | OH |
| ROOSEVELT JR HIGH SCHOOL | HAMILTON | OH |
| ROOSEVELT SCHOOL | CANTON | OH |
| ROSS COUNTY MEDICAL CENTER | CHILLICOTHE | OH |
| ROSS LABORATORIES | COLUMBUS | OH |
| ROSS LABORATORIES – FRANKLIN COUNTY | COLUMBUS | OH |
| ROSS LABORATORIES, DIVISION OF ABBOTT LABORATORIES | COLUMBUS | OH |
| ROSS LABORATORIES, FRANKLIN COUNTY | COLUMBUS | OH |
| Ross Labs | Columbus | OH |
| Ross Willoughby Company | Springfield | OH |
| Ross Willoughby Company | Columbus | OH |
| ROSSBOROUGH SUPPLY | CLEVELAND | OH |
| Rossford Ordnance Depot | Toledo | OH |
| Rough Power Plant | Toronto | OH |
| ROYAL CROWN COLA | CINCINNATI | OH |
| ROYAL PLASTIC | CINCINNATI | OH |
| ROYAL PLASTIC MANUFACTURING, INC. | CINCINNATI | OH |
| Royal View Elementary School | North Royalton | OH |
| RPM Products | Medina | OH |
| RUBBER COMPANY | AKRON | OH |
| RUBBER MAID | CANTON | OH |
| RUBBER MAIN JOB | CANTON | OH |
| RUBBER PRODUCTS COMPANY | BARBERTON | OH |
| RUBBERMAID | CANTON | OH |
| RUBEL BAKING COMPANY | CINCINNATI | OH |
| RUD MACHINE CO. | CLEVELAND | OH |
| RUSH STREET BOILER HOUSE | ALLIANCE | OH |
| Russel Gasket Co | Cleveland | OH |
| RUSSELL AND COMPANY | MASSILLON | OH |
| RUSSELL ENGINE COMPANY | MASSILLON | OH |
| RUSSO ORN. | BEDFORD | OH |
| RUST ENGINEERING | CHILLICOTHE | OH |
| RUST ENGINEERING COMPANY | TOLEDO | OH |
| RUST ENGR. | CINCINNATI | OH |
| RUTHERFORD FUNERAL HOME | WORTHINGTON | OH |
| R-W Manufacturing Company | Barberton | OH |
| S K RESISTI COATING CO | WORTHINGTON | OH |
| S K WAYNE TOOL CO | DEFIANCE | OH |
| S. K. RESISTITE | COLUMBUS | OH |
| S. SIDE HOSPITAL | YOUNGSTOWN | OH |
| S.A. ESSWEIN HEATING AND PLUMBING COMPANY | COLUMBUS | OH |
| S.C.M. CHEMICAL PLANT #2 | ASHTABULA | OH |
| S.K. WELLMAN COMPANY | BEDFORD | OH |
| SAFE CABINET COMPANY | MARIETTA | OH |
| SAFETY CLOTHING | CLEVELAND | OH |
| SAFETY ENGINEERING | CLEVELAND | OH |
| Safsson Products | Painesville | OH |
| Saginaw Mining Company | St. Clairsville | OH |
| SAINT BERNARD CENTER | SAINT BERNARD | OH |
| SAINT BERNARD JUNIOR-SENIOR HIGH SCHOOL | SAINT BERNARD | OH |
| SAINT BERNARD SCHOOL | CINCINNATI | OH |
| SAINT JUDE CATHOLIC CHURCH | CHAUNCEY | OH |
| Salem Electric | Salem | OH |
| Salem Furnace Plant | Salem | OH |
| SALEM HOSPITAL | SALEM | OH |
| SALEM IRON COMPANY | LEETONIA | OH |
| Sallonoff Home Products | Shelby | OH |
| SAM W. EMERSON CO. | CLEVELAND | OH |
| SAMDY`S RESTAURANT | CINCINNATI | OH |
| SAMMIS & OHIO EDISON POWER PLANT | STRATTON | OH |
| Sammis Power Station | Stratton | OH |
| SAMSEL ROPE | CLEVELAND | OH |
| SAMUEL AUSTIN AND SON COMPANY | CLEVELAND | OH |
| SAMUEL HANNAFORD AND SONS, ARCHITECTS | CINCINNATI | OH |
| SAMUEL MOORE & CO. | MANTUA | OH |
| SANBORN WIRE PRODUCT | ROCK CREEK | OH |
| SANDERS HALL | CINCINNATI | OH |
| Sandover Inner City HUD | Columbus | OH |
| SANDUSKY & INTERURBAN ELECTRIC RAILWAY – POWER HOUSE | SANDUSKY | OH |
| SANDUSKY AND INTERUBAN STREET RAILWAY COMPANY | SANDUSKY | OH |
| SANDUSKY CEMENT COMPANY | BAY BRIDGE | OH |
| SANDUSKY CEMENT COMPANY | SILICA | OH |
| SANDUSKY FOUNDRY | SANDUSKY | OH |
| SANDUSKY FOUNDRY AND MACHINE COMPANY | SANDUSKY | OH |
| SANDUSKY GAS AND ELECTRIC COMPANY – POWER PLANT | SANDUSKY | OH |
| SANDUSKY PORTLAND CEMENT COMPANY | BAY BRIDGE | OH |
| SANDY`S RESTAURANT | CINCINNATI | OH |
| SANITARY PLUMBING COMPANY | COLUMBUS | OH |
| SARA LEE FOOD & BEVERAGE | CINCINNATI | OH |
| SARA PAPER COMPANY | MIDDLETOWN | OH |
| SAS Rubber Inc. | Painesville | OH |
| SAUER INC. | COLUMBUS | OH |
| Sauers Corner, Incorporated | Westlake | OH |
| SAUNDERS & ESSWEIN | COLUMBUS | OH |
| SAUNDERS & ESSWEIN | JACKSON | OH |
| Save Electric Company | Toledo | OH |
| SAWBROOK STEEL – 3670 WERK ROAD | EVENDALE | OH |
| SAWBURY COMMUNITY APARTMENTS | WORTHINTON | OH |
| SAWYER RESEARCH PLANT | EASTLAKE | OH |
| SAWYER RESEARCH PRODUCTS, INC. | EASTLAKE | OH |
| SAWYERS RESEARCH PROD | EASTLAKE | OH |
| SAYERS AND SCOVILL | CINCINNATI | OH |
| SAYERS AND SCOVILL | BRIGHTON | OH |
| SAYERS AND SCOVILL COMPANY | CINCINNATI | OH |
| SCHAEFER EQUIPMENT COMPANY | WARREN | OH |
| SCHANTZ AND SCHWIND BREWING COMPANY | DAYTON | OH |
| SCHENLEY DISTILLERS, INCORPORATED | CINCINNATI | OH |
| Schenley Distillery | Cincinnati | OH |
| SCHLATHER BREWING COMPANY | CLEVELAND | OH |
| SCHMELLER ALUMINUM | CLEVELAND | OH |
| SCHMELLER FOUNDRY | CLEVELAND | OH |
| SCHMIDT & SONS INC | CLEVELAND | OH |
| SCHMIDT & SONS, INC. | CLEVELAND | OH |
| Schriber Sheet Metal | Akron | OH |
| SCHULTE BRASS | CINCINNATI | OH |
| SCHWEITZER BROTHERS | CINCINNATI | OH |
| SCHWEIZER – DIPPLE | CLEVELAND | OH |
| SCIENTIFIC CAST PRODUCERS | CLEVELAND | OH |
| SCIOTO ORDNANCE PLANT | MARION | OH |
| Scioto Paper Company | Columbus | OH |
| SCM CHEMICAL GLIDDEN CORP. | CLEVELAND | OH |
| SCM CHEMICALS PLANT NO. 2 | GENEVA | OH |
| SCM CHEMICALS, PLANT #2 | ASHTABULA | OH |
| SCM CORPORATION | CLEVELAND | OH |
| SCOCOS PLUMBING & HTG | CLEVELAND | OH |
| SCOCOS PLUMBING CO – NASA ERB BLDG | CLEVELAND | OH |
| SCOTT & FETZER | BEDFORD | OH |
| SCOTT HIGH SCHOOL | TOLEDO | OH |
| Scott Lumber Co | Lansing | OH |
| Scotts Lawn & Garden Products Manufacturing | Marysville | OH |
| SCRANTON GREENHOUSE | CLEVELAND | OH |
| Seal E. Plastic | Cleveland | OH |
| SEARS & ROEBUCK – NORTHGATE MALL – COLERAIN & SPRINGFIELD ROAD | CINCINNATI | OH |
| SEARS ROEBUCK & COMPANY | CINCINNATI | OH |
| SEARS, CHAPEL HILL SHOPPING CENTER | AKRON | OH |
| SEARS, ROEBUCK AND COMPANY | NORWOOD | OH |
| SEBRING POTTERY COMPANY | SEBRING | OH |
| SEBRING TIRE | CANTON | OH |
| Second Church of Christ, Scientist | Toledo | OH |
| SECOND NATIONAL BANK BUILDING | TOLEDO | OH |
| SEIBERLINE RUBBER | BARBERTON | OH |
| SEIBERLING RUBBER | CANTON | OH |
| SEIBERLING RUBBER COMPANY | AKRON | OH |
| SEIBERLING RUBBER COMPANY | BARBERTON | OH |
| SEIBERLING RUBBER COMPANY – MANUFACTURING PLANT | BARBERTON | OH |
| Seiberling Tire & Rubber | Barberton | OH |
| SEILON INCORPORATED | NEWCOMERSTOWN | OH |
| SELBY SHOE COMPANY | PORTSMOUTH | OH |
| Sement Solvay | Ironton | OH |
| SEMET-SOLVAY COMPANY | IRONTON | OH |
| SEMET-SOLVAY COMPANY | BELLAIRE | OH |
| Semet-Solvay Company (Div. Of Allied Chemical Corp.) – Coke Plant | Ironton | OH |
| SENCO PRODUCTS – 8485 BROADWELL ROAD | CINCINNATI | OH |
| SENECA TAPE | CLEVELAND | OH |
| Sentco Paint | Youngstown | OH |
| SERVICE PRODUCTS | TOLEDO | OH |
| SERVICE PRODUCTS CO | TOLEDO | OH |
| Service Products Inc. Of Toledo | Toledo | OH |
| Service Products Of Columbus Inc | Columbus | OH |
| SERVICE PRODUCTS, INC. | TOLEDO | OH |
| SERVICE PRODUCTS, INC. | COLUMBUS | OH |
| SERVICE PRODUCTS, INC. | ATHENS | OH |
| SERVICE SYSTEMS | CLEVELAND | OH |
| SERVICE TOOL | NORTH CANTON | OH |
| SERVOMATION-TIBBALS | CINCINNATI | OH |
| SEVENTH ST TIRE | CINCINNATI | OH |
| SEVERSTAL WARREN | WARREN | OH |
| SEVERSTAL WHEELING, INCORPORATED | MARTINS FERRY | OH |
| SEVILLE CENTRIFUGAL | SEVILLE | OH |
| SEWELL AVERY | LORAIN | OH |
| SHAKER COMPANY | CLEVELAND | OH |
| SHARON STEEL | LOUISVILLE | OH |
| SHARON STEEL | Warren | OH |
| SHARON STEEL | Youngstown | OH |
| SHARON STEEL CORPORATION | LOWELLVILLE | OH |
| SHARON STEEL HOOP COMPANY | LOWELLVILLE | OH |
| SHARON STEEL HOOP COMPANY | YOUNGSTOWN | OH |
| SHARONVILLE MUNICIPAL COURT | SHARONVILLE | OH |
| SHARPSVILLE FURNACE COMPANY | CLEVELAND | OH |
| SHARTLE BROTHERS MACHINE COMPANY | MIDDLETOWN | OH |
| SHARTLE BROTHERS MACHINE COMPANY | CLEVELAND | OH |
| SHARTLE MACHINE COMPANY | COLUMBUS | OH |
| SHAWNEE REFRIGERATION COMPANY | XENIA | OH |
| SHEET & TUBE, OFFICE BUILDING | YOUNGSTOWN | OH |
| SHEET METAL DEPT | MANSFIELD | OH |
| SHELBY ELECTRIC COMPANY – LAMP WORKS | SHELBY | OH |
| SHELBY MUNICIPAL LIGHT PLANT | SHELBY | OH |
| Shell Chemical | Marietta | OH |
| Shell Chemical | Belpre | OH |
| SHELL CHEMICAL CO | BELPRE | OH |
| SHELL CHEMICAL CO. | BELPRE | OH |
| Shell Chemical Company | Belpre | OH |
| SHELL CHEMICAL CORP | BELPRE | OH |
| Shell Chemical Corp. | Belpro | OH |
| SHELL OIL | CINCINNATI | OH |
| SHELL OIL – 5052 RIVER ROAD | CINCINNATI | OH |
| SHELL OIL – LOADING ARM – 5052 RIVER ROAD | CINCINNATI | OH |
| SHELL OIL – PIPING | CINCINNATI | OH |
| SHELL OIL – PUMP HEADERS | CINCINNATI | OH |
| SHELL OIL – RIVER ROAD | CINCINNATI | OH |
| SHELL OIL – TANK #2 – 5150 RIVER ROAD | CINCINNATI | OH |
| SHELL OIL COMPANY | BELPRE | OH |
| Shell Petroleum Corporation | Cleveland | OH |
| Sheller Globe | Lima | OH |
| SHELLMAN PRODUCTS CORPORATION | MT. VERNON | OH |
| SHELLMAR PRODUCTS | MT. VERNON | OH |
| SHELLMAR PRODUCTS COMPANY | MT. VERNON | OH |
| SHELLY TRACTOR AND TRUCK COMPANY | SHELLY | OH |
| SHENANGO | COLUMBUS | OH |
| SHENANGO INC. | DOVER | OH |
| SHEPHERD CHEMICAL CO | NORWOOD | OH |
| SHERATON ALMS HOTEL | CINCINNATI | OH |
| SHERIFF STREET MARKET AND STORAGE COMPANY | CLEVELAND | OH |
| SHERIUM METALS | TOLEDO | OH |
| SHERMER-SCHNEIDER | CLEVELAND | OH |
| SHERWIN WILLIAMS | ASHTABULA | OH |
| SHERWIN WILLIAMS COMPANY | ASHTABULA | OH |
| SHERWIN-WILLIAMS CO | ASHTABULA | OH |
| SHERWIN-WILLIAMS COMPANY | CLEVELAND | OH |
| SHIELDS-MIDWESTERN | CLEVELAND | OH |
| SHILLITOS DEPARTMENT STORE | CINCINNATI | OH |
| SHILLITOS PARKING GARAGE | CINCINNATI | OH |
| SHULER AND BENNINGHOFEN | HAMILTON | OH |
| SIDNEY STEEL SCRAP AND COMPANY | SIDNEY | OH |
