Jobsite Name | City | State |
---|---|---|
#1 SHAFT | NANTICOKE | PA |
#2 SHAFT | NANTICOKE | PA |
#4 COLLIERY | JEDDO | PA |
#4 SHAFT | DUNMORE | PA |
#5 BREAKER | DUNMORE | PA |
#5 SHAFT | DUNMORE | PA |
#8 COLLIERY | DUNMORE | PA |
1010 RACE ST. | PHILADELPHIA | PA |
1709 GRAHAM AVE. | WINDBAR | PA |
19TH ALLEGHENY CORPORATION | PHILADELPHIA | PA |
2545 ARAMINGO AVE., BUILDING 30 | PHILADELPHIA | PA |
25TH WARD GAS WORKS | PHILADELPHIA | PA |
25TH WARD GAS WORKS – STATION B | PHILADELPHIA | PA |
2ND AVENUE PASSENGER RAILWAY | PITTSBURGH | PA |
3 Mile Island | Middletown | PA |
30TH & MARKET STREETS | PHILADELPHIA | PA |
3M | Bristol | PA |
46TH & HAVERFORD SCHOOL | PHILADELPHIA | PA |
5TH AND GLENWOOD AVE. | PHILADELPHIA | PA |
6 NORTH PROGRESS AVE. | HARRISBURG | PA |
600 NORTH PROGRESS ST. | HARRISBURG | PA |
6136 GULF | PHILADELPHIA | PA |
69th Street Terminal Restaurant | Philadelphia | PA |
7TH AVE. HOTEL | PITTSBURGH | PA |
A – Tops Corporation | Beaver Falls | PA |
A AND A | PHILADEPHIA | PA |
A Hill Co | Erie | PA |
A M BYERS COMPANY | AMBRIDGE | PA |
A P Green | Tarentum | PA |
A S G INDUSTRIES | JEANETTE | PA |
A STEIERT AND SONS INC | HATFIELD | PA |
A T & T | ALLENTOWN | PA |
A T & T | POTTSTOWN | PA |
A T & T | WAYNE | PA |
A T & T CO. | READING | PA |
A. Berg Co. | Philadelphia | PA |
A. & P. ROBERTS COMPANY | PENCOYD | PA |
A. & S. WILSON COMPANY | PITTSBURGH | PA |
A. & S. WILSON COMPANY | ALLEGHENY | PA |
A. BARLETTA & SONS | HAZELTON | PA |
A. BLUMBERG & SONS | PHILADELPHIA | PA |
A. Darrah Contractors | Philadelphia | PA |
A. DERUY | SOUTH BETHLEHEM | PA |
A. FRENCH SPRING COMPANY | PITTSBURGH | PA |
A. GARRISON FOUNDRY COMPANY | PITTSBURGH | PA |
A. GUCKENHEIMER & BROTHERS | FREEPORT | PA |
A. Hirsch Air Company | Philadelphia | PA |
A. MOE & COMPANY | PHILADELPHIA | PA |
A. OVERHOLT & COMPANY | BROAD FORD | PA |
A. PARDEE & COMPANY | HAZELTON | PA |
A. WILHELM COMPANY | READING | PA |
A.B.E. AIRPORT | ALLENTOWN | PA |
A.C. & S. | Lancaster | PA |
A.C. & S., INCORPORATED | PHILADELPHIA | PA |
A.C. OVERHOLT & COMPANY | BROAD FORD | PA |
A.E. STALEY MANUFACTURING CO. – CORN PLANT | MORRISVILLE | PA |
A.G. Vento Plumbing Co. | Greenville | PA |
A.H. WIRZ, INCORPORATED | CHESTER | PA |
A.I.W. FRANK CORPORATION | EXTON | PA |
A.J. CAMERON COMPANY | PHILADELPHIA | PA |
A.J. HAWS & SONS LIMITED | JOHNSTOWN | PA |
A.K. GARRETT COMPANY | PHILADELPHIA | PA |
A.M. BYERS COMPANY | AMBRIDGE | PA |
A.M. BYERS COMPANY | PITTSBURGH | PA |
A.M. BYERS COMPANY, INCORPORATED | PITTSBURGH | PA |
A.P. Green | Philadelphia | PA |
A.P. GREEN | TARENTUM | PA |
A.P. GREEN | TARENTUM-TARENTUM | PA |
A.P. GREEN FIRE BRICK COMPANY | PHILADELPHIA | PA |
A.P. GREEN FIRE BRICK COMPANY | TARENTUM | PA |
A.P. GREEN FIRE BRICK COMPANY OF W NY | TITUSVILLE | PA |
A.P. GREEN FIRE BRICK COMPANY, REMMEY DIVISION | PHILADELPHIA | PA |
A.P. GREEN INDUSTRIES – REFRACTORY PLANT | PHILADELPHIA | PA |
A.P. GREEN REFRACTORIES COMPANY | PHILADELPHIA | PA |
A.P. GREEN SERVICES, INCORPORATED | PHILADELPHIA | PA |
A.P. GREEN, REMMEY DIVISION | PHILADELPHIA | PA |
A.S. SITER & SONS | MORTON | PA |
A.T. & T. SOLID STATE TECHNOLOGY CENTER | LEIGH COUNTY | PA |
A.T. & T. TECHNOLOGIES | ALLENTOWN | PA |
A.W. CADMAN MANUFACTURING | PITTSBURGH | PA |
A.Y. MICHIE | PHILADELPHIA | PA |
ABBOTTS DAIRIES INC | BELLEVILLE | PA |
ABBOTTS DAIRY | BELLEVILLE | PA |
Abington High School | Abington | PA |
Abington Hospital | Abington | PA |
Abington School District | Abington | PA |
ABRAMS STORAGE YARD | EAST BRIDGEPORT | PA |
ABROQAST BASTIN COMPANY | ALLENTOWN | PA |
Ac & S Inc. | Lancaster | PA |
AC&S | Pittsburgh | PA |
ACADEMY OF MUSIC – BROAD STREET | PHILADELPHIA | PA |
Academy of the New Church | Bryn Athyn | PA |
ACANDS, INC. | PITTSBURGH | PA |
ACCO – Building Insulation | Lancaster | PA |
ACE MOTOR COMPANY | PHILADELPHIA | PA |
Acf Industries | Berwick | PA |
ACHENBACH & BUTLER, INC. | PHILADELPHIA | PA |
ACHENBACH & BUTLER, INC. – OFFICE BUILDING | PHILADELPHIA | PA |
Achenbach Butler | Philadelphia | PA |
Acme | Philadelphia | PA |
ACME HARDESTY INDUSTRIES | PHILADELPHIA | PA |
ACME HEAT TREAT, INC | PHILADELPHIA | PA |
ACME IRON & METAL COMPANY | PHILADELPHIA | PA |
ACME MARKET | NANTY GLO | PA |
ACME MARKETS | PHILADELPHIA | PA |
ACME MARKETS | OVERBROOK | PA |
Acme Markets Warehouse | Reading | PA |
ACME TEA COMPANY | PHILADELPHIA | PA |
ACME WAREHOUSE – 30TH & OXFORD | PHILADELPHIA | PA |
ACOUSTICRAFT, INCORPORATED, ELM AND POPLAR STS. | CONSHOHOCKEN | PA |
ADAIRE ALEXANDER SCHOOL – EAST PALMER STREET | PHILADELPHIA | PA |
ADAMS APPLE PRODUCTS | BENDERSVILLE | PA |
ADAMS MINE | IRWIN | PA |
Adelta Manufacturing | Philadelphia | PA |
Adley Express Company | Philadelphia | PA |
ADRIAN FURNACE | DUBOIS | PA |
Advanced Specialty Company | Lansdale | PA |
Aero Supply Manufacturing | Corry | PA |
AETNA CHEMICAL COMPANY | CARNEGIE | PA |
AETNA CHEMICAL COMPANY | OAKDALE | PA |
AETNA EXPLOSIVE COMPANY | EMPORIUM | PA |
AETNA EXPLOSIVES COMPANY, INCORPORATED | MT. UNION | PA |
Aetna Standard | Ellwood City | PA |
AGGREGATES EQUIPMENT COMPANY | LEOLA | PA |
AIKEN MEDICAL BUILDING | PITTSBURGH | PA |
AIR MASTER | PHILADELPHIA | PA |
Air Production Sales | Johnstown | PA |
AIR PRODUCTS & CHEMICALS | ALLENTOWN | PA |
AIR PRODUCTS CO. | ALLENTOWN | PA |
Air Products, Inc. | Emmaus | PA |
Air Products, Inc. | Pittsburgh | PA |
Air Reduction Plant | Bethlehem | PA |
Air Reduction Sales Company | Bethlehem | PA |
Air Reduction Sales Company | Butler | PA |
Air Reduction Sales Company | Enola | PA |
Airco | Butler | PA |
AIRCO SPEER CARBON PRODUCTS | ST. MARYS | PA |
Airco Speer Corporation | St. Mary | PA |
AIRMASTER, INCORPORATED | PHILADELPHIA | PA |
Ajax Ironworks | Corry | PA |
AJAX METALS COMPANY | PHILADELPHIA | PA |
ALAMOGORDO LUMBER COMPANY | SCRANTON | PA |
ALAN WOOD IRON & STEEL COMPANY | CONSHOHOCKEN | PA |
ALAN WOOD IRON & STEEL COMPANY | SWEDELAND | PA |
ALAN WOOD IRON & STEEL COMPANY, STEEL DEPARTMENT | CONSHOHOCKEN | PA |
Alan Wood Steel | Philadelphia | PA |
ALAN WOOD STEEL | NORRISTOWN | PA |
ALAN WOOD STEEL | CONSHOHOCKEN | PA |
ALAN WOOD STEEL – RINER ROAD | CONSHOHOCKEN | PA |
Alan Wood Steel Co. | Conschohocken | PA |
Alan Wood Steel Co. | Conshohocken | PA |
Alan Wood Steel Co. | Ivy Rock | PA |
ALAN WOOD STEEL COMPANY | CONSHOHOCKEN | PA |
ALAN WOOD STEEL COMPANY – BLAST FURNACE DEPT. | SWEDELAND / CONSHOSHOKEN | PA |
ALAN WOOD STEEL, RINER RD. | CONSHOHOCKEN | PA |
ALBERT STOVER | KINTERSVILLE | PA |
ALBRIGHT COAL COMPANY | POTTSVILLE | PA |
ALBRIGHT COAL COMPANY | LLEWELLYN | PA |
ALCANIA TIN PLATE COMPANY | AVONMORE | PA |
Alcoa | New Kensington | PA |
Alcoa | Cressona | PA |
Alcoa | Pittsburgh | PA |
ALCOA | MCKEES ROCKS | PA |
Alcoa (F/K/A Reynolds Metals) | Canonsburg | PA |
Alcoa (F/K/A Reynolds Metals) | Glassmere | PA |
Alcoa (F/K/A Reynolds Metals) | Pittsburgh | PA |
Alcoa Building | Pittsburgh | PA |
Alcoa Laboratory | New Kensington | PA |
ALCOA NEW KENSINGTON WORKS | NEW KENSINGTON | PA |
ALCOA RESEARCH LAB | NEW KENSINGTON | PA |
ALCOA RESEARCH LABORATORIES | NEW KENSINGTON | PA |
ALCOA RESEARCH LABS | NEW KENSINGTON | PA |
ALCOA RESEARCH LABS | PITTSBURGH | PA |
ALCOA TECHNICAL CENTER | MERWIN | PA |
ALCOA TECHNICAL CENTER | ALCOA CENTER | PA |
Alcoa, Cressona Work | Cressona | PA |
ALDEN COAL COMPANY | ALDEN | PA |
ALDON RUG MILLS | LENNI | PA |
ALEQUIPPA STEEL COMPANY | PITTSBURGH | PA |
ALEX CROW AND SON | PHILADELPHIA | PA |
Alexander Brothers | Philadelphia | PA |
Alexander Good Elementary School | York | PA |
Alexander Plumbing Company | Pittsburgh | PA |
Algonquin Chemical Co | Hamburg | PA |
ALGONQUIN COAL COMPANY | WILKES BARRE | PA |
ALGONQUIN COAL COMPANY | MINERS MILLS | PA |
Aliquippa & Southern Railroad | Aliquippa | PA |
ALIQUIPPA HIGH SCHOOL | ALIQUIPPA | PA |
ALIQUIPPA JUNIOR HIGH SCHOOL | ALIQUIPPA | PA |
ALIQUIPPA STEEL COMPANY | PITTSBURGH | PA |
Aliquippa Works | Aliquippa | PA |
ALIQUIPPA WORKS | WOODLAWN | PA |
ALIQUIPPA WORKS – ALIQUIPPA TRUCK STATION 103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – NORTH MILL PIPE SHOP – TRUCK STATION #27 (274399) | ALIQUIPPA | PA |
ALIQUIPPA WORKS – NORTH PIPE SHOP – TRUCK STATION NUMBER 27 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – NORTH PIPE SHOP TRUCK STATION NBR | ALIQUIPPA | PA |
ALIQUIPPA WORKS – PIPE SHOP – TRUCK STATION NBR 27 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – PIPE SHOP – TRUCK STATION NO. 7 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – STA. 27 N. M. PIPE SHOP | ALIQUIPPA | PA |
ALIQUIPPA WORKS – STA. 27 N. M. PIPE SHOP – S. G. FELGAR A-52107 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – STATION #103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – STATION 27 – NM PIPE SHOP | ALIQUIPPA | PA |
ALIQUIPPA WORKS – STATION 27 N. M. PIPE SHOP | ALIQUIPPA | PA |
ALIQUIPPA WORKS – TRACK STATION NBR 103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – TRUCK STATION 103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – TRUCK STATION 27 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – TRUCK STATION NBR 013 | ALIQUIPPA | PA |
ALIQUIPPA WORKS – TRUCK STATION NBR 103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS SUPPLY DEPT. – TRUCK STATION #103 | ALIQUIPPA | PA |
ALIQUIPPA WORKS TRUCK STA NBR 103 | ALIQUIPPA | PA |
ALL STATE INSURANCE CO | TREDYFFRIN TOWNSHIP | PA |
ALL STATE INSURANCE COMPANY OFFICE BUILDING | TREDYFFRIN TOWNSHIP | PA |
ALLAN WOOD IRON AND STEEL COMPANY | IVY ROCK | PA |
ALLEGHANY AIRPORT, PITTSBURGH AIRPORT | PITTSBURGH | PA |
ALLEGHANY LUDLUM STEEL | CLAIRTON | PA |
ALLEGHANY LUDLUM STEEL | LEECHBURG | PA |
Alleghany Power Company | Courtney | PA |
Allegheny Airlines Terminal | Pittsburgh | PA |
ALLEGHENY BY-PRODUCT COKE COMPANY | GLASSPORT | PA |
ALLEGHENY BY-PRODUCTS COMPANY | GLASSPORT | PA |
Allegheny Chemical | Neville Island | PA |
ALLEGHENY CITY ELECTRIC LIGHT COMPANY – POWER PLANT | ALLEGHENY | PA |
Allegheny County Airport | West Mifflin | PA |
ALLEGHENY COUNTY HOME | WOODVILLE | PA |
ALLEGHENY COUNTY HOME FOR DESTITUTE | PITTSBURGH | PA |
ALLEGHENY COUNTY INSTITUTION DISTRICT | WOODVILLE | PA |
ALLEGHENY COUNTY POOR FARM | WOODVILLE | PA |
ALLEGHENY COUNTY SANITARY AUTHORITY | PITTSBURGH | PA |
ALLEGHENY COUNTY STEAM HEATING CO. – 12TH ST. HEATING PLANT | PITTSBURGH | PA |
ALLEGHENY COUNTY STEAM HEATING CO. – DUQUESNE BUILDING 3RD FLOOR | PITTSBURGH | PA |
Allegheny County Steam Heating Co. – Stanwix Plant | Pittsburgh | PA |
Allegheny County Steam Heating Co. – Stanwix Plant – 3rd Floor | Pittsburgh | PA |
Allegheny County Steam Heating Co. – Stanwix Plant – Storeroom | Pittsburgh | PA |
ALLEGHENY COUNTY STEAM HEATING CO. – STEAM HEATING PLANT | PITTSBURGH | PA |
Allegheny County Steam Heating Co. – Twelfth Street Heating Plant | Pittsburgh | PA |
ALLEGHENY COUNTY WORKHOUSE | BLAWNOX | PA |
ALLEGHENY COUNTY WORKHOUSE | CLAREMONT | PA |
ALLEGHENY COUNTY WORKHOUSE | HOBOKEN | PA |
ALLEGHENY COUNTY WORKHOUSE | PITTSBURGH | PA |
ALLEGHENY ENERGY | COURTNEY | PA |
ALLEGHENY ENERGY | KITTANNING | PA |
ALLEGHENY ENERGY SERVICE CORPORATION, FT. MARTIN | GREENSBURG | PA |
ALLEGHENY ENERGY SERVICE CORPORATION, RIVESVILLE | GREENSBURG | PA |
ALLEGHENY ENERGY SERVICE CORPORATION, WILLOW ISLAND | GREENSBURG | PA |
ALLEGHENY ENERGY SUPPLY COMPANY | COURTNEY | PA |
ALLEGHENY ENERGY SUPPLY COMPANY | GREENSBURG | PA |
ALLEGHENY ENERGY SUPPLY COMPANY | MASONTOWN | PA |
ALLEGHENY ENERGY SUPPLY COMPANY | SPRINGDALE | PA |
ALLEGHENY FURNACE | ALTOONA | PA |
ALLEGHENY GAS COMPANY – GAS PLANT | ALLEGHENY | PA |
Allegheny Gasket | Bethelport | PA |
Allegheny Gasket | Library | PA |
ALLEGHENY GENERAL HOSPITAL | PITTSBURGH | PA |
ALLEGHENY HEATING COMPANY | ALLEGHENY | PA |
ALLEGHENY HIGH SCHOOL | ALLEGHENY | PA |
Allegheny Industrial Supply | Tarentum | PA |
Allegheny Insulation Company | Millvale & Pittsburgh | PA |
Allegheny Ludlum | BRACKENRIDGE | PA |
ALLEGHENY LUDLUM STEEL | BRACKENRIDGE | PA |
ALLEGHENY LUDLUM STEEL | BRECKENRIDGE | PA |
Allegheny Ludlum Steel Co | Brackenridge | PA |
ALLEGHENY LUDLUM STEEL CORP. | BRACKENRIDGE | PA |
ALLEGHENY LUDLUM STEEL CORP. | WEST LEECHBURG | PA |
ALLEGHENY LUDLUM STEEL CORP. | LEECHBURG | PA |
ALLEGHENY LUDLUM STEEL CORP. – MOLD PREPARATORY BLDG. | BRACKENRIDGE | PA |
ALLEGHENY LUDLUM STEEL CORPORATION | BRACKENRIDGE | PA |
ALLEGHENY LUDLUM STEEL CORPORATION | WEST LEECHBURG | PA |
ALLEGHENY LUDLUM STEEL CORPORATION | WASHINGTON | PA |
ALLEGHENY PLASTICS COMPANY | CORAOPOLIS | PA |
ALLEGHENY PLATE GLASS COMPANY | HITE | PA |
ALLEGHENY PLATE GLASS COMPANY | GLASSMERE | PA |
Allegheny Power Co – Hatfield Ferry Station | Masontown | PA |
ALLEGHENY REFINING COMPANY | VERONA | PA |
ALLEGHENY STEEL COMPANY | BRACKENRIDGE | PA |
ALLEGHENY VALLEY HOSPITAL | NATRONA HEIGHTS | PA |
ALLEGHENY VALLEY STREET RAILWAY COMPANY | PITTSBURGH | PA |
ALLEGHENY VALLEY STREET RAILWAY COMPANY | TARENTUM | PA |
ALLEGHENY VALLEY WATER COMPANY – WATER PLANT | TARENTUM | PA |
ALLEN LAUNDRY | ALLENTOWN | PA |
ALLEN PRODUCTS COMPANY | ALLENTOWN | PA |
ALLEN PRODUCTS COMPANY, INCORPORATED | ALLENTOWN | PA |
ALLEN SHERMAN HOFF CO | WYNNEWOOD | PA |
Allen Sherman Hoff Co. | Hamburg | PA |
ALLENTOWN | ALLENTOWN | PENNSYLVANIA |
ALLENTOWN AND KURTZTOWN TRACTION COMPANY | ALLENTOWN | PA |
ALLENTOWN HIGH SCHOOL | ALLENTOWN | PA |
ALLENTOWN HOSPITAL | ALLENTOWN | PA |
ALLENTOWN HOSPITAL – BOILER HOUSE | ALLENTOWN | PA |
Allentown Port Cement | Evansville | PA |
Allentown Portland Cement Company | Evansville | PA |
ALLENTOWN PORTLAND CEMENT COMPANY | ALLENTOWN | PA |
ALLENTOWN RAPID SERVICE ICE COMPANY | ALLENTOWN | PA |
Allentown State Hospital | Allentown | PA |
Allentown Water Works | Allentown | PA |
ALLENTOWN-BETHLEHEM GAS COMPANY – GAS PLANT | ALLENTOWN | PA |
Allenwood Steel | Phoenixville | PA |
Allenwood Steel | Conshohocken | PA |
Allenwood Steel | Norristown | PA |
Allenwood Steel Co | Sweedeland | PA |
Allied Chemical | Newell | PA |
Allied Chemical | Marcus Hook | PA |
Allied Chemical | Philadelphia | PA |
ALLIED CHEMICAL – BRIDESBURG | PHILADELPHIA | PA |
ALLIED CHEMICAL – BRIDESBURG PLANT | PHILADELPHIA | PA |
ALLIED CHEMICAL – BRIDGE STREET | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORP. | FRANKFORD | PA |
ALLIED CHEMICAL & DYE CORP. | SUNBURY | PA |
ALLIED CHEMICAL & DYE CORP. | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORP. – BARRETT DIVISION | BETHLEHEM | PA |
ALLIED CHEMICAL & DYE CORP. – FRANKFORD PLANT | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORP. – NEW PHENOL PLANT | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORP. – WAKEFIELD ST. ENTRANCE, NEW PHOENOL | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORPORATION | FRANKFORD | PA |
ALLIED CHEMICAL & DYE CORPORATION | PHILADELPHIA | PA |
ALLIED CHEMICAL & DYE CORPORATION BARRETT DIVISION | PHILADELPHIA | PA |
Allied Chemical Company – Frankford Plant | Philadelphia | PA |
ALLIED CHEMICAL CORP. | NEWELL | PA |
ALLIED CHEMICAL CORP. | SUNBURY | PA |
ALLIED CHEMICAL CORP. – BAKER & ADAMSON PLANT | MARCUS HOOK | PA |
Allied Chemical Corporation | Philadelphia | PA |
ALLIED CHEMICAL CORPORATION | BETHLEHEM | PA |
ALLIED CHEMICAL CORPORATION | BRIDESBURG | PA |
ALLIED CHEMICAL CORPORATION | BRIDGESBURG | PA |
ALLIED CHEMICAL CORPORATION | YOUNGSTOWN | PA |