| SIEMENS | LEBANON | OH |
| SIEMENS CORPORATION | NORWOOD | OH |
| SIEMENS-ALLIS | NORWOOD | OH |
| SIGNODE CORPORATION – 49M RIDGE AVENUE | CINCINNATI | OH |
| SILVER FLEECE INC. | PORT CLINTON | OH |
| Simonds Tool Co. | Newcomerstown | OH |
| SIMS LANDMARK FERTILIZER PLANT | MOUNT GILEAD | OH |
| SINCLAIR REFINERY | CLEVELAND | OH |
| SINTON HOTEL | CINCINNATI | OH |
| SISTERS OF CHARITY | CINCINNATI | OH |
| SISTERS OF CHARITY GOOD SAMARITAIN HOSPITAL | DAYTON | OH |
| SISTERS OF CHARITY GOOD SAMARITAN HOSPITAL | DAYTON | OH |
| Skeldon Engineering Company | Toledo | OH |
| Skelly Oil | Ironton | OH |
| SKRL DIE CASTING INC. | EASTLAKE | OH |
| SMITH AGRICULTURAL CHEMICAL COMPANY | COLUMBUS | OH |
| SMITH BREWING COMPANY | YOUNGSTOWN | OH |
| SMITH HUGHES CO | CINCINNATI | OH |
| Smith Lumber Company | Barnesville | OH |
| Smith Warner, Inc. | Cleveland | OH |
| SMITH-ODY | CLEVELAND | OH |
| SMP CASTINGS | WICKLIFFE | OH |
| SMP PRECISIONS | WICKLIFFE | OH |
| SMURFIT DIAMOND PACKING CORP | CINCINNATI/LOCKLAND | OH |
| SMURFIT-STONE CORPORATION | COSHOCTON | OH |
| SMURFIT-STONE CORPORATION, MIDDLETOWN BOXBOARD MILL | MIDDLETOWN | OH |
| SMYLIE BROS CO CEDAR APARTMENTS | CLEVELAND | OH |
| SNAK SHACK | CINCINNATI | OH |
| SNIDER PRESERVE COMPANY | HAMILTON | OH |
| SNOW FILTRATION | CINCINNATI | OH |
| Snyder Bentley Company | Youngstown | OH |
| SOCIETY NAT’L BANK | CLEVELAND | OH |
| SODEXHO | YOUNGSTOWN | OH |
| SOHIO CHEMICAL | LIMA | OH |
| SOHIO CHEMICAL CO | LIMA | OH |
| SOHIO CHEMICAL COMPANY | LIMA | OH |
| Sohio Oil Refinery | Lima | OH |
| SOHIO REFINERY | TOLEDO | OH |
| SOHIO REFINERY & CHEMICAL | LIMA & TOLEDO | OH |
| SOHIO RESEARCH FACILITY | CLEVELAND | OH |
| SOHIO RESEARCH FACILITY | WARRENSVILLE | OH |
| SOLID STEEL COMPANY | ALLIANCE | OH |
| SOLID STEEL COMPANY | CLEVELAND | OH |
| SOLID WASTE AUTHORITY OF CENTRAL OHIO | COLUMBUS | OH |
| SOLON VETERINARY HOSPITAL | SOLON | OH |
| Solvay Process Company | South Point | OH |
| SOLVAY PROCESS COMPANY | IRONTON | OH |
| SOLVAY PROCESS DIVISION, ALLIED CHEMICAL AND DYE CORPORATION | SOUTH POINT | OH |
| SOMERS CORPORATION | CELINA | OH |
| SOMMERFELD HEAT TREATING | CLEVELAND | OH |
| SOMMERS RUBBER | CLEVELAND | OH |
| SONOCO PRODUCTS DIV | MUNROE FALLS | OH |
| SORG PAPER | MIDDLETOWN | OH |
| SORG PAPER CO | MIDDLETOWN | OH |
| Sorg Paper Co. | Middletown | OH |
| SORG PAPER COMPANY | MIDDLETOWN | OH |
| SORG PAPER COMPANY | SOUTH POINT | OH |
| SORG PAPER COMPANY – ZEALITE TANK | MIDDLETOWN | OH |
| SORG PAPER/MOSINEE PAPER | MIDDLETOWN | OH |
| SORG PULP COMPANY | MIDDLETOWN | OH |
| SORG PULP COMPANY, LIMITED | MIDDLETOWN | OH |
| SOUTH BEND CARTON COMPANY | CLEVELAND | OH |
| SOUTH HIGH SCHOOL | WILLOUGHBY | OH |
| SOUTH HIGH SCHOOL | CLEVELAND | OH |
| South Ohio Oil Company | Lima | OH |
| SOUTH ORDNANCE | SOUTH POINT | OH |
| SOUTH POINT ETHANOL | SOUTH POINT | OH |
| SOUTH POINT PLANT | SOUTH POINT | OH |
| SOUTHEASTERN CORRECTIONAL FACILITY | LANCASTER | OH |
| SOUTHERLY SEWAGE | CLEVELAND | OH |
| SOUTHERLY SEWAGE | CUYAHOGA HEIGHTS | OH |
| SOUTHERLY SEWAGE PLANT – BLOWER BLDG. | CLEVELAND | OH |
| SOUTHERLY SEWAGE TREATMENT PLANT | CLEVELAND | OH |
| SOUTHERN ALKALI CORPORATION | BARBERTON | OH |
| SOUTHERN OHIO BANK | CINCINNATI | OH |
| SOUTHERN OHIO CORRECTIONAL INST. | LUCASVILLE | OH |
| SOUTHERN OHIO CORRECTIONAL INSTITUTE | LUCASVILLE | OH |
| SOUTHERN OHIO ELECTRIC COMPANY – FLOODWOOD PLANT | FLOODWOOD | OH |
| SOUTHERN OHIO FABRICATORS, INC. | CINCINNATI | OH |
| SOUTHERN OHIO INSULATION CO. | CHILLICOTHE | OH |
| SOUTHERN PARK MALL – J.C. PENNEY DEPARTMENT STORE | BOURDMAN | OH |
| SOUTHSIDE HOSPITAL | YOUNGSTOWN | OH |
| SOUTHWEST SCHOOL – HIGHHWAY 58 | MOUNT HEALTHY | OH |
| Southwestern Portl Cement Co | Fairborn | OH |
| SOUTHWESTERN PORTLAND CEMENT | OSBORN | OH |
| SOUTHWESTERN PORTLAND CEMENT COMPANY | OSBORN | OH |
| SOUTHWYCK MALL | TOLEDO | OH |
| SOZONIAN VAULT COMPANY | BUCYRUS | OH |
| S-P MFG. | CLEVELAND | OH |
| SPACE COMFORT | CLEVELAND | OH |
| SPECIALTY PROD. | SPENCER | OH |
| SPECIALTY STEELS DIVISION | ZANESVILLE | OH |
| SPENCER MFG | SALEM | OH |
| SPICER MANUFACTURING DIVISION OF DANA CORPORATION | TOLEDO | OH |
| SPIKE IND. | SPRINGFIELD | OH |
| Spiral Binding | Cleveland | OH |
| SPOHN CORP – 3 M CO DI NOC DIV | CLEVELAND | OH |
| SPOHN CORP – TOWER EAST OFFICE BLDG | SHAKER HEIGHTS | OH |
| SPOHN HTG & VENT CO CASE INSTITUTE LIBRARY & HUMANITIES BLDG | CLEVELAND | OH |
| SPRINGDALE PLUMBING | SPRINGDALE | OH |
| SPRINGDALE SAUSAGE PROCESSING – 801 E KEMPER ROAD | CINCINNATI | OH |
| SPRINGFIELD LIGHT HEAT AND POWER COMPANY | SPRINGFIELD | OH |
| SPRINGFIELD MANUFACTURING AND POWER PLANT | SPRINGFIELD | OH |
| SPRINGFIELD MFG. | CANTON | OH |
| SPRINGFIELD RAILWAY COMPANY | SPRINGFIELD | OH |
| SPRINGFIELD TROY AND PRANA INTERERBAN RAILROAD | SPRINGFIELD | OH |
| SPUN STEEL DIV | LORAIN | OH |
| SQUARE D. CO. | CLEVELAND | OH |
| ST JUDD CHURCH | CLEVELAND | OH |
| ST PAUL’S CHURCH | AKRON | OH |
| ST. ALEXIS HOSPITAL | CLEVELAND | OH |
| ST. ANN’S HOSPITAL | CLEVELAND | OH |
| ST. BERNARD HIGH SCHOOL | ST. BERNARD | OH |
| ST. ELIZABETH HOSPITAL | YOUNGSTOWN | OH |
| ST. ELIZABETH HOSPITAL | DAYTON | OH |
| ST. FRANCIS CONVENT | CANTON | OH |
| St. Gerard’s Parish Buildings | Lima | OH |
| ST. JOHN’S HOSPITAL | LAKEWOOD | OH |
| ST. JOSEPH HOSPICE | CANTON | OH |
| ST. JOSEPH HOSPITAL | LORAIN | OH |
| ST. JOSEPH SCHOOL ADDITION | CANTON | OH |
| ST. LUKE’S MEMORIAL HOSPITAL | CLEVELAND | OH |
| ST. MARYS – MUNICIPAL POWER PLANT | ST. MARYS | OH |
| St. Mary’s Manufacturing. Co. | St. Marys | OH |
| ST. MARY’S MUNICIPAL LIGHT AND POWER | ST. MARYS | OH |
| St. Mary’s Municipal Lights Plant | St. Marys | OH |
| ST. MICHAEL’S HOSPITAL | CLEVELAND | OH |
| St. Paul Church | Cincinnati | OH |
| ST. PAUL’S METHODIST CHURCH | TIFFIN | OH |
| ST. REGIS PAPER COMPANY | COSHOCTON | OH |
| ST. RICHARD CATHOLIC SCHOOL | TOLEDO | OH |
| ST. STEPHEN’S EPISCOPAL CHURCH – WEST WOODRUFF AVENUE | COLUMBUS | OH |
| ST. THOMAS AQUINAS HIGH SCHOOL | CANTON | OH |
| ST. THOMAS HOSPITAL | CANTON | OH |
| St. Ursula Convent and Academy | Cincinnati | OH |
| St. Vincent Charity Hospital | Cleveland | OH |
| ST. VINCENT MEDICAL CENTER | TOLEDO | OH |
| ST. VINCENT’S HOSPITAL | TOLEDO | OH |
| ST. VINCENTS HOSPITAL – NEW LAUNDRY BLDG | TOLEDO | OH |
| ST. VINCENTS HOSPITAL – NEW LAUNDRY BLDG 2213 | TOLEDO | OH |
| STALEY MFG. CO | GRAND RIVER | OH |
| STALEY MFG. CO | PAINESVILLE | OH |
| STALEY MFG. CO. | GRAND RIVER | OH |
| STAMBERGER COMPANY | ASHTABULA | OH |
| STANDARAD OIL OFFICE & LAB | CLEVELAND | OH |
| STANDARD ADVERTISING COMPANY | COSHOCTON | OH |
| Standard Asbestos | Cleveland | OH |
| STANDARD ASBESTOS MANUFACTURING & INSULATING CO. | CLEVELAND | OH |
| STANDARD ASBESTOS MANUFACTURING COMPANY | CLEVELAND | OH |
| STANDARD ASBESTOS MFG COMPANY | CLEVELAND | OH |
| Standard Asbestos Mfg. Co. | Cleveland | OH |
| STANDARD BRANDS, INCORPORATED | CINCINNATI | OH |
| STANDARD BRANDS, INCORPORATED | NAPOLEON | OH |
| STANDARD BREWING COMPANY | CLEVELAND | OH |
| STANDARD BRICK COMPANY | CLEVELAND | OH |
| STANDARD CHAIN COMPANY | COLUMBUS | OH |
| STANDARD IRON COMPANY | BRIDGEPORT | OH |
| STANDARD LIGHT AND POWER COMPANY | FOSTORIA | OH |
| STANDARD LIME & REFRACTORIES CO. | WOODVILLE | OH |
| Standard Lime & Stone Co. | Woodville | OH |
| Standard Oil | Toledo | OH |
| Standard Oil | Lima | OH |
| Standard Oil | Cleveland | OH |
| STANDARD OIL | OREGON | OH |
| STANDARD OIL | LORAIN | OH |
| STANDARD OIL – LIMA REFINERY | LIMA | OH |
| STANDARD OIL (SOHIO) | TOLEDO | OH |
| STANDARD OIL CO | LIMA | OH |
| STANDARD OIL CO | CLEVELAND | OH |
| STANDARD OIL CO OF OHIO | LIMA | OH |
| STANDARD OIL CO OF OHIO | TOLEDO | OH |
| STANDARD OIL CO. | LIMA | OH |
| Standard Oil Co. of Ohio | Cleveland | OH |
| STANDARD OIL COMPANY | OREGON | OH |
| STANDARD OIL COMPANY | TOLEDO | OH |
| STANDARD OIL COMPANY | CLEVELAND | OH |
| STANDARD OIL COMPANY | LIMA | OH |
| STANDARD OIL COMPANY – PILOT PLANT | CLEVELAND | OH |
| STANDARD OIL COMPANY – #1 REFINERY | CLEVELAND | OH |
| STANDARD OIL COMPANY – PETRO CHEMICALS DIVISION | LIMA | OH |
| STANDARD OIL COMPANY – REFINERY WAREHOUSE | TOLEDO | OH |
| STANDARD OIL COMPANY – RESEARCH DEPARTMENT | CLEVELAND | OH |
| STANDARD OIL COMPANY – TOLEDO REFINERY | TOLEDO | OH |
| STANDARD OIL COMPANY OF OHIO | CLEVELAND | OH |
| Standard Oil Company Of Ohio | Lima | OH |
| STANDARD OIL COMPANY OF OHIO | TOLEDO | OH |
| STANDARD OIL COMPANY PILOT PLANT | CLEVELAND | OH |
| STANDARD OIL COMPANY RESEARCH | CLEVELAND | OH |
| STANDARD OIL COMPANY RESEARCH | WARRENSVILLE | OH |
| STANDARD OIL OF OHIO & REFINERY | CLEVELAND | OH |
| STANDARD OIL OFFICE & LAB BLDG. | CLEVELAND | OH |
| Standard Oil Refinery | Lima | OH |
| Standard Oil Refinery | Toledo | OH |
| Standard Oil Refinery | Oregon | OH |
| Standard Oil Refinery | Cleveland | OH |
| STANDARD OIL RESEARCH | CLEVELAND | OH |
| STANDARD OIL RESEARCH | WARRENSVILLE HEIGHTS | OH |
| STANDARD OIL RESEARCH | WARRENSVILLE | OH |
| STANDARD PIPING | CLEVELAND | OH |
| STANDARD PRODUCTS COMPANY | PORT CLINTON | OH |
| STANDARD REGISTER COMPANY – NEWARK INDUSTRIAL PARK – BUILDING 10 | HEATH | OH |
| STANDARD REGISTER COMPANY, NEWARK INDUSTRIAL PARK, BUILDING 10 | HEATH | OH |
| STANDARD RESEARCH CENTER – CHEMICAL RESEARCH | CLEVELAND | OH |
| STANDARD SILICATE COMPANY | CINCINNATI | OH |
| STANDARD STEEL SPRING COMPANY, NEWTON FALLS DIVISION | NEWTON FALLS | OH |
| STANDARD STEEL SPRING DIVISION, ROCKWELL SPRING AND AXEL COMPANY | NEWTON FALLS | OH |
| STANDARD TIRE COMPANY | WILLOUGHBY | OH |
| STANDARD TOOL COMPANY | CLEVELAND | OH |
| STANDARD WELDING COMPANY | CLEVELAND | OH |
| STAR RUBBER COMPANY | AKRON | OH |
| STARK COAL COMPANY | NAVARRE | OH |
| STARK COUNTY JAIL | CANTON | OH |
| STARK ELECTRIC COMPANY – POWER PLANT | ALLIANCE | OH |
| STARK ROLLING MILL COMPANY | CANTON | OH |
| STARK SCHOOL – BURNS SCHOOL | CANTON | OH |
| STARR CTY JAIL – C-1058 | CLEVELAND | OH |
| STATE OF OHIO | NORTHFIELD | OH |
| STATE OF OHIO | OXFORD | OH |
| State Office Tower | Columbus | OH |
| State Theatre | Marcus Loew | OH |
| Statler Hotel | Cleveland | OH |
| STAUFFER CHEMICAL | MORAINE | OH |
| STAUFFER CHEMICAL CO. | ASHTABULA | OH |
| STAUFFER CHEMICAL COMPANY | PERRY | OH |
| STD OIL CO | CLEVELAND | OH |
| STD OIL PILOT PLANT | CLEVELAND | OH |
| STEAM VANADIUM CORP. | CANTON | OH |
| STEAMER DM CLEMSON | CLEVELAND | OH |
| STEARNS AND FOSTER | LOCKLAND | OH |
| STEARNS AND FOSTER COMPANY | LOCKLAND | OH |
| STEARNS AND FOSTER COMPANY | CINCINNATI | OH |
| STEARNS TECHNICAL TEXTILE COMPANY | CINCINNATI | OH |
| STEARNS TECHNICAL TEXTILE COMPANY | LOCKLAND | OH |
| STEEL BUILDINGS COMPANY | CLYDE | OH |
| Steel City Bldg Center | Toledo | OH |
| STEEL DOOR | YOUNGSTOWN | OH |
| STEEL IMPROVEMENT | NORTH ROYALTON | OH |
| STEEL IMPROVEMENT & FORGE CO | CLEVELAND | OH |
| STEEL MAKING AREA BASIC OXYGEN SHOP | MIDDLETOWN | OH |
| STEELCRAFT MANUFACTURING COMPANY | BLUE ASH | OH |
| STEELE HIGH SCHOOL | DAYTON | OH |
| STEINMAN AND MEYER FURNITURE COMPANY | CINCINNATI | OH |
| STERLING GRINDING WHEEL COMPANY | TIFFIN | OH |
| STERLING PAPER COMPANY | HAMILTON | OH |
| Sterling Salem Company | Salem | OH |
| STERLING WORKS | BARBERTON | OH |
| STEUBENVILLE ICE COMPANY | STEUBENVILLE | OH |
| STEUBENVILLE MINGO AND OHIO VALLEY TRACT COMPANY | BRILLIANT | OH |
| Steubenville Roofing | Steubenville | OH |
| STEUBENVILLE TRACTION AND LIGHT COMPANY – POWER HOUSE | STEUBENVILLE | OH |
| STEUBENVILLE WORKS – NORTH DIVISION | VEE | OH |
| STEVENS PAINTON CO. | SIDNEY | OH |
| Stewart Bolling Company | Cleveland | OH |
| STILLWELL-BIERCE AND SMITH VAILE COMPANY | DAYTON | OH |
| STIRLING GRINDING COMPANY | TIFFIN | OH |
| STIRLING GRINDING WHEEL DIVISION OF CLEVELAND QUARRIES COMPANY | TIFFIN | OH |
| STIVERS MANUAL TRAINING HIGH SCHOOL | DAYTON | OH |
| STODDARD MANUFACTURING COMPANY | DAYTON | OH |
| STOKLEY FOODS INCORPORATED | CURTICE | OH |
| STOKLEY VAN CAMP COMPANY | PAULING | OH |
| STOLLE CO. | CLEVELAND | OH |
| Stolle Corp. | Sidney | OH |
| STONE & WEBSTER AGENT FOR | EUCLID | OH |
| Stone Container | Coshocton | OH |
| STONE CONTAINER CORPORATION | COSHOCTON | OH |
| STONE CONTAINER CORPORATION | MT. VERNON | OH |
| STONE CONTAINER CORPORATION, BOXBOARD MILLS DIVISION | FRANKLIN | OH |
| STONE CONTAINER CORPORATION, COSHOCTON DIVISION | COSHOCTON | OH |
| STOP-N-GO MARKET | WHEELERSBURG | OH |
| STOP-N-GO MARKET | MASSILLON | OH |
| STOUDER MEMORIAL HOSPITAL | TROY | OH |
| STOUFFER FOODS | SOLON | OH |
| STOUFFER’S BUILDING | SOLON | OH |
| STRATFORD HOUSE MOTOR HOTEL | DAYTON | OH |
| Stratton Power Station | Stratton | OH |
| STRIETMANN BISCUIT COMPANY | MARIEMONT | OH |
| Strimpu Nick, Inc. | Brookfield | OH |
| STRONG CARLISLE & HAMMOND | CLEVELAND | OH |
| STRONG, CARLISLE & HAMMOND CO. | CLEVELAND | OH |
| Structuralite | Hebron | OH |
| STRUTHERS FINANCE COMPANY | STRUTHERS | OH |
| STRUTHERS FURNACE COMPANY | STRUTHERS | OH |
| STRUTHERS FURNACE COMPANY | CLEVELAND | OH |
| STRUTHERS ICE COMPANY | STRUTHERS | OH |
| STRUTHERS IRON AND STEEL COMPANY | STRUTHERS | OH |
| STRUTHERS WORKS | STRUTHERS | OH |
| STUART`S STORE – NORTHGATE MALL | CINCINNATI | OH |
| Styro Fabricators | Sandusky | OH |
| SUBURBAN HEATING – CLARK AVE BRIDGE – BLAST FURNACE AREA UNDERNEATH | CLEVELAND | OH |
| SUBURBAN LIGHT AND POWER COMPANY | ALLIANCE | OH |
| SUBURBAN POWER | BABERTON | OH |
| Suburban Power Piping | Cleveland | OH |
| SUBURBAN TRACTION COMPANY | CINCINNATI | OH |
| SUCHER PACKING COMPANY | DAYTON | OH |
| SUN COMPANY, INCORPORATED | OREGON | OH |
| SUN CORP | SPRINGFIELD | OH |
| Sun Oil | Toledo | OH |
| Sun Oil Co. | Oregon | OH |
| Sun Oil Co. | Toledo | OH |
| SUN OIL COMPANY | TOLEDO | OH |
| SUN OIL COMPANY | SWANTON | OH |
| SUN OIL COMPANY | LIMA | OH |
| SUN OIL COMPANY | OREGON | OH |
| SUN OIL COMPANY – MALLEABLE STOREHOUSE | TOLEDO | OH |
| SUN OIL COMPANY – PLANT #3 | TOLEDO | OH |
| SUN OIL COMPANY – PLANT #5 | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY 1 STORE ROOM | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY STORE | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY STOREHOUSE | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY STORES | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY WAREHOUSE | TOLEDO | OH |
| SUN OIL COMPANY – REFINERY WAREHOUSE WING C | TOLEDO | OH |
| SUN OIL COMPANY – REFINING WAREHOUSE | TOLEDO | OH |
| SUN OIL COMPANY – TOLEDO REFINERY | TOLEDO | OH |
| SUN OIL COMPANY – TOLEDO REFINERY – GENERAL TOWER | TOLEDO | OH |
| SUN OIL COMPANY – TOLEDO REFINERY STORES | TOLEDO | OH |
| SUN OIL COMPANY – WOODVILLE ROAD | TOLEDO | OH |
| SUN OIL COMPANY REFINERY | TOLEDO | OH |
| SUN OIL COMPANY REFINERY – PLANT 9 | TOLEDO | OH |
| SUN OIL COMPANY REFINERY – WOODVILLE ROAD | TOLEDO | OH |
| Sun Oil Company- Toledo Refinery | Toledo | OH |
| SUN OIL PLANT | TOLEDO | OH |
| Sun Oil Refinery | Oregon | OH |
| Sun Petroleum Company | Oregon | OH |
| SUNCRAFT PRODUCTS | CLEVELAND | OH |
| SUNLIGHT CREAMERIES – WASHINGTON COURT HOUSE PLANT | WASHINGTON COURT HOUSE | OH |
| SUNOCO COMPANY | OREGON | OH |
| SUNOCO, INCORPORATED | HAVERHILL | OH |
| SUPERIOR BRASS | CLEVELAND | OH |
| SUPERIOR BUILDING | CLEVELAND | OH |
| SUPERIOR CAST | CLEVELAND | OH |
| Superior Cement | Ironton | OH |
| Superior Coach Co. | Lima | OH |
| SUPERIOR DAIRY COMPANY | CANTON | OH |
| SUPERIOR DAIRY, INCORPORATED | CANTON | OH |
| SUPERIOR DIE | YOUNGSTOWN | OH |
| SUPERIOR DIE CASTING | CLEVELAND | OH |
| SUPERIOR INDUSTRIES | CLEVELAND | OH |
| SUPERIOR METAL TREATING | CLEVELAND | OH |
| SUPERIOR SHEET STEEL COMPANY | CANTON | OH |
| SUPERIOR’S BRAND MEATS, INCORPORATED | MASSILLON | OH |
| Sur Seal Gasket & Packing | Cincinnati | OH |
| Surface Combustion | Toledo | OH |
| SURFACE COMBUSTION | MIDDLETOWN | OH |
| SURFACE COMBUSTION CORP | TOLEDO | OH |
| Sussman Asbestos Company | Toledo | OH |
| SWASEY CO BOILER HOUSE | CLEVELAND | OH |
| SWELAND BUILDING | CLEVELAND | OH |
| SWIFT & CO. | COLUMBUS | OH |
| Swift & Company | Greenville | OH |
| SWIFT AND COMPANY | CLEVELAND | OH |
| SWIFT AND COMPANY | COLUMBUS | OH |
| SWIFT DRY CLEANERS | CLEVELAND | OH |
| Swift Edible Oil Company | Fostoria | OH |
| SYCAMORE MEDICAL CENTER | MIAMISBURG | OH |
| SYLVANIA ELECTRIC CO. | OTTAWA | OH |
| SYLVESTER & CO | CLEVELAND | OH |
| SZERE PULP AND PAPER COMPANY | FRANKLIN | OH |
| T. GRAY AND COMPANY | PIQUA | OH |
| T. O. MURPHY CO. – PRODUCTION APPLICATION LAB. | AVON LAKE | OH |
| T. O. MURPHY CO. – WAREHOUSE | OBERLIN | OH |
| T.J. COOKSON | CINCINNATI | OH |
| T.J. HANLEY | COSHOCTON | OH |
| T.O. MURPHY WAREHOUSE C/O CLARK | OBERLIN | OH |
| T.R.W. Inc | Minerva | OH |
| T.R.W., BUILDING 1, 23555 EUCLID AVE. | EUCLID | OH |
| T.R.W., INCORPORATED, 23555 EUCLID AVE. | CLEVELAND | OH |
| T.R.W., METALS DIVISION | MINERVA | OH |
| T.R.W., TAPCO DIVISION BUILDING #19 & #24 | EUCLID | OH |
| TADD SPRING | STRONGSVILLE | OH |
| TADD SPRING | HICKLEY | OH |
| Tait Power Plant, DP&L | Dayton | OH |
| Tait Power Plant, DP&L | Miamisburg | OH |
| TAMERS CREEK | CINCINNATI | OH |
| TAMPA BAY ENGINEERS | TIFFIN | OH |
| TANKER TRANSWAY | LORAIN | OH |
| TANKER TRANSWAY | LORIAN | OH |
| TANNERS CREEK | CINCINNATI | OH |
| TAPPAN STOVE CO | MANSFIELD | OH |
| TAYLOR | WARREN | OH |
| TAYLOR AND THOMAS | NILES | OH |
| TAYLOR CHAIR COMPANY | BEDFORD | OH |
| TAYLOR SONS CO CHARLES | CINCINNATI | OH |
| TEC LAB | CLEVELAND | OH |
| TECHNICAL CENTER | GRANVILLE | OH |
| TECHNICAL RESEARCH CENTER | GRANVILLE | OH |
| TELEDYNE | UNIONTOWN | OH |
| TELEDYNE C.A.E. | TOLEDO | OH |
| TELEDYNE CAE | TOLEDO | OH |
| TELEDYNE ISOTOPES, NASA | SANDUSKY | OH |
| TELEDYNE MONARCH RUBBER COMPANY | HARTVILLE | OH |
| Teledyne Ohio Steel | Lima | OH |
| Teledyne Precision | Cincinnati | OH |
| TELLING BELLE VERNON COMPANY | WELLINGTON | OH |
| TEMPERATURE CONTROL | AKRON | OH |
| Temple of Healing Stripes | Akron | OH |
| TENNIS RAILWAY EQUIPMENT COMPANY | CINCINNATI | OH |
| TEREX | HUDSON | OH |
| TEREX | CLEVELAND | OH |
| TERMINAL TOWER | CLEVELAND | OH |
| Terminal Tower Complex | Cleveland | OH |
| TERMINAL TOWER, PROSPECT AVE. | CLEVELAND | OH |
| TERNSTEDT DIV | ELYRIA | OH |
| TERNSTEDT DIVISION | ELYRIA | OH |
| Ternstedt Division – G M C New Boiler House | Elyria | OH |
| TERNSTEDT DIVISION, GENERAL MOTORS CORPORATION | CLEVELAND | OH |
| TERNSTEDT DIVISION, GENERAL MOTORS CORPORATION | COLUMBUS | OH |
| TERRACE HILTON HOTEL | CINCINNATI | OH |