ALLIED MILLS, INCORPORATED | EVERSON | PA |
ALLIED SERVICES HANDICAPPED | SCRANTON | PA |
ALLIED SIGNAL, INCORPORATED | PHILADELPHIA | PA |
ALLIS CHALMERS | YORK | PA |
ALLIS CHALMERS MFG. CO. | PITTSBURGH | PA |
ALLIS-CHALMERS MANUFACTURING COMPANY | YORK | PA |
ALLOY MFG. COMPANY | PITTSBURGH | PA |
ALLOY PROPELLER COMPANY, RT. 19 | ZELIENPOLE | PA |
ALLOY ROD | HANOVER | PA |
Alloy Rod Plant | Hanover | PA |
Alloy Rods Company and Chemetron Corporation | Hanover | PA |
Alloy Rods Company and Chemetron Corporation | York | PA |
Alloy Rods Corporation | York | PA |
Alloy Rods Corporation | Hanover | PA |
ALLOY STEEL | SOUTHAMPTON | PA |
Allstate Distributors Inc | Sharon | PA |
ALON ENGINEERING CORP | PITTSBURGH | PA |
ALON ENGINEERING, INCORPORATED | CREIGHTON | PA |
ALPHA PORTLAND CEMENT CO | EASTON | PA |
ALPHA PORTLAND CEMENT COMPANY | HOWELLS | PA |
ALPHA PORTLAND CEMENT COMPANY | PITTSBURGH | PA |
ALPHA PORTLAND CEMENT COMPANY | EASTON | PA |
ALPHA PORTLAND CEMENT COMPANY | MARTINS CREEK | PA |
ALPHA PORTLAND CEMENT COMPANY, MILL #4 | MARTINS CREEK | PA |
ALPINE KNITTING MILLS | PITTSTON | PA |
ALPINE KNITTING MILLS | PITTSTOSS | PA |
ALTHOUSE DIVISION | GIBRALTOR | PA |
ALTMAN STORE, LANCASTER PK. AND IVEN RD. | RADNOR | PA |
Altoona Area School District | Altoona | PA |
ALTOONA CAR SHOPS | ALTOONA | PA |
ALTOONA HIGH SCHOOL | ALTOONA | PA |
ALTOONA HOSPITAL | ALTOONA | PA |
ALTOONA PIPE AND STEEL PLANT | ALTOONA | PA |
Altoona Pipe And Steel Supply Co. | Altoona | PA |
ALTOONA SCHOOL DISTRICT, ALTOONA HIGH SCHOOL | ALTOONA | PA |
ALTOONA VOCATIONAL TECHNOLOGY HIGH SCHOOL | ALTOONA | PA |
ALUMINUM CO OF AMERICA | CRESSONA | PA |
ALUMINUM CO OF AMERICA | PITTSBURGH | PA |
Aluminum Company of America | Pittsburgh | PA |
Aluminum Company of America | Philadelphia | PA |
ALUMINUM COMPANY OF AMERICA | LEBANON | PA |
ALUMINUM COMPANY OF AMERICA | LOGANS FERRY | PA |
ALUMINUM COMPANY OF AMERICA | MERWIN | PA |
ALUMINUM COMPANY OF AMERICA | NEW KENSINGTON | PA |
ALUMINUM COMPANY OF AMERICA | CRESSONA | PA |
ALUMINUM COMPANY OF AMERICA | LANCASTER | PA |
ALUMINUM COMPANY OF AMERICA (ALCOA) | SCHUYLKILL COUNTY | PA |
ALUMINUM COMPANY OF AMERICA (ALCOA) – WAREHOUSE BLDG. #242 | NEW KENSINGTON | PA |
ALUMINUM COMPANY OF AMERICA, ALUMINUM PLANT | ERIE | PA |
ALUMINUM CORPORATION OF AMERICA | LANCASTER | PA |
ALUMINUM SMELTING CORPORATION | PHILADELPHIA | PA |
AM. DEPARTMENT | MIDDLETOWN | PA |
AMALGAMATED SILK CORPORATION | ALLENTOWN | PA |
AMBER REALTY COMPANY | PHILADELPHIA | PA |
AMBRIC TESTING AND ENGINEER | PHILADELPHIA | PA |
AMBROSE AUGUSTERFER CORPORATION | HOLLIDAYSBURG | PA |
AMCHEM PRODUCTS INC | AMBLER | PA |
AMERGEN ENERGY COMPANY, LLC | MIDDLETOWN | PA |
AMERGEN ENERGY COMPANY, LLC, T.M.I. #1 | MIDDLETOWN | PA |
AMERGEN ENERGY COMPANY, LLC, T.M.I. #2 | MIDDLETOWN | PA |
AMERICA OLEAN TILE COMPANY | LANDALE | PA |
American Aniline Products Company | Lockhaven | PA |
American Asbestos | Norristown | PA |
American Asbestos Textile Co. | Norristown | PA |
AMERICAN AUSTIN CAR COMPANY | BUTLER | PA |
AMERICAN AXE AND TOOL COMPANY | BEAVER FALLS | PA |
AMERICAN AXE AND TOOL COMPANY | GLASSPORT | PA |
American Bank | Lafayette Hill | PA |
AMERICAN BANK NOTE COMPANY | PHILADELPHIA | PA |
AMERICAN BANTAM CAR COMPANY | BUTLER | PA |
AMERICAN BAPTIST PUBLICATION SOCIETY | PHILADELPHIA | PA |
AMERICAN BRAKE SHOE COMPANY | NEW CASTLE | PA |
AMERICAN BRAKE SHOE COMPANY, NATIONAL BEARING DIVISION | MEADVILLE | PA |
American Bridge | Leetsdale | PA |
American Bridge | Ambridge | PA |
AMERICAN BRIDGE | CLAIRTON | PA |
AMERICAN BRIDGE COMPANY | AMBRIDGE | PA |
AMERICAN BRIDGE COMPANY | ECONOMY | PA |
AMERICAN BRIDGE COMPANY | PHILADELPHIA | PA |
AMERICAN BRIDGE COMPANY | PITTSBURGH | PA |
AMERICAN BRIDGE COMPANY | PENCOYD | PA |
AMERICAN BRIDGE DIVISION | NORTHAMPTON | PA |
American Bridge Division of U.S. Steel | Ambridge | PA |
American Bridge Division of U.S. Steel Corporation | Pittsburgh | PA |
American Bridge Shipyard | Pittsburgh | PA |
American Can | Fairless | PA |
AMERICAN CAN CO | CHAMBERSBURG | PA |
AMERICAN CAN CO | EATON | PA |
American Can Company | Morrisville | PA |
AMERICAN CAN COMPANY | PHILADELPHIA | PA |
AMERICAN CAN COMPANY | FAIRLESS HILLS | PA |
AMERICAN CAN COMPANY – Delaware Ave. & Palmar Street | PHILADELPHIA | PA |
American Car & Foundry | Wilkes Barre | PA |
American Car & Foundry Company | Berwick | PA |
AMERICAN CAR AND FOUNDRY COMPANY | MILTON | PA |
AMERICAN CAR AND FOUNDRY COMPANY | BERWICK | PA |
AMERICAN CHAIN & CABLE | MONESSEN | PA |
AMERICAN CHAIN & CABLE COMPANY | READING | PA |
American Chain And Cable | Braddock | PA |
AMERICAN CHAIN COMPANY | EAST YORK | PA |
AMERICAN CIGAR COMPANY | PHILADELPHIA | PA |
AMERICAN CLEAN TILE | LANSDALE | PA |
AMERICAN COKE COMPANY | PITTSBURGH | PA |
AMERICAN COKE COMPANY | LAMBERT | PA |
American Cyanamid | Bridgeville | PA |
AMERICAN CYANAMID CO | BRIDGEVILLE | PA |
AMERICAN CYANAMID CO – BRIDGEVILLE PLANT | BRIDGEVILLE | PA |
AMERICAN CYANAMID CO – PAA PLANT | BRIDGEVILLE | PA |
American Cyanamid Co. | Bridgeville | PA |
American Cyanamid Company | Bridgeville | PA |
AMERICAN DREDGE | CHESTER | PA |
AMERICAN DREDGING – FOURTH FLOOR REAR | PHILADELPHIA | PA |
AMERICAN DREDGING COMPANY | PHILADELPHIA | PA |
AMERICAN DYEWOOD COMPANY | CHESTER | PA |
AMERICAN ELECTRONICS LAB | COLMAR | PA |
AMERICAN ENGINEERING CO | PHILADELPHIA | PA |
AMERICAN ENGINEERING COMPANY | PHILADELPHIA | PA |
American Hardware Supply | Parkesburg | PA |
American Industrial Contracting | Glenfield | PA |
American Industrial Contracting | Oil City | PA |
American Industrial Contracting | Sewickley | PA |
AMERICAN INDUSTRIAL CONTRACTOR | ALLISON PARK | PA |
AMERICAN INDUSTRIAL, EAST BEAVER ST. | GLENFIELD | PA |
AMERICAN INSULATED WIRE CORPORATION | NEW FREEDOM | PA |
American Insulator Corp. | New Freedom | PA |
AMERICAN IRON & STEEL COMPANY | LEBANON | PA |
AMERICAN IRON STEEL MANUFACTURING COMPANY | LEBANON | PA |
AMERICAN IRON-STEEL MANUFACTURING COMPANY, CENTRAL WORKS | LEBANON | PA |
AMERICAN LACE MANUFACTURING COMPANY | GERMANTOWN | PA |
AMERICAN LEGION BUILDING – BROAD STREET | PITTSBURGH | PA |
American Locomotive – Railway Steel | Latrobe | PA |
American Locomotive Co. | Latrobe | PA |
AMERICAN LOCOMOTIVE COMPANY | CHESTER | PA |
AMERICAN LOCOMOTIVE COMPANY | ALLEGHENY | PA |
AMERICAN MACHINE & FOUNDR | YORK | PA |
AMERICAN MACHINE AND FOUNDR | YORK | PA |
American Machine And Foundry Co. | York | PA |
AMERICAN MAGNESIA AND COVERING COMPANY | WHITE MARSH JUNCTION | PA |
AMERICAN MAGNESIA AND COVERING COMPANY | PLYMOUTH MEETING | PA |
American Motors | Dubois | PA |
AMERICAN OIL COMPANY | YORKTOWN | PA |
AMERICAN OLEAN | QUAKERTOWN | PA |
American Olean Tile | Lansdale | PA |
AMERICAN OLEAN TILE CO, INC | LANSDALE | PA |
AMERICAN OLEAN TILE COMPANY | QUAKERTOWN | PA |
AMERICAN OLEAN TILE COMPANY | LANSDALE | PA |
AMERICAN PAPER PRODUCTS COMPANY | LANCASTER | PA |
AMERICAN PILE FABRIC COMPANY | PHILADELPHIA | PA |
AMERICAN PIPE MANUFACTURING COMPANY | PHILADELPHIA | PA |
AMERICAN RADIATOR & STANDARD SANITARY CORPORATION – BESSEMER BUILDING | PITTSBURGH | PA |
AMERICAN RADIATOR & STANDARD SANITARY CORPORATION, BESSEMER BUILDING | PITTSBURGH | PA |
AMERICAN RADIATOR AND STANDARD SANITARY CORPORATION | PITTSBURGH | PA |
AMERICAN RAILWAY COMPANY | PHILADELPHIA | PA |
AMERICAN RAILWAY COMPANY | TRYONE | PA |
AMERICAN ROAD MACHINE COMPANY | KENNETT SQUARE | PA |
AMERICAN ROLLING MILL COMPANY | BUTLER | PA |
AMERICAN S. & W. COMPANY | ALLEGHENY | PA |
AMERICAN S. & W. COMPANY | PITTSBURGH | PA |
American Salvage Company | Philadelphia | PA |