| Terrace Plaza Hotel | Cincinnati | OH |
| TERSTEDT DIVISION GMC | COLUMBUS | OH |
| TEXAS EASTERN TRANSMISSION CORPORATION | ATHENS | OH |
| TEXTILE LEATHER COMPANY | TOLEDO | OH |
| Textileather Corporation | Toledo | OH |
| TG&Y STORE – TUSK AVENUE AND SECOND STREET | DOVER | OH |
| The Alloy Cast Steel Company | Marion | OH |
| THE AMERICAN ROLLING MILL COMPANY | DAYTON | OH |
| The Clark Asbestos Co | Cleveland | OH |
| THE CLEVE. TRENCHER CO. | CLEVELAND | OH |
| THE FACTORY POWER COMPANY | CINCINNATI | OH |
| The Federal Glass Co. Division of Federal Paper Board Co., Inc. | Columbus | OH |
| THE JOHNSON RUBBER COMPANY | MIDDLEFIELD | OH |
| THE LANLY CO. | CLEVELAND | OH |
| The Leetonia Tool Company | Leetonia | OH |
| The Marblecliff Quarries Company | Lewisburg | OH |
| THE MATHER COMPANY METAL | TOLEDO | OH |
| THE ODY CO. | CLEVELAND | OH |
| The Ohio Asbestos & Insulation Company | Cleveland | OH |
| The Ohio Metal & Mfg Co | Dayton | OH |
| THE OHIO STATE UNIVERSITY – UNIVERSITY HALL | COLUMBUS | OH |
| THE PHILIP CAREY MANUFACTURING CO. | LOCKLAND | OH |
| THE PIPE MACHINERY COMPANY PLANT | WICKLIFFE | OH |
| The Scioto Paper Company | Columbus | OH |
| THE TIMKEN COMPANY | CANTON | OH |
| THE WITT CO | CINCINNATI | OH |
| THEATRICAL EQUIPMENT | CLEVELAND | OH |
| THEODOR KUNDTZ COMPANY | CLEVELAND | OH |
| THEODORE ROOSEVELT HIGH SCHOOL – NORTH MANATUA STREET | KENT | OH |
| THEODORE ROOSEVELT SCHOOL | KENT | OH |
| THERMOPLASTICS | CLEVELAND | OH |
| THEW AUTOMATIC SHOVEL COMPANY | LORAIN | OH |
| THOMAS EMERY SONS, INCORPORATED | CINCINNATI | OH |
| THOMAS FURNACE COMPANY | NILES | OH |
| THOMAS JEFFERSON ELEM.SCHOOL | ASHTABULA HARBOR | OH |
| THOMAS JEFFERSON ELEMENTARY SCHOOL | ASHTABULA | OH |
| THOMAS PHILLIPS COMPANY | AKRON | OH |
| Thomas Steel | Warren | OH |
| THOMAS STEEL | YOUNGSTOWN | OH |
| THOMAS STEEL COMPANY | WARREN | OH |
| THOMAS STEEL COMPANY | NILES | OH |
| THOMAS STEEL STRIP CORP | WARREN | OH |
| THOMAS T. GAFF | CINCINNATI | OH |
| THOMAS WILSON | LORAIN | OH |
| THOMPSON PRODUCTS | CLEVELAND | OH |
| THOMPSON PRODUCTS | EUCLID | OH |
| THOMPSON PRODUCTS – BLDG.#31 | CLEVELAND | OH |
| THOMPSON PRODUCTS – BUILDING #15 | EUCLID | OH |
| THOMPSON PRODUCTS – BUILDING #22 | EUCLID | OH |
| THOMPSON PRODUCTS – GAS TURBINE LABORATORY | PERRY | OH |
| THOMPSON PRODUCTS – MAINTENANCE STOCK ROOM | EUCLID | OH |
| THOMPSON PRODUCTS COMPANY | CLEVELAND | OH |
| THOMPSON PRODUCTS WILLOUGHBY WORKS | WILLOUGHBY | OH |
| THOMPSON PRODUCTS, INC. (a/k/a TRW, Inc.) | CLEVELAND | OH |
| Thompson Ramo Products | Cleveland | OH |
| THOMPSON RAMO WOOLDBRIDGE | CLEVELAND | OH |
| THOMPSON RAMO WOOLDBRIDGE | EUCLID | OH |
| THOMPSON RAMO WOOLDBRIDGE – DOCK 5 | CLEVELAND | OH |
| THOMPSON RAMO WOOLDBRIDGE – R W VALVE DIV | CLEVELAND | OH |
| THOMPSON RAMO WOOLDBRIDGE – VALVE DIVISION | CLEVELAND | OH |
| THOMPSON RAMO-WOOLRIDGE, INC | EUCLID | OH |
| THORNTON COMPANY | CLEVELAND | OH |
| THOS PHILLIPS COMPANY | AKRON | OH |
| TIDD POWER PLANT | BRILLIANT | OH |
| Tiffen Glass | Tiffen | OH |
| TIFFIN EDISON ELECTRIC ILLUMINATING COMPANY – POWER STATION | TIFFIN | OH |
| TIFFIN STATE HOSPITAL | TIFFIN | OH |
| Tile Tite | Cleveland | OH |
| Tillotson Manufacturing Company | Toledo | OH |
| TIMBEN ROLLER BEARING COMPANY | COLUMBUS | OH |
| TIMET METAL CORPORATION OF AMERICA | TORONTO | OH |
| Timken | Columbus | OH |
| Timken Co. | Canton | OH |
| Timken Co. | Massillon | OH |
| TIMKEN “DUEBER” BEARING | CANTON | OH |
| TIMKEN “GAMBRINUS” BEARING PLANT | CANTON | OH |
| TIMKEN BEARING | New Philadelphia | OH |
| Timken Co. | Warren | OH |
| TIMKEN MERCY HOSPITAL | CANTON | OH |
| TIMKEN MERCY MEDICAL CENTER | CANTON | OH |
| Timken Roller | Canton | OH |
| Timken Roller Bearing | Canton | OH |
| TIMKEN ROLLER BEARING CO | BUCYRUS | OH |
| Timken Roller Bearing Company | Canton | OH |
| TIMKEN ROLLER BEARING COMPANY | COLUMBUS | OH |
| TIMKEN ROLLER BEARING COMPANY | GAMBRINUS | OH |
| Timken Steel | Canton | OH |
| TIMKEN STEEL – HARRISON PLANT | CANTON | OH |
| TIMKEN STEEL HARRISON PLANT | CANTON | OH |
| TIMMS SPRING | ELYRIA | OH |
| Tinnerman Products Co. | Parma | OH |
| TIPPECANOE CITY – WATER AND ELECTRIC LIGHT PLANT | TIPPECANOE CITY | OH |
| TITANIUM METALS | TORONTO | OH |
| TITANIUM METALS CORP OF A | TORONTO | OH |
| TITANIUM METALS CORP OF AMERICA | TORONTO | OH |
| TITANIUM METALS CORPORATION | TORONTO | OH |
| Titanium Metals Corporation Of America | Toronto | OH |
| TODD INSULATION & REMODELING | YOUNGSTOWN | OH |
| TODD WELDING CO. | CLEVELAND | OH |
| TOLEDO AND INDIANA RAILROAD | TOLEDO | OH |
| TOLEDO AND INDIANA RAILROAD COMPANY | STRYKER | OH |
| TOLEDO AND OHIO CENTRAL RAILROAD | KENTON | OH |
| TOLEDO AND WESTERN RAILWAY | SYLVANIA | OH |
| TOLEDO AND WESTERN RAILWAY | TOLEDO | OH |
| TOLEDO BAWLING GREEN AND SOUTHERN TRACTION COMPANY | CYGNET | OH |
| TOLEDO BEE COMPANY | TOLEDO | OH |
| Toledo Blade | Toledo | OH |
| TOLEDO BOLT AND NUT COMPANY | TOLEDO | OH |
| TOLEDO BREWING AND MALTING COMPANY | TOLEDO | OH |
| TOLEDO BRIDGE AND CRANE COMPANY | TOLEDO | OH |
| TOLEDO CLINIC – 4235 SECOR ROAD | TOLEDO | OH |
| TOLEDO CLINIC, 4235 SECOR RD. | TOLEDO | OH |
| TOLEDO CONSOLIDATED STREET RAILWAY COMPANY | TOLEDO | OH |
| TOLEDO DISPOSAL COMPANY | WEST TOLEDO | OH |
| Toledo Edison | Toledo | OH |
| TOLEDO EDISON – ACME POWER PLANT | Toledo | OH |
| TOLEDO EDISON – WATER STREET STATION | TOLEDO | OH |
| TOLEDO EDISON CO – ACME PLT STOREROOM | TOLEDO | OH |
| TOLEDO EDISON CO – ACME STATION | TOLEDO | OH |
| TOLEDO EDISON CO – ACME STATION STOREROOM | TOLEDO | OH |
| TOLEDO EDISON CO – ACME STORE ROOM | TOLEDO | OH |
| TOLEDO EDISON CO – ACME STORE ROOM – LUCAS CTY | TOLEDO | OH |
| TOLEDO EDISON CO – BAYSHORE STATION | OREGON | OH |
| TOLEDO EDISON CO – BAYSHORE STATION | TOLEDO | OH |
| TOLEDO EDISON CO – BAYSHORE STATION – T & H VESTIBULE | TOLEDO | OH |
| TOLEDO EDISON CO. – ACME STATION | TOLEDO | OH |
| TOLEDO EDISON CO. – BAY SHORE PLANT | Oregon | OH |
| TOLEDO EDISON CO. – BAY SHORE PLANT | Oregon | Ohio |
| TOLEDO EDISON CO. – BAYSHORE STATION | TOLEDO | OH |
| Toledo Edison Company | Dilles Bottom | OH |
| TOLEDO EDISON COMPANY – BAY SHORE POWER PLANT | OREGON | OH |
| TOLEDO EDISON COMPANY – DAVIS-BESSE NUCLEAR POWER PLANT | OAK HARBOR | OH |
| Toledo Edison Company- Acme Station | Toledo | OH |
| TOLEDO EDISON COMPANY, ACME STATION | TOLEDO | OH |
| TOLEDO EDISON COMPANY, BAYSHORE STATION | OREGON | OH |
| TOLEDO EDISON COMPANY, DAVIS BESSE PLANT | PORT CLINTON | OH |
| TOLEDO EDISON COMPANY, PLANT X | TOLEDO | OH |
| TOLEDO FURNACE | TOLEDO | OH |
| TOLEDO FURNACE COMPANY | TOLEDO | OH |
| TOLEDO FURNANCE COMPANY | TOLEDO | OH |
| TOLEDO GAS, ELECTRIC AND HEATING COMPANY – POWER PLANT | TOLEDO | OH |
| TOLEDO GRAIN AND MILLING COMPANY | TOLEDO | OH |
| TOLEDO HEATING AND LIGHTING COMPANY – POWER PLANT | TOLEDO | OH |
| TOLEDO HOSPITAL | TOLEDO | OH |
| TOLEDO HOSPITAL – 2142 NORTH COVE BOULEVARD | TOLEDO | OH |
| TOLEDO HOSPITAL, 2142 NORTH COVE BLVD. | TOLEDO | OH |
| TOLEDO MACHINE AND TOOL COMPANY | TOLEDO | OH |
| TOLEDO MACHINE TOOL COMPANY | TOLEDO | OH |
| TOLEDO MARINE TERMINALS, INC. | TOLEDO | OH |
| TOLEDO MASSILLON BRIDGE COMPANY | TOLEDO | OH |
| TOLEDO NEWSPAPER COMPANY | TOLEDO | OH |
| TOLEDO POST CEMENT COMPANY | TOLEDO | OH |
| Toledo Public Schools | Toledo | OH |
| TOLEDO RAILWAYS AND LIGHT COMPANY – WATER STREET STATION | TOLEDO | OH |
| TOLEDO REFINERY | TOLEDO | OH |
| Toledo Shipbuilding Co | Toledo | OH |
| TOLEDO SHOT DIV | TOLEDO | OH |
| TOLEDO STATE HOSPITAL | TOLEDO | OH |
| TOLEDO STEEL CASTING COMPANY | TOLEDO | OH |
| TOLEDO STEEL TUBE, 8201 W. CENTRAL AVE. | TOLEDO | OH |
| TOLEDO STORAGE AND INCORPORATED COMPANY | TOLEDO | OH |
| TOLEDO STORAGE ICE COMPANY | TOLEDO | OH |
| TOLEDO URBAN AND INTERURBAN RAILWAY DO. | FINDLAY | OH |
| TOLEDO, BOWLING GREEN AND SOUTHERN RAILWAY COMPANY | FINDLAY | OH |
| TOLEDO, BOWLING GREEN AND SOUTHERN TRACTION COMPANY | FINDLAY | OH |
| TOLEDO, COLUMBUS AND CINCINNATI RAILWAY COMPANY | TOLEDO | OH |
| TOLEDO, FOSTORIA AND FINDLAY RAILWAY | FOSTORIA | OH |
| TOLEDO, PORT CLINTON AND LAKESIDE RAILWAY | PORT CLINTON | OH |
| TOLEDO, ST LOUIS AND WESTERN RAILROAD COMPANY | TOLEDO | OH |
| TOMCO METAL | CLEVELAND | OH |
| TOOL STEEL GEAR & PINTON | CINCINNATI | OH |
| TOOL STEEL GEAR AND PINION | CINCINNATI | OH |
| TOOL STREEL GEAR & PINION COMPANY | ELMWOOD | OH |
| Topco Company | Salem | OH |
| TOROIDAL WINDING | EUCLID | OH |
| TORONTO PAPER MANUFACTURING COMPANY | TORONTO | OH |
| TORONTO PAPER MILLS | TORONTO | OH |
| TORONTO POWER STATION | TORONTO | OH |
| TOTAL ENERGY PLANT | AKRON | OH |
| TOTES INCORPORATED | LOVELAND | OH |
| TOWER EAST | SHAKER HEIGHTS | OH |
| TOWER EAST OFFICE BLDG | SHAKER HEIGHTS | OH |
| TOWMOTOR | CLEVELAND | OH |
| TOWMOTOR CORPORATION | MENTOR | OH |
| Town of Gahanna – Wastewater Treatment Plant | Gahanna | OH |
| TRACTION BUILDING | CINCINNATI | OH |
| TRAILER COMPANY OF AMERICA | CINCINNATI | OH |
| TRAILMOBILE | CINCINNATI | OH |
| Transfue & Williams | Alliance | OH |
| Transmission Division | Toledo | OH |
| TRANSPORTATION OFFICE | COLUMBUS | OH |
| TRANSPORTATION OFFICE ACC – DCSC AC HI – REQN | COLUMBUS | OH |
| TRANSUE AND WILLIAMS STEEL FORGING COMPANY | ALLIANCE | OH |
| TRANSUE AND WILLLIAMS COMPANY | ALLIANCE | OH |