AMERICAN SCHACK CO, INC | WEXFORD | PA |
AMERICAN SHEET & TIN PLATE COMPANY | DEMMLER | PA |
AMERICAN SHEET & TIN PLATE COMPANY | NEW CASTLE | PA |
AMERICAN SHEET & TIN PLATE COMPANY | NEW KENSINGTON | PA |
AMERICAN SHEET & TIN PLATE COMPANY | PITTSBURGH | PA |
AMERICAN SHEET & TIN PLATE COMPANY | SCOTTDALE | PA |
AMERICAN SHEET & TIN PLATE COMPANY | VANDERGRIFT | PA |
AMERICAN SHEET & TIN PLATE COMPANY | LEECHBURG | PA |
AMERICAN SHEET AND TIN PLATE COMPANY | PITTSBURGH | PA |
AMERICAN SHEET AND TIN PLATE COMPANY | MONESSEN | PA |
AMERICAN SHEET AND TIN PLATE COMPANY | SCOTTDALE | PA |
AMERICAN SHEET AND TIN PLATE COMPANY | DEMMLER | PA |
AMERICAN SHEET AND TIN PLATE COMPANY, FARREEE WORKS | FARREEE | PA |
AMERICAN SHEET STEEL COMPANY | PITTSBURGH | PA |
AMERICAN SHEET STEEL COMPANY | LEECHBURG | PA |
AMERICAN SHEET STEEL COMPANY | MCKEESPORT | PA |
AMERICAN ST GOBAIN GLASS | JEANETTE | PA |
American Standard | Trenton | PA |
American Steel | Pittsburgh | PA |
AMERICAN STEEL & WIRE | PITTSBURGH | PA |
AMERICAN STEEL AND WIRE COMPANY | PITTSBURGH | PA |
AMERICAN STEEL AND WIRE COMPANY | ALLENTOWN | PA |
AMERICAN STEEL AND WIRE COMPANY | DONORA | PA |
AMERICAN STEEL AND WIRE COMPANY | RANKIN | PA |
AMERICAN STEEL AND WIRE COMPANY | BRADDOCK | PA |
AMERICAN STEEL AND WIRE COMPANY | BEAVER FALLS | PA |
AMERICAN STEEL HOOP COMPANY | PITTSBURGH | PA |
AMERICAN STEEL HOOP COMPANY | ALLEGHENY | PA |
AMERICAN STORES COMPANY, INCORPORATED | PHILADELPHIA | PA |
American Sugar | Philadelphia | PA |
AMERICAN SUGAR COMPANY | PHILADELPHIA | PA |
AMERICAN TUBE AND IRON COMPANY | MIDDLETOWN | PA |
AMERICAN TYPE FOUNDERS COMPANY | PHILADELPHIA | PA |
AMERICAN VERICOSE CORP | LEWISTON | PA |
American Viscose | Philadelphia | PA |
AMERICAN VISCOSE CORP. | MARCUS HOOK | PA |
American Viscose Corporation | Marcus Hook | PA |
AMERICAN VISCOSE CORPORATION | MEADVILLE | PA |
American Viscose Plant | Lewistown | PA |
AMERICAN WARMING & VENTILATING COMPANY | PITTSBURGH | PA |
AMERICAN WARMING & VENTILATING COMPANY | ALTOONA | PA |
American Water Works & Electric Company | Pittsburgh | PA |
American Welding Company | Carbondale | PA |
AMERICAN ZINC & CHEMICAL COMPANY | BURGETTSTOWN | PA |
AMERICAN ZINC & CHEMICAL COMPANY | LANGELOTH | PA |
Ametek | Sellersville | PA |
Amjohn Incorporated | Carnegie | PA |
AMOROSO BAKERY | PHILADELPHIA | PA |
AMP, INCORPORATED, INTERSTATE 83 | HARRISBURG | PA |
AMP, INCORPORATED, MAIN OFFICE BUILDING, RT. 283 | DAUPHIN COUNTY | PA |
AMPCO METALS INCORPORATED | EDDINGTON | PA |
AMSTAR SUGAR – DELAWARE AVENUE | PHILADELPHIA | PA |
Amstar Sugar Factory | Philadelphia | PA |
AMTRAK SHOPS | NOT PROVIDED | PA |
ANCHOR BREWING COMPANY | TARENTUM | PA |
ANCHOR GLASS CONTAINER CORPORATION | CONNELLSVILLE | PA |
Anchor Hocking Glass Corp. | Lancaster | PA |
ANCHOR HOCKING GLASS CORPORATION | CONNELLSVILLE | PA |
Anchor Supply Company | Carnegie | PA |
ANITA COAL MINING COMPANY | PUNXSUTAWNEY | PA |
ANNEX HOTEL COMPANY | PITTSBURGH | PA |
ANSELM SCHOOL, 7446 MCCLURE AVE. | PITTSBURGH | PA |
Anthony Compola Plumbing | Philadelphia | PA |
ANTHRACITE BRIQUETTE COMPANY | SUNBURY | PA |
ANTIOCH BUILDING | PITTSBURGH | PA |
Anvil International | Columbia | PA |
Ap Green | Philadelphia | PA |
AP Green Refractories Division | Tarentum | PA |
AP Green Refractories Remmey Division | Philadelphia | PA |
APOLLO GAS COMPANY – PUMPING STATION | TEMPLETON | PA |
APOLLO IRON & STEEL COMPANY | PITTSBURGH | PA |
APOLLO IRON & STEEL COMPANY | APOLLO | PA |
APOLLO IRON & STEEL COMPANY | VANDERGRIFT | PA |
APOLLO IRON & STEEL COMPANY | TEMPLETON | PA |
Appleby Brothers & Whittaker | Harrisburg | PA |
APPLETON PAPERS, INCORPORATED | ROARING SPRINGS | PA |
APPLIED ENERGY SERVICES CORPORATION | MONACA | PA |
Aquitaine Chemical Co | Birdsboro | PA |
AQUITAINE CHEMICAL PLANT | BIRDSBORO | PA |
Arbogast & Bastian | Allentown | PA |
Arbogast & Bastlan Company | Allentown | PA |
ARBUCKLE AND COMPANY | PITTSBURGH | PA |
ARBUCKLE, RYAN & COMPANY, INCORPORATED | PITTSBURGH | PA |
ARCADE BUILDING | PHILADELPHIA | PA |
ARCADE REAL ESTATE COMPANY | PHILADELPHIA | PA |
ARCHBISHOP CARROLL HIGH SCHOOL | RADNOR | PA |
ARCHIBALD COLLY | ARCHIBALD | PA |
ARCHITECTURAL STEEL | PHILADELPHIA | PA |
Arco | Philadelphia | PA |
Arco (Atlantic Richfield Company) | Point Breeze | PA |
Arco Atlantic Refinery | Philadelphia | PA |
ARCO CHEMICAL | NEWTOWN | PA |
Arco Chemical Koppers | Monaca | PA |
Arco Oil Refinery | Philadelphia | PA |
Arco Polymer | Monaca | PA |
ARCO POLYMERS | MONACO | PA |
ARCO REFINERY | PHILADELPHIA | PA |
Arco/Atlantic Richfield | Philadelphia | PA |
Arco/SUNOCO | Philadelphia | PA |
ARCOS CORPORATION | PHILADELPHIA | PA |
ARCWIRE CORPORATION | MT CARMEL | PA |
Arden Verner Painting | Springdale | PA |
ARGO KNITTING MILLS | SCHUYLKILL HAVEN | PA |
ARGO MILLS | PHILADELPHIA | PA |
Argyl Manufacturing Co | Pen Argyl | PA |
ARGYL MANUFACTURING COMPANY PLANT | PEN ARGYL | PA |
ARGYL MFG CO | PEN ARGYL | PA |
ARGYL MFG CO – MIDWAY BETWEEN WINDGAP & PEN ARGYL | PEN ARGYL | PA |
ARGYL MFG CO – MIDWAY BETWEEN WINDGAP & PEN ARGYL – RFG 1 | PEN ARGYL | PA |
ARGYL MFG CO – PEN ARGYL | PEN ARGYL | PA |
Armco | Pittsburgh | PA |
ARMCO | BUTLER | PA |
ARMCO | MIDDLETOWN | PA |
ARMCO | AMBRIDGE | PA |
ARMCO | ARMBRIDGE | PA |
ARMCO ADVANCED MATERIALS CORPORATION | BUTLER | PA |
Armco Steel | Ambridge | PA |
Armco Steel | Sharon | PA |
Armco Steel | Butler | PA |
Armco Steel Corp | Butler | PA |
ARMCO STEEL CORP | AMBRIDGE | PA |
ARMCO STEEL CORP – BUTLER WORKS | BUTLER | PA |
Armco Steel Corp. | Butler | PA |
ARMCO STEEL CORP., BUTLER WORKS, MELT SHOP MASONRY, DOOR 1-R-6 | BUTLER | PA |
ARMCO STEEL CORPORATION | BUTLER | PA |
ARMCO STEEL CORPORATION | AMBRIDGE | PA |
ARMCO, INCORPORATED, SPECIALTY STEEL DIVISION | BUTLER | PA |
ARMOUR AND COMPANY | PHILADELPHIA | PA |
Armour Leather Co. | Kaulmont | PA |
ARMSTRONG – CORK MILL | LANCASTER | PA |
ARMSTRONG BROTHERS TOOL COMPANY | PITTSBURGH | PA |
ARMSTRONG CONT & SUPPLY | LANCASTER | PA |
ARMSTRONG CONT & SUPPLY | WASHINGTON | PA |
Armstrong Contracting & Supply | Lancaster | PA |
Armstrong Contracting & Supply | Harrisburg | PA |
Armstrong Contracting & Supply | Philadelphia | PA |
Armstrong Contracting & Supply | Pittsburgh | PA |
ARMSTRONG CONTRACTING & SUPPLY CORPORATION | LANCASTER | PA |
ARMSTRONG CONTRACTORS & SUPPLY | LANCASTER | PA |
Armstrong Cork | Beaver Falls | PA |
Armstrong Cork | Lancaster | PA |
Armstrong Cork (Armstrong World Industries) | Lancaster | PA |
ARMSTRONG CORK AND INSULATION COMPANY | OAKDALE | PA |
Armstrong Cork Co. (The) | Lancaster | PA |
Armstrong Cork Company | Lancaster | PA |
Armstrong Cork Company | Beaver Falls | PA |
ARMSTRONG CORK COMPANY | PITTSBURGH | PA |
ARMSTRONG CORK COMPANY | HARRISBURG | PA |
ARMSTRONG CORK COMPANY | PHILADELPHIA | PA |
Armstrong Cork Company – 27th Street Plant | Beaver Falls | PA |
ARMSTRONG CORK COMPANY – BUILDING 34-E | LANCASTER | PA |
ARMSTRONG CORK COMPANY – BUILDINGS 403-408 | LANCASTER | PA |
ARMSTRONG CORK COMPANY – DIGESTER & LIQUOR TANK | LANCASTER | PA |
ARMSTRONG CORK COMPANY – DILLER PLANK INCORPORATED | LANCASTER | PA |
ARMSTRONG CORK COMPANY – INSULATION DIVISION WAREHOUSE | PITTSBURGH | PA |
ARMSTRONG CORK COMPANY – LANCASTER FLOOR PLANT | LANCASTER | PA |
ARMSTRONG CORK COMPANY – PITT PLANT – 24TH STREET | PITTSBURGH | PA |
ARMSTRONG CORK COMPANY – RESEARCH & DEVELOPMENT CENTER | LANCASTER | PA |
ARMSTRONG CORK COMPANY – STORAGE & BLENDING TANK | LANCASTER | PA |
ARMSTRONG CORK COMPANY – TANKS & HOOD | PITTSBURGH | PA |
ARMSTRONG CORK COMPANY PLANT | LANCASTER | PA |
ARMSTRONG CORK COMPANY, BUILDING 34-E | LANCASTER | PA |