| TRAY LAUNDRY COMPANY | CLEVELAND | OH |
| TRESLER OIL TANK – 4015 RIVER ROAD | CINCINNATI | OH |
| Tri Cash & Carry Lumber Co | Canfield | OH |
| Tri Cash & Carry Lumber Co | Cortland | OH |
| TRI WAY SCHOOL | CANTON | OH |
| TRI-STATE RAILWAY AND ELECTRIC COMPANY – POWER HOUSE | STEUBENVILLE | OH |
| TRIUMPH MANUFACTURING COMPANY | CINCINNATI | OH |
| Tropical Paint | Cleveland | OH |
| TROY CARRIAGE SUN SHADE COMPANY | TROY | OH |
| TROY ELECTRIC PLANT | TROY | OH |
| TROY LAUNDERING COMPANY | COLUMBUS | OH |
| TROY LAUNDRY COMPANY | CLEVELAND | OH |
| Troy Municiple Power- City Of Troy | Troy | OH |
| TROY SUNSHADE COMPANY | TROY | OH |
| TRUE TEMPER CORP | CLEVELAND | OH |
| TRUE TEMPER CORPORATION | GENEVA | OH |
| True Temper Corporation | Saybrook | OH |
| True Temper Group | Ashtabula | OH |
| TRUMBULL CLIFFS FURNACE COMPANY | WARREN | OH |
| TRUMBULL COUNTY HOSPITAL | WARREN | OH |
| TRUMBULL PUBLIC SERVICE COMPANY | WARREN | OH |
| TRUMBULL PUBLIC SERVICES COMPANY | WARREN | OH |
| TRUMBULL SERVICE COMPANY | WARREN | OH |
| Trumbull Steel | Warren | OH |
| TRUMBULL STEEL COMPANY | WARREN | OH |
| Trumbull Supply And Manufacturing | Warren | OH |
| TRUSCON STEEL COMPANY | YOUNGSTOWN | OH |
| TRUSSED CONCRETE STEEL COMPANY | YOUNGSTOWN | OH |
| TRW | CLEVELAND | OH |
| TRW EUCLID POWERHOUSE | EUCLID | OH |
| TRW Factory | Cleveland | OH |
| TRW INC | CLEVELAND | OH |
| TRW INC. | CLEVELAND | OH |
| TRW INCORPORATED – 23555 EUCLID AVENUE | CLEVELAND | OH |
| TRW Valve | Cleveland | OH |
| TRW, INC. | CLEVELAND | OH |
| TRW, INC. | EUCLID | OH |
| TRW, INC. | WILLOUGHBY | OH |
| TRW, INCORPORATED | CLEVELAND | OH |
| TUCKER, ANTHONY AND COMPANY | HEBRON | OH |
| TURBO BLOWER & STEAM GENERATING FAC – LORAIN WORKS | LORAIN | OH |
| Turbojet Systems Inc | Perrysburg | OH |
| TUSCARAWAS VALLEY HIGH SCHOOL | CANTON | OH |
| TUSCARAWAS VALLEY HS | ZOARSVILLE | OH |
| TWINSBURG PUMPING STATION | CANTON | OH |
| TWINSBURG PUMPING STATION HEATING | CANTON | OH |
| TYHIS GARDNER PAPER AND MANUFACTURING COMPANY | MIDDLETOWN | OH |
| Tyler Manufacturing | Mentor | OH |
| Tyson Reiler Bearing | Masellton | OH |
| Tyson Roller Bearing | Hasellton | OH |
| TYSON ROLLER BEARING CORPORATION | MASSILLON | OH |
| TYTUS PAPER COMPANY | MIDDLETOWN | OH |
| U S GYPSUM CO | GENOE | OH |
| U S REDUCTION | TOLEDO | OH |
| U S REDUCTION CO | TOLEDO | OH |
| U S STEEL CORP | LORAIN | OH |
| U S STEEL CORP | CLEVELAND | OH |
| U S STEEL TUBE | LORAIN | OH |
| U. S. ARMY RESERVE CENTER | CLEVELAND | OH |
| U. S. GYPSUM CO. | GENOA | OH |
| U. S. INDUSTRIAL CHEMICAL CO | ASHTABULA | OH |
| U. S. INDUSTRIAL CHEMICAL CO – METAL REDUCTION PLANT | ASHTABULA | OH |
| U. S. POST OFFICE BLDG | TOLEDO | OH |
| U. S. POST OFFICE BUILDING | TOLEDO | OH |
| U. S. POST OFFICE TERMINAL | CINCINNATI | OH |
| U. S. POST OFFICE TERMINAL – ANNEX BLDG A | CINCINNATI | OH |
| U. S. RUBBER CO – NANGATUCK CHEMICAL DIVISION | PAINESVILLE | OH |
| U. S. RUBBER COMPANY, INC. | PAINESVILLE | OH |
| U. S. STEEL CORPORATION – CUYAHOGA WORKS – BOILER ROOM | CLEVELAND | OH |
| U. S. STEEL CORPORATION – MCDONALD MILLS | MCDONALD | OH |
| U. S. STEEL CORPORATION – MCDONALD WORKS | MCDONALD | OH |
| U. S. STEEL CORPORATION – OHIO WORKS | YOUNGSTOWN | OH |
| U.S. CERAMIC TILE | E. SPARTA | OH |
| U.S. Gypsum Co. | Gypsum | OH |
| U.S. Industrial Chemical Corp. | Ashtabula | OH |
| U.S. Naval Ordnance Plant | Canton | OH |
| U.S. Plywood Champion Pa. | Hamilton | OH |
| U.S. REDUCTION | TOLEDO | OH |
| U.S. REDUCTION CO | TOLEDO | OH |
| U.S. RUBBER | PAINESVILLE | OH |
| U.S. SHOE CORPORATION | CINCINNATI | OH |
| U.S. Steel | Youngstown | OH |
| U.S. STEEL | CANTON | OH |
| U.S. STEEL | LORAIN | OH |
| U.S. STEEL – LORAIN WORKS | LORAIN | OH |
| U.S. STEEL – OHIO WORKS – STEEL MILL | YOUNGSTOWN | OH |
| U.S. STEEL CORP | CLEVELAND | OH |
| U.S. STEEL CORP | CINCINNATI | OH |
| U.S. STEEL CORP. | LORAIN | OH |
| U.S. STEEL CORP; LORAIN WORKS | LORAIN | OH |
| U.S. STEEL CORPORATION | CANTON | OH |
| U.S. STEEL CORPORATION | CLEVELAND | OH |
| U.S. STEEL CORPORATION | MCDONALD | OH |
| U.S. STEEL ROLL & MACH. | CANTON | OH |
| U.S. STEEL, LORAIN | CLEVELAND | OH |
| U.S. STEEL, LORAIN | LORAIN | OH |
| U.S. VETERANS ADMINISTRATION HOSPITAL | CHILLICOTHE | OH |
| U.S.S | HAVERHILL | OH |
| U.S.S. CHEMICAL PLANT | HAVERHILL | OH |
| U.S.S. FREDERICK FUNSTON – APA-89 | OH | |
| U-BRAND CORP. | ASHLAND | OH |
| UCAN PRODUCTS CO. | DUNCAN | OH |
| UNCLE JOHN’S PLANT FARM | OLMSTED FALLS | OH |
| Union Camp Corp. | Dover | OH |
| Union Carbide | Fostoria | OH |
| Union Carbide | Cleveland | OH |
| Union Carbide | Ashtabula | OH |
| UNION CARBIDE | MARIETTA | OH |
| Union Carbide | Marrietta | OH |
| Union Carbide | Bedford | OH |
| UNION CARBIDE | FREEPORT | OH |
| UNION CARBIDE | FOSTONIA | OH |
| UNION CARBIDE – FOSTORIA PLANT | FOSTORIA | OH |
| Union Carbide & Carbon Chemical Corp. | Marietta | OH |
| UNION CARBIDE & CARBON CO. | MARIETTA | OH |
| UNION CARBIDE & CARBON CO. – PLASTICS DIVISION | MARIETTA | OH |
| UNION CARBIDE & CARBON CORP | MARIETTA | OH |
| UNION CARBIDE & CARBON CORP | RIVERVIEW | OH |
| Union Carbide / Elkem Metals | Marietta | OH |
| UNION CARBIDE AND CARBON CORPORATION, ELECTRO METALLURGICAL DIVISION | MARIETTA | OH |
| Union Carbide Bakelite | Belpre | OH |
| UNION CARBIDE CHEM & PLSTC | RIVERVIEW MARIETTA | OH |
| UNION CARBIDE CHEMICAL | ASHTABULA | OH |
| UNION CARBIDE CO. – ELEC. METALURGICAL DIV. – SIMPLES PLANT | MARIETTA | OH |
| UNION CARBIDE CO. – PLASTICS DIVISION | MARIETTA | OH |
| UNION CARBIDE CO. – SIMPLES PLANT | MARIETTA | OH |
| Union Carbide Consumer Products Co., Div. Union Carbide | Fremont | OH |
| UNION CARBIDE CORP | MARIETTA | OH |
| UNION CARBIDE CORP CARBON | FOSTORIA | OH |
| UNION CARBIDE CORPORATION | FOSTORIA | OH |
| UNION CARBIDE CORPORATION | MARIETTA | OH |
| UNION CARBIDE CORPORATION | ASHTABULA | OH |
| UNION CARBIDE CORPORATION | CLEVELAND | OH |
| UNION CARBIDE CORPORATION – BOX 191 | FOSTORIA | OH |
| UNION CARBIDE CORPORATION – BUILDING 44 | FOSTORIA | OH |
| UNION CARBIDE CORPORATION – CONSUMER PRODUCTS – 1501 WEST STATE STREET | FREMONT | OH |
| UNION CARBIDE CORPORATION, BOX 191 | FOSTORIA | OH |
| UNION CARBIDE CORPORATION, BUILDING 44 | FOSTORIA | OH |
| UNION CARBIDE CORPORATION, CARBIDE PRODUCTS DIVISION | FOSTORIA | OH |
| UNION CARBIDE CORPORATION, CONSUMER PRODUCTS, 1501 WEST STATE ST. | FREMONT | OH |
| UNION CARBIDE ELECTRO METALLURGICAL | ASHTABULA | OH |
| UNION CARBIDE METALS CO | MARIETTA | OH |
| UNION CARBIDE METALS COMPANY | ASHTABULA | OH |
| UNION CARBIDE PLANT | CLEVELAND | OH |
| UNION CARBIDE PLANT | MARIETTA | OH |
| UNION CARBIDE PLASTIC | MARIETTA | OH |
| UNION CENTRAL LIFE INSURANCE COMPANY | CINCINNATI | OH |
| UNION DISTILLING COMPANY | CARTHAGE | OH |
| UNION GAS AND ELECTRIC COMPANY – WEST END STATION | CINCINNATI | OH |
| UNION HEAT, LIGHT AND POWER COMPANY | CINCINNATI | OH |
| UNION IRON AND STEEL COMPANY | YOUNGSTOWN | OH |
| UNION IRON AND STEEL COMPANY | IRONTON | OH |
| UNION METAL | CANTON | OH |
| Union Paper & Twine | Cleveland | OH |
| UNION ROLLING MILL COMPANY | CLEVELAND | OH |
| UNION ROLLING MILL COMPANY | NEWBURG | OH |
| UNION ROLLING MILL COMPANY | NEWBURGH | OH |
| UNION SALT COMPANY | CLEVELAND | OH |
| UNION STOCK YARDS | CLEVELAND | OH |
| UNION TERMINAL BUILDING | CLEVELAND | OH |
| UNION TRUST BUILDING | CINCINNATI | OH |
| UNION WAX PAPER AND PARCHMENT COMPANY | HAMILTON | OH |
| UNION WAX PAPER AND PARCHMENT COMPANY | FRANKLIN | OH |
| UNIROYAL CHEMICAL PLANT | PAINESVILLE | OH |
| UNIROYAL INCORPORATED | PAINESVILLE | OH |
| UNIROYAL RUBBER PLANT | PAINESVILLE | OH |
| UNIROYAL, INCORPORATED | PAINESVILLE | OH |
| UNITCAST | TOLEDO | OH |
| Unitcast Corporation | Toledo | OH |
| Unitcast Division | Toledo | OH |
| UNITED ALLOY STEEL CORPORATION | CANTON | OH |
| UNITED BRETHREN PUBLIC COMPANY | DAYTON | OH |
| UNITED CARBIDE CHEM & PLASTIC – RIVERVIEW | MARIETTA | OH |
| UNITED CONSTRUCTORS, INC. | TORONTO | OH |
| UNITED DAIRY COMPANY | BARNESVILLE | OH |
| United Engineering | Youngstown | OH |
| UNITED ENGINEERING | CANTON | OH |
| UNITED ENGINEERING & FOUNDRY CO | CANTON | OH |
| United Engineering & Foundry Company | Youngstown | OH |
| UNITED FURNACE COMPANY | CANTON | OH |
| UNITED GREENHOUSE CORPORATION | PALMYRA | OH |
| UNITED POWER COMPANY | EAST LIVERPOOL | OH |
| UNITED SALT COMPANY | CLEVELAND | OH |
| UNITED SHEET METAL CO | COLUMBUS | OH |
| UNITED SHEET METAL COMPANY | COLUMBUS | OH |
| UNITED STATES ALUMINUM COMPANY | CLEVELAND | OH |
| United States Government Atomic Energy Commission – Fernald Feed Materials Production Center | Hamilton | OH |
| UNITED STATES GOVERNMENT NITRATE PLANT #3 | NITRATE | OH |
| UNITED STATES GOVERNMENT NITRATE PLANT #4 | ANCOR | OH |
| UNITED STATES GYPSUM COMPANY | CYPSUM | OH |
| UNITED STATES GYPSUM COMPANY | GYPSUM | OH |
| UNITED STATES GYPSUM COMPANY | GENOA | OH |
| UNITED STATES LITHOGRAPH COMPANY | EAST NORWOOD | OH |
| UNITED STATES PLAYING CARDS | CINCINNATI | OH |
| UNITED STATES PLAYING CARDS | NORWOOD | OH |
| UNITED STATES PLAYING CARDS COMPANY | EAST NORWOOD | OH |
| UNITED STATES POST OFFICE JOB | CANTON | OH |
| UNITED STATES PRINTING COMPANY | CINCINNATI | OH |
| UNITED STATES RUBBER COMPANY, NAUGATUCK CHEMICAL DIVISION | PAINESVILLE | OH |
| UNITED STATES STEEL CORP. OHIO WORKS | YOUNGSTOWN | OH |
| United States Steel Corporation | Lorain | OH |
| United States Steel Corporation | Youngstown | OH |
| UNITED STATES VETERANS ADMINISTRATION | CHILLICOTHE | OH |
| UNITED STATES WAR DEPARTMENT, PATTERSON FIELD | FAIRFIELD | OH |
| UNITED STEEL COMPANY | CANTON | OH |
| UNIVERSAL ATLAS CEMENT | FAIRBORN | OH |
| Universal Atlas Cement Co. | Fairborn | OH |
| UNIVERSAL MANUFACTURING COMPANY – ANTHONY WAYNE PARKWAY | CAMDEN | OH |
| UNIVERSAL POTTERIES INC | CAMBRIDGE | OH |
| Universal Pottery | Cambridge | OH |
| UNIVERSAL SEWER PIPE CORPORATION | PALMYRA | OH |
| UNIVERSAL SEWER PIPE CORPORATION | UHRICHSVILLE | OH |
| UNIVERSITY HOSPITAL – WEARN BLDG 6TH FLOOR | CLEVELAND | OH |
| UNIVERSITY HOSPITAL, GENERAL SERVICE BUILDING | CLEVELAND | OH |
| UNIVERSITY OF CINCINNATI – BUILDINGS 73 & 74 | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – BUILDINGS 74 & 75 | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – CALHOUN RESIDENCE HALL | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – MEDICAL SCIENCE BUILDING | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – PHYSICAL PLANT | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – SANDERS TUNNEL | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – STUDENT UNION | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – W M COOPER PROCTOR HALL | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI – WESTERN UTILITIES | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI, SCIENCE COMPLEX | CINCINNATI | OH |
| UNIVERSITY OF CINCINNATI, STUDENT UNION BUILDING | CINCINNATI | OH |
| University Of Dayton | Dayton | OH |
| UNIVERSITY OF DAYTON – ROESCH LIBRARY | DAYTON | OH |
| UNIVERSITY OF DAYTON, SCHOOL OF BUSINESS | DAYTON | OH |
| University of Toledo, Adminstration Building | Toledo | OH |
| University of Toledo, Recreation Hall | Toledo | OH |
| Unsulco Inc | Lima | OH |
| UPPER UNION MILLS | YOUNGSTOWN | OH |
| UPSON NUT COMPANY | CLEVELAND | OH |
| UPSON WALTON | CLEVELAND | OH |
| UP-TO-DATE LAUNDRY COMPANY | CLEVELAND | OH |
| URAN STORAGE | SOUTH POINT | OH |
| URBANA LIGHT COMPANY – ARTIFICIAL GAS PLANT | URBANA | OH |
| URSILINE ACADEMY | BLUE ASH | OH |
| URSULINE COLLEGE | TIFFIN | OH |
| US AIR FORCE HEAVY PRESS FACILITIES | CLEVELAND | OH |
| US ALUM. CORP. | MANSFIELD | OH |
| US CAST IRON PIPE AND LAUNDRY COMPANY | ADDYSTON | OH |
| Us Gypsum | Gypsum | OH |
| US Gypsum | Warren | OH |
| US INDUSTRIAL CHEM CORP METAL REDUCTION PLANT | ASHTABULA | OH |
| US Post Office | Cleveland | OH |
| US POST OFFICE – 4735 MASSILLON RD | GREEN | OH |
| US REDUCTION | TOLEDO | OH |
| US SHOE | CINCINNATI | OH |
| US Steel | Mcdonald | OH |
| Us Steel | Avon Lake | OH |
| US STEEL | Canton | OH |
| US Steel | Cleveland | OH |
| US STEEL | Cuyahoga | OH |
| US Steel | Youngstown | OH |
| US Steel | Lorain | OH |
| US Steel | Fairborn | OH |
| US Steel | Masury | OH |
| US STEEL – LORAIN | CLEVELAND | OH |
| US STEEL CORP | LORAIN | OH |
| US STEEL CORP | MCDONALD | OH |
| US STEEL CORP | YOUNGSTOWN | OH |
| US STEEL OHIO WORKS | YOUNGSTOWN | OH |
| Uss Agri Chemicals Co. | Haverhill | OH |
| Uss Chemical Company | Haverhill | OH |
| USS Chemicals Plant | Haverhill | OH |
| USX STEEL | MCDONALD | OH |
| UTICA CHURCH OF THE NATIVITY | UTICA | OH |
| Utilities Coating Co | Niles | OH |
| VA Hospital | Brecksville | OH |
| VACCUUM DEGASSING | MIDDLETOWN | OH |
| VAL DECKER PACKING COMPANY | PIQUA | OH |
| VALLEY JOB | CANTON | OH |
| Valley Mold | Hubbard | OH |
| VAN CAMP PACKING COMPANY | BRYAN | OH |
| VAN CAMP PACKING COMPANY | WAUSEON | OH |
| VAN SICKLE IND. | AVON | OH |
| VAN WENT PUBLIC SERVICES COMPANY | VAN WERT | OH |
| VANADIUM CORP OF AMERICA | VANCORAM | OH |
| VANADIUM CORPORATION | CAMBRIDGE | OH |
| Vanadium Corporation of America | Steubenville | OH |
| VANDALIA BUTLER BOARD OF EDUCATION | VANDALIA | OH |
| Variety Stamping | Cleveland | OH |
| VARIETY STEEL | CLEVELAND | OH |
| VARIETY STEEL FABRICATORS, INC. | CLEVELAND | OH |
| VARI-SYSTEMS | CLEVELAND | OH |
| VETERAN`S AFFAIRS HOSPITAL | CINCINNATI | OH |
| VETERAN`S AFFAIRS HOSPITAL – 8TH & 11TH FLOOR | CINCINNATI | OH |
| VETERANS ADMINISTRATION HOSPITAL | CLEVELAND | OH |
| VETERANS ADMINISTRATION HOSPITAL | CLEVELAND, WADE PARK | OH |
| VETERANS ADMINISTRATION HOSPITAL | BRECKSVILLE | OH |
| VETERANS ADMINISTRATION HOSPITAL | CHILLICOTHE | OH |
| VETERANS ADMINISTRATION HOSPITAL, WADE PARK | CLEVELAND | OH |
| Veterans Hospital – WPAFB | Dayton | OH |
| VICKERS, INCORPORATED | SOUTH LEBANON | OH |
| VICKSBURG RAILROAD POWER AND MANUFACTURING COMPANY | AKRON | OH |
| VICTOR SAFE AND LOCK COMPANY | NORWOOD | OH |
| VICTOREEN INSTRUMENT | CLEVELAND | OH |
| VICTORY METAL | CLEVELAND | OH |
| Viking Glass | Ironton | OH |
| Village of Minerva – Wastewater Treatment Plant | Minerva | OH |
| VINDICATOR PRINTING COMPANY | YOUNGSTOWN | OH |
| VIRGINIA CAROLINA CHEMICAL | FERNWALD | OH |
| VIRGINIA-CAROLINA CHEMICAL CORP. | FERNALD | OH |
| VISTRON | LIMA | OH |
| Vistron Corp | Lima | OH |
| VISTRON CORP.* | LIMA | OH |
| VISTRON CORPORATION | LIMA | OH |
| VISTRON CORPORATION | CLEVELAND | OH |
| VISTRON CORPORATION SUBSIDIARY OF STANDARD OIL COMPANY | LIMA | OH |
| VISTRON PLANT | LIMA | OH |
| Vistron Plant, Standard Oil | Lima | OH |
| VIXEN TOOL COMPANY | NEW COMERSTOWN | OH |
| VOCATION GUIDANCE | CLEVELAND | OH |
| Volk Supply Co | Cleveland | OH |
| VULCAN BUILDING | CLEVELAND | OH |
| Vulcan Copper & Supply Company | Cincinnati | OH |
| VULCAN MATERIALS COMPANY | SANDUSKY | OH |
| VULCAN TEAM TRACK | TOLEDO | OH |
| W M POWELL COMPANY – 1328 ALABAMA STREET | CINCINNATI | OH |
| W. BINGHAM CO. | CLEVELAND | OH |
| W. H. SAMMIS POWER PLANT | STRATTON | OH |
| W. H. SAMMIS POWER PLANT – UNIT 7 | STRATTON | OH |
| W. M. PATTISON SUPPLY COMPANY | CLEVELAND | OH |
| W.A. KEARNS PACKING COMPANY | MANSFIELD | OH |
| W.B. COWLES | CLEVELAND | OH |
| W.B. OGLESBY PAPER COMPANY | MIDDLETOWN | OH |
| W.B. PALLOCK COMPANY | YOUNGSTOWN | OH |
| W.E. PLECHATY | CLEVELAND | OH |
| W.F. MURDOCK | AKRON | OH |
| W.H. DAVEY | MASSILLON | OH |
| W.H. HANNA AND COMPANY | CLEVELAND | OH |
| W.H. Kiefaber Co. | Dayton | OH |
| W.J. SCHOLL COMPANY | MINERAL RIDGE | OH |
| W.J. THOMAS | SHADYSIDE | OH |
| W.P. Gibson Shop | Warren | OH |
| W.R. GRACE AND COMPANY, DUBOIS CHEMICALS DIVISION | SHARONVILLE | OH |
| W.S. CARROLL, PRES., BOARD OF TRUSTEES | BELLAIRE | OH |
| W.S. LOWE AND COMPANY | LIMA | OH |
| W.S. MERRILL COMPANY | READING | OH |
| W.S. TYLER COMPANY | CLEVELAND | OH |
| W.T. BURDELL TRUSTEE | COLUMBUS | OH |
| Wabash Portland Cement | Osborn | OH |
| WABASH SMELTHING | CLEVELAND | OH |
| WADSWORTH LIGHT AND WATER COMPANY – POWER PLANT | WADSWORTH | OH |
| WADSWORTH SALT COMPANY | WADSWORTH | OH |
| WAGNER AWNING | CLEVELAND | OH |
| WAGNER-SMITH STORE | DAYTON | OH |
| WALDEN BOOK STORE – NORTHGATE MALL | CINCINNATI | OH |
| Waldron Firebrick & Insulation | Cleveland | OH |
| WALGREEN DRUG STORE | CINCINNATI | OH |
| WALKER HEAT | CLEVELAND | OH |
| WALKER PROCESSING | CLEVELAND | OH |
| WALLACE & TIERNAN INC. | CANTON | OH |
| WALNUT | GROVEPORT | OH |
| WALNUT HILLS HIGH SCHOOL | CINCINNATI | OH |
| WALTON HILLS | WALTON HILLS | OH |
| WALTS FURNACE | CINCINNATI | OH |
| WALTZ FURNACE CO | CINCINNATI | OH |
| WAR DEPARTMENT SERVICE COMMAND | PATTERSON FIELD | OH |
| WARD LOW THOMAS PAPER COMPANY | MIDDLETOWN | OH |
| WARDER, BUSHNELL AND GLESSNER COMPANY | SPRINGFIELD | OH |
| WARDLOW THOMAS AND COMPANY | MIDDLETOWN | OH |
| WARDLOW-THOMAS PAPER COMPANY | MIDDLETOWN | OH |
| WARNER & SWASEY COMPANY | CLEVELAND | OH |
| WARNER & SWASEY COMPANY – BOILER HOUSE | CLEVELAND | OH |
| WARNER AND SWASEY COMPANY | CLEVELAND | OH |
| WARNER COLLIERIES CO | WOLF RUN | OH |
| WARNICK AND JUSTUS | MASSILLON | OH |
| WARREN CITY HALL | WARREN | OH |
| WARREN CITY TANK AND BOILER COMPANY | WARREN | OH |
| WARREN CONSOLIDATED | WARREN | OH |
| WARREN DOCK | WARREN | OH |
| WARREN ELECTRIC MANUFACTURING COMPANY – MANUFACTURING PLANT | SANDUSKY | OH |
| WARREN MUNICIPAL BUILDING | WARREN | OH |
| Warren Pump & Supply | Warren | OH |
| WARREN STEEL | WARREN | OH |
| WARREN TOOL CORP | WARREN | OH |
| WARREN TOOL CORP.* | WARREN | OH |
| WARREN WATER AND LIGHT COMPANY – FACTORY | WARREN | OH |
| WARREN WORKS | WARREN | OH |
| WASHINGTON GAS AND ELECTRIC COMPANY – POWER PLANT | WASHINGTON COURT HOUSE | OH |
| WASHINGTON HIGH SCHOOL | CANTON | OH |
| WASHINGTON HIGH SCHOOL – BOILER ROOM | CANTON | OH |
| Washington School | Springfield | OH |
| WATER TREATMENT PLANT | CAMBRIDGE | OH |
| WATIONALWORKS | CLEVELAND | OH |
| WATT MINING CAR WHEEL COMPANY | BARNESVILLE | OH |
| WATTEREDGE | AVON LAKE | OH |
| WATTEREDGE-UNIFLEX | AVON LAKE | OH |
| WAUSAW MOSINEE | MIDDLETOWN | OH |
| WAUSEON WATER PLANT | WAUSEON | OH |
| WAYNE COAL COMPANY | STEUBENVILLE | OH |
| WAYNE COUNTY JOINT VOC SCH | SMITHVILLE | OH |
| Wayne Dalton Corporation | Columbus | OH |
| WAYNE MINING COMPANY | CAMBRIDGE | OH |
| WAYNESVILLE FARMER EXCHANGE CO | WAYENSVILLE | OH |
| WCET-TV | CINCINNATI | OH |
| WCI STEEL | WARREN | OH |
| WEAN UNITED | CANTON | OH |
| WEAN UNITED | YOUNGSTOWN | OH |
| Wean United Foundry | Youngstown | OH |
| Wean United Foundry | Canton | OH |