ARMSTRONG CORK COMPANY, BUILDINGS 403 TO 408 | LANCASTER | PA |
ARMSTRONG CORK COMPANY, DIGESTER & LIQUOR TANK | LANCASTER | PA |
ARMSTRONG CORK COMPANY, DILLER PLANK, INCORPORATED | LANCASTER | PA |
ARMSTRONG CORK COMPANY, LINOLEUM DIVISION | LANCASTER | PA |
ARMSTRONG CORK COMPANY, PITT PLANT, 24TH ST. | PITTSBURGH | PA |
ARMSTRONG CORK COMPANY, STORAGE & BLENDING TANK | LANCASTER | PA |
ARMSTRONG CORK COMPANY, TANKS & HOOD | PITTSBURGH | PA |
Armstrong Cork, R&D Center | Lancaster | PA |
ARMSTRONG COUNTY MEMORIAL HOSPITAL | KITTANNING | PA |
Armstrong Incorporated W.W. | Pittsburgh | PA |
Armstrong Power Station | Reesedale | PA |
ARMSTRONG POWER STATION | KITTANNING | PA |
Armstrong Sanitary Wipers | Pittsburgh | PA |
ARMSTRONG STATION | REESDALE | PA |
Armstrong World Industries | Lancaster | PA |
ARMSTRONG WORLD INDUSTRIES | NEW BRIGHTON | PA |
ARMY RESERVE CENTER | CLEARFIELD | PA |
ARNOMINK STEAM HEAT COMPANY | DREXEL HILL | PA |
ART LOOM CORPORATION | PHILADELPHIA | PA |
Arthur C. Mangels Ind. | Phoenixville | PA |
ASBESTOS AND MAGNESIA MANUFACTURING COMPANY | PORT KENNEDY | PA |
Asbestos Insulation Company | Norristown | PA |
ASBESTOS, SHINGLE, SLATE AND SHEATHING COMPANY | AMBLER | PA |
ASG INDUSTRIES | JEANNETTE | PA |
ASHLAND CHEMICAL COMPANY | PITTSBURGH | PA |
ASHLAND EMERY & CORUNDUM COMPANY | EASTON | PA |
ASHLAND OIL & REFINERY CO. -FREEDOM REFINERY | FREEDOM | PA |
Ashland Oil & Refining Company | Floreffe | PA |
ASHLAND OIL INC | FREEDOM | PA |
ASHLAND STATE HOSPITAL | ASHLAND | PA |
ASHLEY VILLAGE – NEW MINTZER AVENUE | NEW HOLLAND | PA |
ASPHALT PAVING & SUPPLY | NORRISTOWN | PA |
ASPHALT PAVING COMPANY | NORRISTOWN | PA |
Asphalt Products | Pittsburgh | PA |
Asten Hill | Philadelphia | PA |
Asten Hill Mfg. | Philadelphia | PA |
AT&T | Springfield | PA |
ATEC BLDG. | PITTSBURGH | PA |
ATHLETIC CLUB OF THE SCHUYLKILL NAVY | PHILADELPHIA | PA |
ATHOS STEEL MILL | PHILADELPHIA | PA |
ATLANTA BOILING SETTING | POWDER SPRINGS | PA |
Atlantic & Gulf Company | Philadelphia | PA |
ATLANTIC BAKING GROUP, INCORPORATED | PITTSBURGH | PA |
ATLANTIC CRUSHED COKE COMPANY | GREENSBURG | PA |
ATLANTIC FLOUR MILLS | PHILADELPHIA | PA |
ATLANTIC METALS CORPORATION | PHILADELPHIA | PA |
ATLANTIC OIL & HEAT | WHITE HALL | PA |
Atlantic Oil Refinery | Philadelphia | PA |
ATLANTIC PIPE LINE CO – FORT MIFFLIN TERMINAL | PHILADELPHIA | PA |
ATLANTIC PORT CONTRACTORS, INCORPORATED | PHILADELPHIA | PA |
Atlantic Refinery | Philadelphia | PA |
ATLANTIC REFINERY CO – RESEARCH & DEVELOPMENT DEPT. – LOCATION 23 | PHILADELPHIA | PA |
Atlantic Refining | Philadelphia | PA |
ATLANTIC REFINING CO | PHILADELPHIA | PA |
ATLANTIC REFINING CO – WHSE LOC NBR 1 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE – EAST SIDE | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE – EAST SIDE – TRACK #85 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE LOCATION 1 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE LOCATION 1 – HEADQUARTERS | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE LOCATION 1 – SCHUYLKILL & LANIER AVES | PHILADELPHIA | PA |
ATLANTIC REFINING CO – CENTRAL WAREHOUSE-EAST SIDE – B & O DELIVERY – TRACK 85 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – FOURTH FLOOR REAR | PHILADELPHIA | PA |
ATLANTIC REFINING CO – LOCATION 1 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – NORTH GATE – HARRY YUST | PHILADELPHIA | PA |
ATLANTIC REFINING CO – NORTH YARD | PHILADELPHIA | PA |
ATLANTIC REFINING CO – NORTH YARD ASPHALT PLANT | PHILADELPHIA | PA |
ATLANTIC REFINING CO – PHILADELPHIA REFINERY – NORTH YARD GATE TANK 1730 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – NORTH YARD | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – NORTH YARD – 34TH ST. GATE | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – NORTH YARD – WAX PLANT EXP. & HEAVY FUEL ADDN | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – SLABBING & PACKAGING AREA – WAX PLANT EXP. | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – WAX PLANT EXP. & HEAVY FUEL ADD. | PHILADELPHIA | PA |
ATLANTIC REFINING CO – POINT BREEZE REFINERY – WAX PLANT EXP. & HEAVY FUEL ADDN | PHILADELPHIA | PA |
ATLANTIC REFINING CO – RESEARCH & DEVELOPMENT CENTER | PHILADELPHIA | PA |
ATLANTIC REFINING CO – RESEARCH & DEVELOPMENT DEPT. – LOCATION 23 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – RT. BREEZE REFINERY | PHILADELPHIA | PA |
ATLANTIC REFINING CO – RT. BREEZE REFINERY – NORTH YARD – 34TH. ST. GATE | PHILADELPHIA | PA |
ATLANTIC REFINING CO – SCHUYLKILL AND LANIER | PHILADELPHIA | PA |
ATLANTIC REFINING CO – TANKS NBR 1264 & 1265 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – WAX PLANT EXP. & HEAVY FUEL ADDN – POINT BREEZE REFINERY, NORTH YARD | PHILADELPHIA | PA |
ATLANTIC REFINING CO – WAX PLANT EXP. & HEAVY FUEL ADDN – SOUTH YARD NEAR TANK #850 | PHILADELPHIA | PA |
ATLANTIC REFINING CO – WOLSTONS WOODS – N YD BARGE LDG LINE | PHILADELPHIA | PA |
ATLANTIC REFINING COMPANY | PHILADELPHIA | PA |
ATLANTIC REFINING COMPANY | CHESTER | PA |
ATLANTIC REFINING COMPANY | POINT BREEZE | PA |
ATLANTIC REFINING COMPANY | PITTSBURGH | PA |
ATLANTIC REFINING COMPANY, POINT BREEZE | PHILADELPHIA | PA |
ATLANTIC REFINING COMPANY/ARCO, PASSYUNK AVENUE AND SCHULYKILL RIVER | PHILADELPHIA | PA |
ATLANTIC RICHFIELD | PHILADELPHIA | PA |
ATLANTIC RICHFIELD – CENTRAL WAREHOUSE | PHILADELPHIA | PA |
ATLANTIC RICHFIELD – CENTRAL WAREHOUSE LOCATION 1 | PHILADELPHIA | PA |
ATLANTIC RICHFIELD – CENTRAL WAREHOUSE LOCATION 1 – SCHUYLKILL & LANIER | PHILADELPHIA | PA |
ATLANTIC RICHFIELD – LOCATION I | PHILADELPHIA | PA |
ATLANTIC RICHFIELD – WAREHOUSE LOCATION NBR 1 | PHILADELPHIA | PA |
ATLANTIC RICHFIELD CO. | PHILADELPHIA/POINT BREEZE | PA |
ATLANTIC RICHFIELD COMPANY | PHILADELPHIA | PA |
ATLANTIC RICHFIELD COMPANY – BARGE LOADING FACILITIES | PHILADELPHIA | PA |
ATLANTIC RICHFIELD COMPANY, BARGE LOADING FACILITIES | PHILADELPHIA | PA |
ATLANTIC RICHFIELD REFINERY | PHILADELPHIA | PA |
ATLANTIC RICHFIELD REFINERY – CRACKER UNIT 853 | PHILADELPHIA | PA |
ATLANTIC RICHFIELD REFINERY – CRACKING AREA | PHILADELPHIA | PA |
ATLAS CEMENT COMPANY | NORTHAMPTON | PA |
Atlas Chemicals Inc | Mertztown | PA |
ATLAS MINERAL MACHINE COMPANY | MENTZTOWN | PA |
Atlas Mineral Products Incorporated | Mertztown | PA |
ATLAS PORTLAND CEMENT COMPANY | NORTHAMPTON | PA |
ATLAS POWDER CO. | REYNOLDS | PA |
ATLAS POWDER COMPANY | REYNOLDS | PA |
Atochem North America | Philadelphia | PA |
Auburn Brick Company | Auburn | PA |
AUDENRIED #4 COLL | AUDENRIED | PA |
AUGUST WAGNER BREWERIES, INCORPORATED | PITTSBURGH | PA |
AURORA FURNACE | WRIGHTSVILLE | PA |
AUSCO | ST. JOSEPH | PA |
AUTO CAR CO | ARDMORE | PA |
Auto Car Co. | Ardmore | PA |
AUTO STEAM EQUIPMENT COMPANY | PHILADELPHIA | PA |
Autocar Trucks | Exton | PA |
AVCO SPENCER DIV. | WILLIAMSPORT | PA |
AVTEX FIBERS INC (a/k/a American Viscose) | MARCUS HOOK | PA |
B & O RAILROAD | CONNELLSVILLE | PA |
B F GOODRICH COMPANY | OAKS | PA |
B F GOODRICH TIRE COMPANY | OAKES | PA |
B N Saul Hardware Builders Supply | Appollo | PA |
B. & W. Main Tube Plant | Beaver Falls | PA |
B. & W. Main Tube Plant | Pittsburg | PA |
B. R. & P. Roundhouse | Puxsatawney | PA |
B.F. Goodrich | Oaks | PA |
B.F. GOODRICH COMPANY | OAKS | PA |
B.F. Refinery | Marcus Hook | PA |
B.P. OIL COMPANY | PHILADELPHIA | PA |
B.P. OIL COMPANY | CHESTER | PA |
B.P. OIL CORPORATION, ALKY FEED SYSTEM, TRAINER | PHILADELPHIA | PA |
B.P. OIL CORPORATION, MARCUS HOOK REFINERY | MARCUS HOOK | PA |
B.V.H. HOTEL ASSOCIATES | PHILADELPHIA | PA |
Babcock & Wilcox | West Mayfield | PA |
Babcock & Wilcox | Beaver Falls | PA |
Babcock & Wilcox | Laurence County | PA |
Babcock & Wilcox | Philadelphia | PA |
Babcock & Wilcox | Masontown | PA |
Babcock & Wilcox | Pittsburgh | PA |
Babcock & Wilcox | Ambridge | PA |
Babcock & Wilcox | Koppel | PA |
Babcock & Wilcox | Wallace Run | PA |
BABCOCK & WILCOX | HOMER CITY | PA |
BABCOCK & WILCOX | MIDDLETOWN | PA |
Babcock & Wilcox Co | Ellwood City | PA |
Babcock & Wilcox Co, Main Tube Plant | West Mayfield | PA |
Babcock & Wilcox Company | Wallace Run Plant | PA |
Babcock & Wilcox Company | Beaver | PA |
Babcock & Wilcox Company | Ambridge | PA |
Babcock & Wilcox Company | Beaver Falls | PA |
Babcock & Wilcox Company | Koppel | PA |
BABCOCK & WILCOX COMPANY, TUBULAR PRODUCTS DIVISION | AMBRIDGE | PA |
BABCOCK & WILCOX COMPANY, TUBULAR PRODUCTS DIVISION | KOPPEL | PA |
BABCOCK & WILCOX COMPANY, TUBULAR PRODUCTS DIVISION | BEAVER FALLS | PA |
BABCOCK & WILCOX COMPANY, TUBULAR PRODUCTS DIVISION, KOPPEL WORKS | KOPPEL | PA |
BABCOCK & WILCOX EAST WORKS | BEAVER FALLS | PA |
BABCOCK & WILCOX KOPPEL PLANT | KOPPEL | PA |
Babcock & Wilcox Koppel Works | Beaver Falls | PA |
Babcock & Wilcox Main Plant | BEAVER FALLS | PA |
Babcock & Wilcox Steel Mills | Beaver Falls | PA |
BABCOCK & WILCOX TUBE COMPANY | BEAVER FALLS | PA |
Babcock & Wilcox Wallace Run Plant | BEAVER | PA |
Babcock & Wilcox, Tubular Products Division | Koppel | PA |
Backos & Johns Lumberyard | Pitcairn | PA |
Badenhauser | Cornwell Heights | PA |
BADGER CORP BENZOIL PLANT 8 | CLAIRTON | PA |
BADGER US STEEL CHEM PLT | NEVILLE ISLAND | PA |
BADWELL CO. | HARRISBURG | PA |
BAEDER ADAMSON & COMPANY | PHILADELPHIA | PA |
BAILEY BANKS & BIDDLE BUILDING | PHILADELPHIA | PA |
BAILEY HIGH SCHOOL | PITTSBURGH | PA |
Baird Insulation Company | Chambersburg | PA |
BAKER CARVER & MORREL | PHILADELPHIA | PA |
BAKER CHAIN AND WAGON IRON MANUFACTURING COMPANY | WEST RUN ALLEGHENY | PA |
BAKER CHAIN AND WAGON IRON MANUFACTURING COMPANY | ALLEGHENY | PA |
BAKER CO J. E. | YORK | PA |
BAKER ELEM. SCHOOL | ALTOONA | PA |
BAKER, SMITH & COMPANY | PITTSBURGH | PA |
BALA CYNWYD JR HIGH SCHOOL | BALA CYNWYD | PA |
Balch Flavor Company, Inc. | Pittsburgh | PA |
Baldt Anchor Company | Chester | PA |
BALDT ANCHOR FORGE CO | CHESTER | PA |
BALDT ANCHOR, CHAIN & FORGE COMPANY | CHESTER | PA |
BALDWIN AUTOMOTIVE | ESSINGTON | PA |
Baldwin Lima Hamilton | Chester | PA |
Baldwin Locomotive | Philadelphia | PA |
Baldwin Locomotive Works | Eddystone | PA |
BALDWIN LOCOMOTIVE WORKS | PHILADELPHIA | PA |
BALDWIN LOCOMOTIVE WORKS | BURNHAM | PA |
Baldwin-Ehert-Hill Inc | Port Kennedy | PA |
Baldwin-Ehert-Hill Inc | Valley Forge | PA |
BALDWIN-LIMA-HAMILTON CORP, STANDARD STEEL WORKS DIV., STEAM PLANT #7 | BURNHAM | PA |
BALDWIN-LIMA-HAMILTON CORP. (a/k/a Baldwin Locomotive Works) | EDDYSTONE | PA |
BALDWIN-LIMA-HAMILTON CORPORATION | EDDYSTONE | PA |
BALL ENGINE COMPANY | ERIE | PA |
BALLIED CHEMICAL & DYE CORP. – ARRETT DIVISION | PHILADELPHIA | PA |
BALTIMORE & OHIO RAILROAD CO – DIVISION SK – SECTION A | NEW CASTLE | PA |
BALTIMORE & OHIO RAILROAD CO – DIVISION SK – SECTION C | DUBOIS | PA |
BALTIMORE & OHIO RAILROAD CO – DIVISION SK – SECTION C, LOCO SHOPS | DUBOIS | PA |
BALTIMORE & OHIO RAILROAD CO – SK – SECTION A | NEW CASTLE | PA |
BALTIMORE & OHIO RAILROAD CO. | NEW CASTLE | PA |
BALTIMORE AND OHIO RAILROAD COMPANY | CONNELLSVILLE | PA |
BALTIMORE AND OHIO RAILROAD COMPANY | PHILADELPHIA | PA |
BALTIMORE AND OHIO RAILROAD COMPANY | PITTSBURGH | PA |
BALTIMORE AND OHIO RAILROAD COMPANY | GLENWOOD | PA |
BALTIMORE AND OHIO RAILROAD COMPANY | NEW CASTLE JUNCTION | PA |
BANGOR ELECTRIC LIGHT, HEAT AND POWER COMPANY – POWER PLANT | BANGOR | PA |
BANK OF NORTH AMERICA | PHILADELPHIA | PA |
BANKS MORTON | PITTSBURGH | PA |
BARBER ASPHALT PAVING COMPANY | PHILADELPHIA | PA |
BARD INSULATION CO – REAR 147 2ND FLR | CHAMBERSBURG | PA |
Bargain City | Philadelphia | PA |
BARKLEY APARTMENTS – CITY LINE AVENUE | PHILADELPHIA | PA |
BARNES & TUCKER | CARROLLTON | PA |
BARNES & TUCKER COAL | CARROLLTOWN | PA |
BARNUM BREAKER | PITTSTON | PA |
BARNUM COLLIERY | PITTSTON | PA |
BARONE LAUNCH SERVICE | PHILADELPHIA | PA |
Barrett Chemical | Philadelphia | PA |
Barrett Chemical Company | Philadelphia | PA |
BARRETT COMPANY | PHILADELPHIA | PA |
BARRETT COMPANY | BETHLEHEM | PA |
BARRETT COMPANY | FRANKFORD | PA |
BARRETT DIVISION ALLIED CHEMICAL AND DYE CORPORATION | FRANKFORD | PA |
BARRETT DIVISION ALLIED CHEMICAL AND DYE CORPORATION | PHILADELPHIA | PA |
BARRETT MANUFACTURING COMPANY | FRANKFORD | PA |
BARRETTS ROOFING | PHILADELPHIA | PA |
BARRONES LAUNCH SERV INC | PHILADELPHIA | PA |
Barry’s Home Improvements | Cherry Tree | PA |
BART COLERAIN ELEM SCHOOL | BARTVILLE | PA |
BARTELS BREWING COMPANY | KINGSTON | PA |
BASIC CONSTRUCTION COMPANY, 17TH AND MARKET STS. | PHILADELPHIA | PA |
BATH PORTLAND CEMENT COMPANY | BATH | PA |
BATH PORTLAND CEMENT COMPANY | SANDTS EDDY | PA |
BATH PORTLAND CEMENT COMPANY | SANDS EDDY | PA |
Baugh Chemical | Philadelphia | PA |
BAYAMON | CHESTER | PA |
BAYLESS PULP & PAPER CORP | AUSTIN | PA |
BEACON LIGHT COMPANY – CHESTER STATION POWER PLANT | CHESTER | PA |
Bear Gap Water Company | Shamokin | PA |
BEAR GAP WATER COMPANY – PUMPING STATION | SHAMOKIN | PA |
BEAR VALLEY #1 BOILER HOUSE | WILLIAMSTOWN | PA |
BEAR VALLEY SHAFT | WILLIAMSTOWN | PA |
BEAUMONT BIRCH COMPANY | PHILADELPHIA | PA |
Beaunit Fibers | Elizabethon | PA |
BEAVER COAL AND COKE COMPANY | WAMPUM | PA |
BEAVER COUNTY GERIATRIC CENTER | BEAVER | PA |
BEAVER COUNTY HOME AND HOSPITAL | BEAVER | PA |
BEAVER COUNTY LIGHT COMPANY – FALLSTON POWER HOUSE | FALLSTON | PA |
BEAVER FALLS MEDICAL CENTER | BEAVER FALLS | PA |
BEAVER HILL APARTMENTS | JENKINTOWN | PA |
BEAVER MEADOW COLLIERY | BEAVER MEADOW | PA |
BEAVER MEADOW COLLIERY | DRIFTON | PA |
BEAVER VALLEY GENERAL HOSPITAL | NEW BRIGHTON | PA |
BEAVER VALLEY MALL | MONACA | PA |
Beaver Valley Power Station Unit | Shippingport | PA |
BEAVER VALLEY TRACTION COMPANY | ECONOMY | PA |
BEAVER VALLEY TRACTION COMPANY | BEAVER | PA |
BEAVER VALLEY TRACTION COMPANY | BEAVER FALLS | PA |
BEAVER WIRE COMPANY | BEAVER FALLS | PA |
Bechtel Steel Plant | Martins Creek | PA |
BECKS RUN PUMPING STATION | PITTSBURGH | PA |
Beckwith Mach | Harrisburg | PA |
BECKWITH MACHINERY | MURRAYSVILLE | PA |
BEEBER JUNIOR HJIGH SCHOOL – 59TH & MALVERN STREETS | PHILADELPHIA | PA |
BEECHWOOD INN | JENKINTOWN | PA |
BELFONTE WORKS – BLDG N | BELLEFONTE | PA |
BELL TELEPHONE BUILDING – SEVENTH AVENUE | PITTSBURGH | PA |
BELL TELEPHONE BUILDING – SOUTH MAIN STREET | WILKES-BARRE | PA |
Bell Telephone Co. | Pittsburgh | PA |
Bell Telephone Co. | Sharpsburg | PA |
BELLEFIELD BOILER PLANT | PITTSBURGH | PA |
BELLEFIELD HOTEL | PITTSBURGH | PA |
BELLEFONTE ELECTRIC COMPANY – POWER PLANT | BELLEFONTE | PA |
BELLEFONTE GAS COMPANY – STEAM PLANT | BELLEFONTE | PA |
BELLEVUE STRATFORD HOTEL COMPANY | PHILADELPHIA | PA |
BELMONT OIL WORKS / BELMONT PETROLEUM REFINERY | PHILADELPHIA | PA |
BELMONT REFINERY | POINT BREEZE | PA |
BEMENT, MILES & COMPANY | PHILADELPHIA | PA |
Ben Franklin Elementary School | Levittown | PA |
Ben Franklin Hotel | Philadelphia | PA |
Bendix Aircraft | Philadelphia | PA |
Bendix Corporation | Wilkes Barre | PA |
BENDIX WESTINGHOUSE COMPANY | WILMERDING | PA |
BENJAMIN FOSTER CO | PHILADELPHIA | PA |
BENJAMIN FOSTER COMPANY | PHILADELPHIA | PA |
BENJAMIN FRANKLIN ELEMENTARY SCHOOL | PHILADELPHIA | PA |
BENJAMIN FRANKLIN JUNIOR HIGH SCHOOL | NEW CASTLE | PA |
BENJAMIN RUSH MIDDLE SCHOOL – KNIGHTS ROAD | PHILADELPHIA | PA |
BENNETT | PENNSYLVANIA | |
Bennett & Aspen | Philadelphia | PA |
BENNETT STEEL, INCORPORATED | WILKES BARRE | PA |