| WEARN BLDG UNIV HOSP | CLEVELAND | OH |
| WEBB CORPORATION | EAST LIVERPOOL | OH |
| WEBB FABRICATORS | CLEVELAND | OH |
| WEBCO | CLEVELAND | OH |
| WEBSTER MFG CO | TIFFIN | OH |
| WEHNER BREWING COMPANY | DAYTON | OH |
| WEHRLE COMPANY | NEWARK | OH |
| WEHRLE COMPANY – STOVE MANUFACTURING PLANT | NEWARK | OH |
| WEIDMAN COMPANY | CLEVELAND | OH |
| WEIR FROG COMPANY | CINCINNATI | OH |
| WEIR FROG COMPANY | NORWOOD | OH |
| WEIR KILBY CORPORATION | NORWOOD | OH |
| Weirton Steel | Steubenville | OH |
| Weirton Steel Company Division | Steubenville | OH |
| WEISKOPF DIVISION | CINCINNATI | OH |
| WEISS INDUSTRIES | MANSFIELD | OH |
| WELCO INDUSTRIES | CINCINNATI | OH |
| WELD ROD DEPT | BARBERTON | OH |
| WELDED RING | CLEVELAND | OH |
| WELDINGHOUSE | CLEVELAND | OH |
| WELDON RUBBER | WARREN | OH |
| WELLMAN COMPANY | CLEVELAND | OH |
| Wellman Engineering Company | Cleveland | OH |
| WELLMAN LEAVER ENGINEERING COMPANY | CLEVELAND | OH |
| WELLMAN POWER AND GAS – GREEN SPRINGS REFORMATION PLANT | GREEN SPRINGS | OH |
| WELLMAN-MCDOWELL | CLEVELAND | OH |
| WELLMAN-SEAVER ENGINEERING COMPANY | CLEVELAND | OH |
| WELLMAN-SEAVER-MORGAN COMPANY | SOUTH AKRON | OH |
| WELLMAN-SEAVER-MORGAN COMPANY | AKRON | OH |
| WELLMAN-SEAVER-MORGAN COMPANY | CLEVELAND | OH |
| WELLSTON FURNACE COMPANY | WELLSTON | OH |
| WELLSTON IRON FURNACE COMPANY | WELLSTON | OH |
| WELLSTON MUNICIPAL ELECTRIC PLANT | WELLSTON | OH |
| WELLSTON STEEL AND IRON COMPANY | WELLSTON | OH |
| WELLSVILLE FDRY | WELLSVILLE | OH |
| WELLSVILLE PLATE AND SHEET IRON COMPANY | WELLSVILLE | OH |
| WELTON RUBBER | WARREN | OH |
| WERNER COMPANY | AKRON | OH |
| WERNER G. SMITH | CLEVELAND | OH |
| WEST 40TH STREET SCHOOL | LORAIN | OH |
| WEST CARROLTON PARCHMENT COMPANY | WEST CARROLLTON | OH |
| WEST CLERMONT CO CONSOL. SCHOOL – CLOUGH PIKE | AMELIA | OH |
| West End Lumber | Portsmouth | OH |
| West Hills High School – Boiler Rm Ceiling | Cincinnati | OH |
| West Lorain Plant | Lorain | OH |
| WEST NINTH ST. TERMINAL WAREHOUSE | CLEVELAND | OH |
| WEST RIVER AUTO | ELYRIA | OH |
| WESTCOTT MOTOR CAR COMPANY | SPRINGFIELD | OH |
| WESTERN AND SOUTHERN LIFE INSURANCE COMPANY | CINCINNATI | OH |
| WESTERN BOWL | CINCINNATI | OH |
| WESTERN CONDUCT MANUFACTURING | YOUNGSTOWN | OH |
| WESTERN CONTROLS | WILLOUGHBY | OH |
| Western Electric | Columbus | OH |
| WESTERN ELECTRIC – COLUMBUS WORKS | Columbus | OH |
| WESTERN ELECTRIC CO. | SOLON | OH |
| WESTERN ELECTRIC CO. – Distribution Center | SOLON | OH |
| Western Electric Company, Inc. | Columbus | OH |
| WESTERN ENTERPRISE | AVON LAKE | OH |
| WESTERN HILLS HIGH SCHOOL | CINCINNATI | OH |
| WESTERN HILLS MART | CINCINNATI | OH |
| WESTERN HILLS PUMPING STATION | CINCINNATI | OH |
| WESTERN MINERAL WOOL COMPANY | CLEVELAND | OH |
| WESTERN OHIO RAILROAD COMPANY | ST. MARYS | OH |
| WESTERN OHIO RAILWAY COMPANY | ST. MARYS | OH |
| WESTERN OHIO RAILWAY COMPANY | AKRON | OH |
| WESTERN RESERVE CARE CENTER | YOUNGSTOWN | OH |
| WESTERN RESERVE CARE SYSTEM – SOUTH UNIT | YOUNGSTOWN | OH |
| WESTERN RESERVE NATIONAL BANK | CLEVELAND | OH |
| WESTERN RESERVE PSY. CENT | SAGAMORE HILLS | OH |
| WESTERN RESERVE TUNNEL | CLEVELAND | OH |
| WESTERN RESERVE UNIVERSITY RESEARCH BUILDING | CLEVELAND | OH |
| WESTERVILLE CREAMERY CO | COVINGTON | OH |
| WESTERVILLE CREAMERY COMPANY | WESTERVILLE | OH |
| WESTGATE MALL | CLEVELAND | OH |
| WESTGATE SHOPPING CENTER | CLEVELAND | OH |
| WESTINGHOUSE | CANTON | OH |
| Westinghouse | Cleveland | OH |
| Westinghouse | Mansfield | OH |
| WESTINGHOUSE BENDIX | ELYRIA | OH |
| Westinghouse Corporation | Mansfield | OH |
| WESTINGHOUSE ELEC CORP | COLUMBUS | OH |
| Westinghouse Elec. Corp. ? Waverly Ave | Cleveland | OH |
| WESTINGHOUSE ELECTRIC | UPPER SANDUSKY | OH |
| WESTINGHOUSE ELECTRIC & MANUFACTURING | CLEVELAND | OH |
| Westinghouse Electric & Manufacturing Co. | Mansfield | OH |
| Westinghouse Electric & Manufacturing Co. – Mansfield Works | Mansfield | OH |
| WESTINGHOUSE ELECTRIC AND MANUFACTURING CO – MANSFIELD PLANT | MANSFIELD | OH |
| WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY – APPLIANCE DIVISION PLANT | MANSFIELD | OH |
| WESTINGHOUSE ELECTRIC CORP – Columbus Industrial PLant | COLUMBUS | OH |
| WESTINGHOUSE ELECTRIC CORP. – MANUFACTURING PLANT | MANSFIELD | OH |
| WESTINGHOUSE ELECTRIC CORP. – MANUFACTURING PLANT | COLUMBUS | OH |
| WESTINGHOUSE ELECTRIC CORPORATION – MANSFIELD PLANT | MANSFIELD | OH |
| WESTLAKE HIGH SCHOOL | WESTLAKE | OH |
| Westlake Jr. High School | Westlake | OH |
| WHEELING – PITTS. | STEUBENVILLE | OH |
| WHEELING AND LAKE ERIE COAL COMPANY | ELYRIA | OH |
| WHEELING AND LAKE ERIE RAILROAD COMPANY | HURON | OH |
| WHEELING AND LAKE ERIE RAILWAY COMPANY | BREWSTER | OH |
| Wheeling Brake Block Mfg., Co. | Bridgeport | OH |
| WHEELING CORRUGATING CORPORATION | MARTINS FERRY | OH |
| WHEELING CORRUGATING WORKS | MARTINS FERRY | OH |
| WHEELING HOSPITAL JOB | CANTON | OH |
| WHEELING LAKE ERIE RAILROAD COMPANY | CLEVELAND | OH |
| WHEELING LAKE ERIE RAILROAD COMPANY | BREWSTER | OH |
| Wheeling Pitt | STEUBENVILLE | OH |
| Wheeling Pitt Steel | MARTINS FERRY | OH |
| WHEELING PITT STEEL | MINGO JUNCTION | OH |
| WHEELING PITT STEEL | STEUBENVILLE | OH |
| Wheeling Pittsburgh Steel | Yorkville | OH |
| Wheeling Pittsburgh Steel | Steubenvl/Mingo | OH |
| Wheeling Pittsburgh Steel | Steubenville | OH |
| WHEELING PITTSBURGH STEEL | MINGO JUNCTION | OH |
| Wheeling Pittsburgh Steel – North Plant | Steubenville | OH |
| Wheeling Pittsburgh Steel – South Plant | Mingo Junction | OH |
| WHEELING PITTSBURGH STEEL – STEUBENVILLE PLANT – NORTH DIVISION | STEUBENVILLE | OH |
| WHEELING PITTSBURGH STEEL – STEUBENVILLE PLANT – NORTH DIVISION – CENTRAL STORES | STEUBENVILLE | OH |
| WHEELING PITTSBURGH STEEL – STEUBENVILLE PLANT – SOUTH DIVISION – PIPE SHOP | MINGO JUNCTION | OH |
| WHEELING PITTSBURGH STEEL CORP | STEUBENVILLE | OH |
| WHEELING PITTSBURGH STEEL CORP., STEUBENVILLE PLANT SOUTH DIV., YARD & MASONRY DEPT. (D.J. ELLIS) | MINGO JUNCTION | OH |
| WHEELING PITTSBURGH STEEL, SOUTH PLANT | MINGO JUNCTION | OH |
| WHEELING STEEL | YORKVILLE | OH |
| WHEELING STEEL | NEW BOSTON | OH |
| WHEELING STEEL | MARTINS FERRY | OH |
| Wheeling Steel | Steubenville | OH |
| WHEELING STEEL CORP | MARTINS FERRY | OH |
| WHEELING STEEL CORP | MINGO JUNCTION | OH |
| WHEELING STEEL CORP | YORKVILLE | OH |
| WHEELING STEEL CORP – MARTINS FERRY FACTORY | MARTINS FERRY | OH |
| WHEELING STEEL CORP – MARTINS FERRY FACTORY – PLANT #2 | MARTINS FERRY | OH |
| WHEELING STEEL CORP – MARTINS FERRY PLANT | MARTINS FERRY | OH |
| WHEELING STEEL CORP – MARTINS FERRY PLANT – CENTRAL ENG | MARTINS FERRY | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS | STEUBENVILLE | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – NORTH DIVISION | STEUBENVILLE | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – NORTH DIVISION – CENTRAL ENG PIPE SHOP | STEUBENVILLE | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – NORTH DIVISION – ENGINEERING DEPARTMENT PIPE SHOP | STEUBENVILLE | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – NORTH DIVISION – MECH DEPT., PIPE SHOP | STEUBENVILLE | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – SOUTH DIVISION | MINGO JUNCTION | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – SOUTH DIVISION – CENTRAL ENGINEERING | MINGO JUNCTION | OH |
| WHEELING STEEL CORP – STEUBENVILLE WORKS – SOUTH DIVISION – ENGINEERING DEPT MATERIAL STORAGE | MINGO JUNCTION | OH |
| Wheeling Steel Corporation | Mingo Junction | OH |
| Wheeling Steel Corporation | Steubenville | OH |
| WHEELING STEEL CORPORATION | PORTSMOUTH | OH |
| WHEELING TOWNSHIP COAL MINING COMPANY | ADENA | OH |
| Wheeling-Pittsburgh Steel | Yorkville | OH |
| Wheeling-Pittsburgh Steel | Steubenville | OH |
| Wheeling-Pittsburgh Steel | Martins Ferry | OH |
| Wheeling-Pittsburgh Steel | Mingo Junction | OH |
| WHEELING-PITTSBURGH STEEL – NORTH PLANT | STEUBENVILLE | OH |
| WHEELING-PITTSBURGH STEEL CORPORATION | WINTERSVILLE | OH |
| WHEELING-PITTSBURGH STEEL CORPORATION | PORTSMOUTH | OH |
| WHEELING-PITTSBURGH STEEL CORPORATION | MARTINS FERRY | OH |
| WHEELING-PITTSBURGH STEEL CORPORATION | MANESSEN | OH |
| WHEELING-PITTSBURGH STEEL CORPORATION | FALLENSBEE | OH |
| WHIRLPOOL CORP | FINDLAY | OH |
| WHIRLPOOL CORPORATION | CLYDE | OH |
| WHIRLPOOL-SEEGER CORPORATION | CLYDE | OH |
| WHITAKER-GLESSNER COMPANY | PORTSMOUTH | OH |
| WHITAKER-GLESSNER COMPANY | MARTINS FERRY | OH |
| WHITE COMPANY | CLEVELAND | OH |
| WHITE CROSS HOSPITAL | COLUMBUS | OH |
| WHITE CROSS HOSPITAL – OLENTANGY RR AND WN BROADWAY | COLUMBUS | OH |
| White Motor | Cleveland | OH |
| WHITE MOTOR CAR COMPANY | CLEVELAND | OH |
| WHITE MOTOR CO – DEPT #132 | CLEVELAND | OH |
| WHITE MOTOR COMPANY | CLEVELAND | OH |
| White Motors/Euclid, Inc. | Cleveland | OH |
| WHITE SEWING MACHINE COMPANY | CLEVELAND | OH |
| WHITE SUPERIOR DIVISION WHITE MOTOR COMPANY | SPRINGFIELD | OH |
| WHITELEY, FASSLER AND KELLY COMPANY | SPRINGFIELD | OH |
| Whiting Corporation | Lima | OH |
| WHITMAN AND BARNES MANUFACTURING COMPANY | AKRON | OH |
| WHITMAN AND BARNES MANUFACTURING COMPANY | CANTON | OH |
| WHITMORE ROBINSON AND COMPANY | AKRON | OH |
| WHITTIER JR. HIGH SCHOOL ADDN | LORAIN | OH |
| WHITTIER JR. HS | LORAIN | OH |