BENSALEM HIGH SCHOOL | BENSALEM | PA |
BENZOL PRODUCTS COMPANY | MARCUS HOOK | PA |
BERGNER AND ENGLE BREWING COMPANY | PHILADELPHIA | PA |
Berillium Corporation | Temple | PA |
BERKS COUNTY ASSOCIATION FOR THE BLIND – HAMPDEN BOULEVARD | READING | PA |
BERKS REFINING COMPANY | POTTSTOWN | PA |
BERKS VOCATIONAL SCHOOL | BERKS COUNTY | PA |
BERS & COMPANY | PHILADELPHIA | PA |
BERS AND CO INC | PHILADELPHIA | PA |
BERS CORPORATION | PHILADELPHIA | PA |
Berwick Forge & Fabricating | Berwick | PA |
BERWIN WHITE COAL COMPANY | WINDBER | PA |
BERWIND WHITE COAL MINING COMPANY | PHILADELPHIA | PA |
BERWIND WHITE COAL MINING COMPANY | WINDBER | PA |
BERWIND WHITE COAL MINING COMPANY | SCALP LEVEL | PA |
BERWIND WHITE COAL MINING COMPANY | HORATIO | PA |
BERWIND WHITE COAL MINING COMPANY | LINDSEY | PA |
BERWIND WHITE COAL MINING COMPANY | DUBOIS | PA |
BERWIND WHITE COAL MINING COMPANY | DUNLO | PA |
BERWIND WHITE COAL MINING COMPANY | EUREKA | PA |
BERWIND WHITE COAL MINING COMPANY | OSCEOLA | PA |
BERYLLIUM CORP. | HAZELTON | PA |
BERYLLIUM CORP. | READING | PA |
BERYLLIUM CORPORATION | READING | PA |
BERYLLIUM CORPORATION | TEMPLE | PA |
BERYLLIUM CORPORATION | HAZLETON | PA |
BERYLLIUM CORPORATION – MANUFACTURING PLANT | TEMPLE | PA |
BESSEMER AND LAKE ERIE RAILROAD COMPANY | GREENVILLE | PA |
BESSEMER COKE COMPANY | PITTSBURGH | PA |
BESSEMER LIMESTONE COMPANY | WALFORD | PA |
BESSEMER STEEL WORKS | JOHNSTOWN | PA |
BETH SHALOM SYNAGOGUE | PITTSBURGH | PA |
BETHAYRES COMPANY | BETHAYRES | PA |
BETHEHEM STEEL CORPORATION | JOHNSTOWN | PA |
Bethel Park Borough ? Sewage Treatment Plant | Bethel Park | PA |
BETHEL SENIOR HIGH SCHOOL | PITTSBURGH | PA |
Bethelhem Steel Corp – Steel Mill | Ellsworth | PA |
BETHLEHEM CORNWALL | CORNWALL | PA |
BETHLEHEM CORNWELL CORP. – LEBANON CONCENTRATOR PLANT | LEBANON | PA |
Bethlehem Corporation | Easton | PA |
BETHLEHEM FAIRFIELD SHIPYARD, INCORPORATED | BETHLEHEM | PA |
Bethlehem Foundry & Machine | Bethlehem | PA |
BETHLEHEM IRON WORKS | BETHLEHEM | PA |
BETHLEHEM JR. SR. HIGH SCHOOL | DEEMSTON BORO | PA |
Bethlehem Mine & Plant | Cornwall | PA |
Bethlehem Mine & Plant | Morgantown | PA |
BETHLEHEM MINES CORPORATION | EBENSBURG | PA |
BETHLEHEM MINES CORPORATION | EDENSBURG | PA |
Bethlehem Mines Corporation – Hanover Quarry | Hanover | PA |
BETHLEHEM SILK COMPANY | BETHLEHEM | PA |
Bethlehem Steel | Bethlehem | PA |
Bethlehem Steel | Johnstown | PA |
Bethlehem Steel | Ambridge | PA |
Bethlehem Steel | Steelton | PA |
Bethlehem Steel | Lebanon | PA |
Bethlehem Steel | Allentown | PA |
BETHLEHEM STEEL | HELLERTOWN | PA |
BETHLEHEM STEEL | HELLERSTOWN | PA |
BETHLEHEM STEEL | EBDENBURG | PA |
BETHLEHEM STEEL | LEETSDALE | PA |
BETHLEHEM STEEL – BETHLEHEM WORKS | BETHLEHEM | PA |
BETHLEHEM STEEL – JOHNSTOWN WORKS | JOHNSTOWN | PA |
BETHLEHEM STEEL – MARTIN TOWER | BETHLEHEM | PA |
Bethlehem Steel – No. 2 Turbo, Generator | Johnstown | PA |
BETHLEHEM STEEL – STEELTON PLANT | STEELTON | PA |
BETHLEHEM STEEL BUILDING, EATON AND EIGHTH AVENUE | BETHLEHEM | PA |
BETHLEHEM STEEL CO | ALLENTOWN | PA |
BETHLEHEM STEEL CO | JOHNSTOWN | PA |
BETHLEHEM STEEL CO | STEELTON | PA |
BETHLEHEM STEEL CO | BETHLEHEM | PA |
BETHLEHEM STEEL CO – #4 SHOP WAREHOUSE – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – #4 SHOP WAREHOUSE DEPT. | BETHLEHEM | PA |
BETHLEHEM STEEL CO – #4 SHOP WAREHOUSE DEPT. – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – #4 SHOP/DEPT. – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – BENSOL PLANT – COKE OVEN DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – BOILER HOUSE #2 | BETHLEHEM | PA |
BETHLEHEM STEEL CO – CENTRAL BOILERS DEPT | STEELTON | PA |
BETHLEHEM STEEL CO – CENTRAL BOILERS DEPT – WEST END YARD | STEELTON | PA |
BETHLEHEM STEEL CO – COKE OVEN DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – JOHNSTOWN STEEL MILL | JOHNSTOWN | PA |
BETHLEHEM STEEL CO – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – LEHIGH PIPE SHOP | BETHLEHEM | PA |
BETHLEHEM STEEL CO – NBR 1 SHOP WAREHOUSE – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – NBR 4 SHOP WAREHOUSE | BETHLEHEM | PA |
BETHLEHEM STEEL CO – NBR 4 SHOP WAREHOUSE – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – NBR 4 SHOP WAREHOUSE – SERVICE DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – PIPE SHOP – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – PIPE SHOP DEPARTMENT – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – PIPE SHOP DEPARTMENT – SAUCON DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL CO – TRUCK STOP 242 | JOHNSTOWN | PA |
BETHLEHEM STEEL CO – WEST END YARDS – SUPPLY DEPARTMENT | STEELTON | PA |
BETHLEHEM STEEL CO – WHL PLT BRICK STORAGE – STOP 242 | JOHNSTOWN | PA |
BETHLEHEM STEEL CO -BETHLEHEM STEEL PLANT | BETHLEHEM | PA |
Bethlehem Steel Co. | Bethlehem | PA |
Bethlehem Steel Co. | Steelton | PA |
Bethlehem Steel Co. | Johnstown | PA |
Bethlehem Steel Co. | Hanover | PA |
Bethlehem Steel Company | Bethlehem | PA |
Bethlehem Steel Company | Steelton | PA |
BETHLEHEM STEEL COMPANY | JOHNSTOWN | PA |
BETHLEHEM STEEL COMPANY | EDENSBURG | PA |
BETHLEHEM STEEL COMPANY | EBENSBURG | PA |
BETHLEHEM STEEL COMPANY | LEBANON | PA |
BETHLEHEM STEEL COMPANY – SAUCON PLANT | BETHLEHEM | PA |
BETHLEHEM STEEL COMPANY – SAUCON PLANT – BOOSTER BOILER HOUSE | BETHLEHEM | PA |
Bethlehem Steel Corp | Lebanon | PA |
Bethlehem Steel Corp | Steelton | PA |
Bethlehem Steel Corp | Bethlehem | PA |
Bethlehem Steel Corp | Johnstown | PA |
BETHLEHEM STEEL CORP | EBENSBURG | PA |
BETHLEHEM STEEL CORP | LEETSDALE | PA |
BETHLEHEM STEEL CORP | LEETDALE | PA |
BETHLEHEM STEEL CORP. | BETHLEHEM | PA |
BETHLEHEM STEEL CORP. | JOHNSTOWN | PA |
BETHLEHEM STEEL CORP. | STEELTON | PA |
Bethlehem Steel Corporation | Bethlehem | PA |
Bethlehem Steel Corporation | Cornwall | PA |
Bethlehem Steel Corporation | Indianatown Gap | PA |
Bethlehem Steel Corporation | Joanna | PA |
Bethlehem Steel Corporation | Steelton | PA |
Bethlehem Steel Corporation | Johnstown | PA |
Bethlehem Steel Corporation | Leetsdale | PA |
BETHLEHEM STEEL CORPORATION | EASTON | PA |
BETHLEHEM STEEL CORPORATION | SOUTH BETHELHEM | PA |
BETHLEHEM STEEL CORPORATION | LEBANON | PA |
BETHLEHEM STEEL CORPORATION | REDINGTON | PA |
BETHLEHEM STEEL CORPORATION | SOUTH BETHLEHEM | PA |
BETHLEHEM STEEL CORPORATION | DUNAGHMORE | PA |
BETHLEHEM STEEL CORPORATION | FRANKLIN | PA |
BETHLEHEM STEEL CORPORATION | HOMESTEAD | PA |
BETHLEHEM STEEL CORPORATION | NEVILLE ISLAND | PA |
Bethlehem Steel Corporation – Homer Research Labs | Bethlehem | PA |
BETHLEHEM STEEL CORPORATION – LEHIGH DIVISION – Bethlehem Plant | BETHLEHEM | PA |
Bethlehem Steel Corporation – Mines | Johnstown | PA |
BETHLEHEM STEEL CORPORATION – NEW FLANGE & STRUCTURAL MILL | BETHLEHEM | PA |
Bethlehem Steel Corporation – Steel Mill | Johnstown | PA |
BETHLEHEM STEEL CORPORATION – STEEL MILL | Bethlehem | PA |
BETHLEHEM STEEL CORPORATION, BETHLEHEM LUKENS PLATE PRODUCTS | COATESVILLE | PA |
BETHLEHEM STEEL CORPORATION, FRANKLIN WORKS | JOHNSTOWN | PA |
BETHLEHEM STEEL CORPORATION, NEW FLANGE & STRUCTURAL MILL | BETHLEHEM | PA |
BETHLEHEM STEEL CORPORATION, PLANT, INGOT MOLD FOUNDRY | BETHLEHEM | PA |
BETHLEHEM STEEL CORPORATION, SCHRAPNEL DEPARTMENT. NUMBER 3 | REDINGTON | PA |
Bethlehem Steel Mill | Pittsburgh | PA |
BETHLEHEM STEEL PLANT – INGOT MOLD FOUNDRY | BETHLEHEM | PA |
Bethlehem Steel Research Center | Bethlehem | PA |
BETHLEHEM STEEL SUBSIDIARY COS. – #4 SHOP WAREHOUSE – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL SUBSIDIARY COS. – PIPE SHOP – LEHIGH DIVISION | BETHLEHEM | PA |
BETHLEHEM STEEL SUBSIDIARY COS. – TRACK 514 TRUCK STOP 173 MECH. | JOHNSTOWN | PA |