| WHITTIER JUNIOR HIGH SCHOOL | LORAIN | OH |
| WHK Broadcasting Studio | Cleveland | OH |
| WICKES BOILER | NORTH CANTON | OH |
| WICKLIFFE | EASTLAKE | OH |
| WIDLAR COMPANY | CLEVELAND | OH |
| WIDOWS & ORPHANS HOME – 1310 EAST MCMILLAN | CINCINNATI | OH |
| WIELYS OVERLAND COMPANY | TOLEDO | OH |
| WILBERFORCE UNIVERSITY, THE COMBINED NORMAL AND INDUSTRIAL DEPARTMENT | WILBERFORCE, GREEN COUNTY | OH |
| WILDCRAFT PRODUCTS | DAYTON | OH |
| WILFRED SYKES | LORAIN | OH |
| WILKINS AIR FORCE BASE | SHELBY | OH |
| WILKOFF S & SONS CO | CLEVELAND | OH |
| WILLARD STORAGE BATTERY COMPANY | CLEVELAND | OH |
| WILLARD STORAGE BATTERY DIVISION OF ELECTRIC STORAGE BATTERY COMPANY – MANUFACTURING PLANT | CLEVELAND | OH |
| WILLIAM FOCKE’S SONS COMPANY | DAYTON | OH |
| William G. Solt Co. | Cincinnati | OH |
| WILLIAM H. CONKLIN COMPANY | COLUMBUS | OH |
| WILLIAM H. ZIMMER POWER STATION | MOSCOW | OH |
| WILLIAM HAMILTON SONS CAR COMPANY | NEWARK | OH |
| WILLIAM LAY COMPANY, 2501 LAY DRIVE | AKRON | OH |
| WILLIAM MANFACTURING COMPANY | PORTSMOUTH | OH |
| William Pollack Company | Youngstown | OH |
| WILLIAM POWELL | CINCINNATI | OH |
| WILLIAM REISS STEAMSHIP | CLEVELAND | OH |
| WILLIAM S. MERRELL COMPANY | READING | OH |
| WILLIAM S. MERRELL COMPANY DIVISION OF RICHARDSON MERRELL COMPANY | READING | OH |
| WILLIAMS BROTHERS COMPANY | KENT | OH |
| WILLIAMS MANUFACTURING COMPANY | PORTSMOUTH | OH |
| Williamson Company | Cinncinnati | OH |
| WILLIS MUSIC – 7TH & RACE | CINCINNATI | OH |
| WILLOUGHBY HIGH SCHOOL | WILLOUGHBY | OH |
| WILLOUGHBY WORKS | WILLOUGHBY | OH |
| WILLSON DAIRY | CINCINNATI | OH |
| WILLYS MOTORS, INCORPORATED | TOLEDO | OH |
| Willys Overland Company, Reroofing Plant | OH | |
| WILLYS-OVERLAND COMPANY | ELYRIA | OH |
| WILLYS-OVERLAND COMPANY | TOLEDO | OH |
| WILMINGTON HIGH SCHOOL | WILMINGTON | OH |
| WILSON AND MCCALLAY | MIDDLETOWN | OH |
| WILSON AND MCGALLAY TOBACCO COMPANY | MIDDLETOWN | OH |
| Wilson Furnance Service | Washington Courthouse | OH |
| WILSON RUBBER COMPANY | CANTON | OH |
| WILTSIE REALTY COMPANY | TOLEDO | OH |
| WINNEN INCINERATOR | BEDFORD | OH |
| WINNEN INCINERATOR CO. | BEDFORD | OH |
| WINTON FOREST SCHOOL | CINCINNATI | OH |
| WINTON HEAT | ROCKY RIVER | OH |
| WINTON HEAT | CLEVELAND | OH |
| WINTON HILL TECHNICAL CENTER – BUILDING 83 – BUYING DEPARTMENT – PO BOX 599 | CINCINNATI | OH |
| WINTON MOTOR CARRIAGE COMPANY | CLEVELAND | OH |
| Winton Place School | Cincinnati | OH |
| Witco Chemical | Cleveland | OH |
| WITHROW HIGH SCHOOL – MADISON ROAD | CINCINNATI | OH |
| Withrow School | Cincinnati | OH |
| WITT CO | CINCINNATI | OH |
| WM PATTISON SUPPLY COMPANY | CLEVELAND | OH |
| Woloham Lumber Co | Kettering | OH |
| WOOD SHOVEL AND TOOL COMPANY | PIQUA | OH |
| WOODLAWN GARAGE | WOODLAWN | OH |
| WOODRUFF AND PAUSCH STONE COMPANY | COLUMBUS | OH |
| WOOD-SPENCER CO. | CLEVELAND | OH |
| WOODSTER PRODUCTS INC | WOODSTER | OH |
| WOOLCO STORE | TOLEDO | OH |
| WOOLSON SPICE COMPANY | TOLEDO | OH |
| WOOLWORTH STORE | BEECHMONT | OH |
| WOOSTER COLLEGE – SPEECH BUILDING | CANTON | OH |
| WOOSTER COLLEGE INN | WOOSTER | OH |
| WOOSTER MUNICIPAL BLDG | WOOSTER | OH |
| WOOSTER MUNICIPAL BLDG | CANTON | OH |
| WORLD PUBLISHING COMPANY | CLEVELAND | OH |
| WORLEY BROTHERS | BAINBRIDGE | OH |
| WORTHINGTON HIGH SCHOOL | WORTHINGTON | OH |
| WORTHINGTON METHODIST CHURCH | WORTHINGTON | OH |
| WORTHINGTON PUMP AND MACHINERY CORPORATION | ELMWOOD PLACE | OH |
| WRENN PAPER COMPANY | MIDDLETOWN | OH |
| WRIGHT AERONAUTICAL CORPORATION | LOCKLAND | OH |
| WRIGHT BROTHERS | TOLEDO | OH |
| WRIGHT BROTHERS GREENHOUSE COMPANY | TOLEDO | OH |
| WRIGHT CONSTRUCTION | DAYTON | OH |
| WRIGHT FIELD | DAYTON | OH |
| Wright Patterson Air Force Base | Dayton | OH |
| WRIGHT PATTERSON AIR FORCE BASE (AFB) | DAYTON | OH |
| WRIGHT PATTERSON FIELD | DAYTON | OH |
| WRIGHT STATE CAMPUS, SCIENCE BUILDING | DAYTON | OH |
| WRIGHT WRENCH AND FORGING COMPANY | CANTON | OH |
| WRIGHT WRENCH MANUFACTURING COMPANY | CANTON | OH |
| WRIGHT-PATTERSON AIR FORCE BASE | WRIGHT | OH |
| Wright-Patterson Air Force Base | Fairborn | OH |
| WRIGHT-PATTERSON AIR FORCE BASE | Greene County | OH |
| WRIGHT-PATTERSON AIRFORCE BASE | DAYTON | OH |
| WRIGHT-PATTERSON AIRFORCE BASE, AREA B | FAIRBORN | OH |
| Wright-Patterson Field | Dayton | OH |
| Wrights Aeronautical | Evendale | OH |
| Wrights Cash And Carry Lumber Co | East Liverpool | OH |
| WSPD Radio Broadcasting Studios | Toledo | OH |
| WTE CORPORATION | AKRON | OH |
| WUNDERLICH FABRICATING | BEDFORD | OH |
| WUNDERLICH FABRICATING CO. | BEDFORD | OH |
| WYNN OIL COMPANY – 5900 CREED ROAD | CINCINNATI | OH |
| WYOMING LIGHT, WATER, HEAT & POWER COMPANY – ELECTRIC LIGHT PLANT | WYOMING | OH |
| XCLEVE. MUSEUM, NAT | CLEVELAND | OH |
| XENIA HIGH SCHOOL | XENIA | OH |
| Y & S TOOL | DAYTON | OH |
| Y.M.C.A. | CANTON | OH |
| YMCA | CLEVELAND | OH |
| YMCA | LANCASTER | OH |
| YMCA BUILDING | DAYTON | OH |
| YMCA HOTEL | DAYTON | OH |
| YODER BROTHERS, INCORPORATED | BARBERTON | OH |
| YODER COMPANY | CLEVELAND | OH |
| YORDER BROTHERS | BARBERTON | OH |
| York Corporation | Naca-Cleveland | OH |
| YOST AND PACKARD | COLUMBUS | OH |
| YOST CONSTRUCTION CO. | YOUNGSTOWN | OH |
| YOUNGSTOWN AIRPORT | YOUNGSTOWN | OH |
| YOUNGSTOWN AND OHIO RAILROAD COMPANY | LISBON | OH |
| YOUNGSTOWN CITY WATER WORKS – PUMPING STATION | YOUNGSTOWN | OH |
| Youngstown Club | Youngstown | OH |
| YOUNGSTOWN COKE COMPANY, LIMITED | LOWELLVILLE | OH |
| YOUNGSTOWN CONCRETE SAND AND STONE COMPANY | YOUNGSTOWN | OH |
| Youngstown Foundry & Machine Company | Youngstown | OH |
| YOUNGSTOWN HEATING COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN HOSPITAL ASSN | YOUNGSTOWN | OH |
| YOUNGSTOWN HOSPITAL ASSOCIATION NORTH SIDE HOSPITAL | YOUNGSTOWN | OH |
| YOUNGSTOWN IRON AND STEEL COMPANY | LOWELLVILLE | OH |
| YOUNGSTOWN IRON AND STEEL ROOFING COMPANY | YOUNGSTOWN | OH |
| Youngstown Iron Sheet & Tube | Youngstown | OH |
| YOUNGSTOWN IRON SHEET AND TUBE COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN IRON SHEET TUBE COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN MANUFACTURING COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN MANUFACTURING COMPANY | STRUTHERS | OH |
| YOUNGSTOWN MAZDA LAMP WORKS | YOUNGSTOWN | OH |
| YOUNGSTOWN MUNICIPAL COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN MUNICIPAL RAILWAY COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN OHIO RAILROAD COMPANY | LEETONIA | OH |
| YOUNGSTOWN PRESSED STEEL COMPANY | WARREN | OH |
| YOUNGSTOWN PRESSED STEEL DIVISION | WARREN | OH |
| YOUNGSTOWN SHEET | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE | BRIER HILL | OH |
| YOUNGSTOWN SHEET & TUBE | GIRARD | OH |
| YOUNGSTOWN SHEET & TUBE | CAMPBELL | OH |
| YOUNGSTOWN SHEET & TUBE | BOARDMAN | OH |
| Youngstown Sheet & Tube | Struthers | OH |
| Youngstown Sheet & Tube Brier Hill | Youngstown | OH |
| Youngstown Sheet & Tube Campbell | Youngstown | OH |
| YOUNGSTOWN SHEET & TUBE – CAMPBELL WORKS | YOUNGSTOWN | OH |
| Youngstown Sheet & Tube / LTV Steel, Campbell, OH | Youngstown | OH |
| YOUNGSTOWN SHEET & TUBE AND CAMPBELL WORKS | YOUNGSTOWN | OH |
| Youngstown Sheet & Tube Brier Hill – Boiler House | Youngstown | OH |
| Youngstown Sheet & Tube C | Youngstown | OH |
| YOUNGSTOWN SHEET & TUBE CO | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE CO – BRIER HILL WORKS – BLOOMING MILL MILLET YD – #5 BILLET PEELER STEAM PIPE | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE CO – CAMPBELL WORKS | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE CO – CAMPBELL WORKS – STORE ROOM | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE CO – CAMPBELL WORKS – STORE ROOM #1 | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE CO – NEW OFFICE BUILDING | BOARDMAN | OH |
| Youngstown Sheet & Tube Co Briarhill | Youngstown | OH |
| Youngstown Sheet & Tube Co. | Youngstown | OH |
| Youngstown Sheet & Tube Co./J&L/LTV | Youngstown | OH |
| YOUNGSTOWN SHEET & TUBE COMPANY | HUBBARD | OH |
| YOUNGSTOWN SHEET & TUBE COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE PLANT | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET & TUBE, BRIER HILL WORKS | YOUNGSTOWN | OH |
| Youngstown Sheet & Tube/Jones & Laughlin Steel Co. | Youngstown | OH |
| YOUNGSTOWN SHEET AND TUBE COMPANY | CAMPBELL | OH |
| YOUNGSTOWN SHEET AND TUBE COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN SHEET AND TUBE COMPANY | STRUTHERS | OH |
| YOUNGSTOWN SHEET TUBE CO | YOUNGSTOWN | OH |
| YOUNGSTOWN STEEL & TUBE AND CAMPBELL WORKS | YOUNGSTOWN | OH |
| YOUNGSTOWN STEEL COMPANY | YOUNGSTOWN | OH |
| YOUNGSTOWN STEEL DOOR | YOUNGSTOWN | OH |
| Youngstown Steel Tank Company | Youngstown | OH |
| YOUNGSTOWN WATER WORKS | YOUNGSTOWN | OH |
| Youngstown Welding & Engineering | Youngstown | OH |
| YOUNSTOWN SHEET AND TUBE COMPANY | STRUTHERS | OH |
| YOUNTSTOWN HEATING COMPANY | YOUNGSTOWN | OH |
| Z & L Lumber Co | Columbus | OH |
| ZANESVILLE RAILWAY LIGHT AND POWER COMPANY – POWER PLANT | ZANESVILLE | OH |
| ZELLER CORP | DEFIANCE | OH |
| Zeller Corporation | Defiance | OH |
| ZETTER CORP | DEFIANCE | OH |
| ZIMPRO | VALLEY CITY | OH |
| ZIRCONIUM CORPORATION | SOLON | OH |
| ZUROWSKI GREENHOUSE | CLEVELAND | OH |
Call us today for help! 214-380-2134