BETTIS ATOMIC POWER LABORATORY | WEST MIFFLIN | PA |
Betty Brackly, Lynsk | Philadelphia | PA |
BETZ LABS | TREVOSE | PA |
BEYER WILLIAM AND KATHLEEN | DREXEL HILL | PA |
BF GOODRICH COMPANY | OAKS | PA |
BICKING PAPER MILLS | DOWNINGTON | PA |
BICKING PAPER MILLS | DOWNINGTOWN | PA |
BICKLEY FURNACES INC | PHILADELPHIA | PA |
BICKLEY FURNACES, INCORPORATED | PHILADELPHIA | PA |
BICKLEY FURNANCES INC | PHILADELPHIA | PA |
BIG RUN MILLING COMPANY | BIG RUN, JEFFERSON COUNTY | PA |
BILC SUPER MARKET | PHILADELPHIA | PA |
BINDER COOPERAGE | PHILADELPHIA | PA |
BINDLEY HARDWARE COMPANY | PITTSBURGH | PA |
BINGHAM HOUSE | PHILADELPHIA | PA |
BINNEY & SMITH, INC (a/k/a Kepler Mills) | EASTON | PA |
BIRD COAL COMPANY | TIRE HILL | PA |
BIRD COLEMAN FURNACES | CORNWALL | PA |
BIRDSBORO CORPORATION | BIRDSBORO | PA |
BIRMINGHAM SCHOOL | BIRMINGHAM | PA |
Bishop Tube Company | Frazer | PA |
BISSELL AND COMPANY | PITTSBURGH | PA |
BLACK AND GERMER | ERIE | PA |
Black Burn Russell Co | Bedford | PA |
BLACK LIQUOR OXIDATION SYSTEM | SPRING GROVE | PA |
BLACK RIVER | CHESTER | PA |
BLACKWOOD COLLIERY | BLACKWOOD | PA |
BLACKWOOD COLLIERY | ORWIGSBURG | PA |
BLAKELY BOROUGH MUNICIPAL ELECTRIC PLANT | BLAKELY | PA |
BLATTS CHEMICAL LABORATORY | FEASTERVILLE | PA |
Blaw Knox Company | Pittsburgh | PA |
Blaw-Know Company | Pittsburgh | PA |
BLAW-KNOX | BUTLER | PA |
BLAW-KNOX | PITTSBURGH | PA |
BLAW-KNOX CO | PITTSBURGH | PA |
Blaw-Knox Company | Blawnox | PA |
Blaw-Knox Company | Ellwood City | PA |
BLAW-KNOX COMPANY | CORAOPOLIS | PA |
BLAW-KNOX COMPANY | PITTSBURGH | PA |
BLAW-KNOX COMPANY | BLAWKNOX | PA |
BLAW-KNOX COMPANY | BLAW KNOX | PA |
Blawnox Mill | Blawnox | PA |
BLIND FLORAL CO | PITTSBURGH | PA |
BLISS SILK THROWING COMPANY – JESSUP PLANT | DICKSON CITY | PA |
BLOOMING MILL | JOHNSTOWN | PA |
BLOOMSBURG AREA HIGH SCHOOL – RAILROAD AVENUE | BLOOMSBURG | PA |
BLOOMSBURG HEATING COMPANY | BLOOMSBURG | PA |
BLOSSBURG COAL MINING & RAILROAD COMPANY | ARNOT | PA |
BLOSSOM PRODUCTS CORPORATION | ALLENTOWN | PA |
BLUE FLAME BURNERS INC | PITTSBURGH | PA |
BLUE RIDGE TRACTION COMPANY | DANIELSVILLE | PA |
BLUE RIDGE WINKLER TEXTILE CO | BANGOR | PA |
BLUMENTHAL BROS CHOC COMPANY | PHILADELPHIA | PA |
BLUMENTHAL BROTHERS | PHILADELPHIA | PA |
BLUMENTHAL BROTHERS CHOCO | PHILADELPHIA | PA |
BOARD OF EDUCATION BUILDINGS | PHILADELPHIA | PA |
BODWELL CO | HARRISBURG | PA |
Bodwell Company | Harrisburg | PA |
Boehm Mfg Co | Conshohocken | PA |
BOEING COMPANY | MORTON | PA |
BOEING COMPANY | RIDLEY PARK | PA |
BOEING COMPANY | EDDYSTONE | PA |
Boeing Vertol | Eddystone | PA |
Boeing Vertol | Ridley Park | PA |
Boeing Vertol | Morton | PA |
BOEING VERTOL | RIDLEY TOWNSHIP | PA |
BOEING VERTOL COMPANY | PHILADELPHIA | PA |
BOEING VERTOL PLANT | EDDYSTONE | PA |
BOERICKE AND TAFEL BUILDING | PHILADELPHIA | PA |
BOGER & CRAWFORD | PHILADELPHIA | PA |
BOGGS & BUHL | ALLEGHENY | PA |
BOGGS & BUHL, WEST DIAMOND ST. AND ALLEY SEMPLE MEP. CANTILE BUILDING | ALLEGHENY CITY | PA |
Boiler Engineer & Supply Co. | Phoenixville | PA |
BOILER ERECTION & REPAIR | AMBLER | PA |
Boiler Service, Inc. | Spring House | PA |
BOK TECHNICAL HIGH SCHOOL – 8TH & MIFFLIN STREETS | PHILADELPHIA | PA |
BOLLINGER BROTHERS | PITTSBURGH | PA |
BON SECOURS HOLY FAMILY HOSPITAL | ALTOONA | PA |
Bonair Foundry Company | Philadelphia | PA |
Bonded Products | West Chester | PA |
BONNEY FORGE & TOOL WORKS | ALLENTOWN | PA |
Bonney FRG Division | Allentown | PA |
BORG WARNER CORPORATION | YORK | PA |
BORNET CLEANERS | PHILADELPHIA | PA |
BORNOT, INCORPORATED | PHILADELPHIA | PA |
Borough of Blawnox | Blawnox | PA |
Borough of Grove City ? Sewage Treatment Plant | Grove City | PA |
BOROUGH OF PHOENIXVILLE | PHOENIXVILLE | PA |
BOROUGH OF QUAKERTOWN | QUAKERTOWN | PA |
BOROUGH OF SCHUYLKILL HAVEN | SCHUYKILL HAVEN | PA |
BOROUGH OF TARENTUM | TARENTUM | PA |
BORZILLO BAKERY | NORRISTOWN | PA |
BORZILLO BAKERY INC | MORRISTOWN | PA |
BOSTON & OHIO RAILROAD COMPANY | NEW CASTLE | PA |
BOSTON & OHIO RAILROAD COMPANY | PITTSBURGH | PA |
BOSTON & OHIO RAILROAD COMPANY | PHILADELPHIA | PA |
BOSTON & OHIO RAILROAD COMPANY | GLENWOOD | PA |
BOSTON & OHIO RAILROAD COMPANY | CONNELLSVILLE | PA |
BOSTON IRON AND STEEL COMPANY | MCKEESPORT | PA |
Botany 500 | Philadelphia | PA |
BOTFIELD REFRACTORIES COMPANY, 776 S. SWANSON ST. | PHILADELPHIA | PA |
BOTFIELD REFRACTORIES COMPANY, DIVISION O | PHILADELPHIA | PA |
BOVAIRD & SEYFANG MFG CO – PLANT #1 | BRADFORD | PA |
Bovaird Company | Bradford | PA |
Bowman Trucking | Indiana | PA |
BOYERTOWN BURIAL CASKET COMPANY | BOYERTOWN | PA |
BOYERTOWN BURIEL CASKET | BOYERTOWN | PA |
BP Oil | Marcus Hook | PA |
BP OIL | PHILADELPHIA | PA |
BP OIL | TRAINER | PA |
BP OIL – SINCLAIR REFINERY | TRAINER | PA |
Bp Oil Corporation | Marcus Hook | PA |
BP OIL CORPORATION – ALKY FEED SYSTEM – TRAINER | PHILADELPHIA | PA |
BP OIL CORPORATION – MARCUS HOOK REFINERY | MARCUS HOOK | PA |
Bp Refinery | Chester | PA |
BRACE COMPRESSOR STATION | BRACE | PA |
BRACKENRIDGE WORKS SOAKING PIT | BRACKENRIDGE | PA |
BRADDOCK GENERAL HOSPITAL | BRADDOCK | PA |
BRADDOCK HOSPITAL – WAREHOUSE | PITTSBURGH | PA |
BRADDOCK WIRE COMPANY | RANKIN | PA |
BRADDOCK WIRE COMPANY | PITTSBURGH | PA |
BRADFORD OIL REFINING | BRADFORD | PA |
Bradford Supply Co. | Bradford | PA |
Bradford Supply Company | Bradford | PA |
Bradford Supply Company | Lawton Lease | PA |
BRADLEE & COMPANY | PHILADELPHIA | PA |
BRADSHAW AND COMPANY | PITTSBURGH | PA |
BRAEBURN ALLOY | BRAEBURN | PA |
BRAEBURN ALLOY | LOWER BURRELL | PA |
BRAEBURN ALLOY STEEL COMPANY | BRAEBURN | PA |
BRAEBURN ALLOY STEEL CORPORATION | BRAEBURN | PA |
BRAEBURN STEEL COMPANY | BRAEBURN | PA |
Brand Insulation | Philadelphia | PA |
BRANDLEY SMITH | PHILADELPHIA | PA |
BRANDYWINE MUSHROOM CO | WEST CHESTER | PA |
BREADING PAPERBOARD CORPORATION | SINKING SPRING | PA |
BREAKER BOILER HOUSE | GLEN LYON | PA |
BREGY ELEMENTARY SCHOOL – 17TH & BILGER STREETS | PHILADELPHIA | PA |
BREMAN’S EXPRESS PITTSBURGH TERMINAL | PITTSBURGH | PA |
BRENTWOOD HIGH SCHOOL – BROWNSVILLE ROAD | PITTSBURGH | PA |
Bressler Metal Works | Lebanon | PA |
BRICMONT & ASSOCIATES | MCMURRAY | PA |
BRIDGE SHOP | PENCOYD | PA |
BRIDGEWATER PAPER COMPANY | BRIDGEWATER | PA |
BRIER HILL COKE COMPANY | UNIONTOWN | PA |
BRIER HILL COKE COMPANY | BRIER HILL | PA |
Brinton Brothers | New Cumberland | PA |
BRISTOL STEEL TREATING CO | BRISTOL | PA |
BRISTOL WATER WORKS | BRISTOL | PA |
BRITISH PETROLEUM COMPANY | MARCUS HOOK | PA |
BRITISH PETROLEUM COMPANY | TRAINER | PA |
British Petroleum Oil – Sinclair Refinery | Trainer | PA |
British Petroleum Refinery | Marcus Hook | PA |
British Petroleum Refinery | Trainer | PA |
Broad Meadows Farm Delaware County Prison | Delaware County | PA |
Brockway Glass | Clarion | PA |
Brockway Glass | Brockway | PA |
Brockway Glass Co | Brockway | PA |
BROCKWAY GLASS CO., INC. | WASHINGTON | PA |
Brockway Glass Company | Brockway | PA |
BROCKWAY GLASS COMPANY, INCORPORATED | WASHINGTON | PA |
BROCKWAY GLASS COMPANY, INCORPORATED | BROCKWAY | PA |
BROMLEY LACE MILL | PHILADELPHIA | PA |
BROOKS BROTHERS | PHILADELPHIA | PA |
BROOKWOOD COAL COMPANY | FRACKVILLE | PA |
BROOKWOOD COLLIERY | FRACKVILLE | PA |
BROTHERS VALLEY COAL COMPANY | BROTHERS VALLEY TOWNSHIP | PA |
BROUDY PRECISION EQUIPMENT | PHILADELPHIA | PA |
BROWN AND COMPANY, INCORPORATED | PITTSBURGH | PA |
BROWN BROTHERS & COMPANY | PHILADELPHIA | PA |
BROWN INSTRUMENT COMPANY | PHILADELPHIA | PA |
BROWNING, KING & COMPANY BUILDING | PHILADELPHIA | PA |
BROWNSVILLE GOLDEN AGE NU | BROWNSVILLE | PA |
Bruce Industrial Controls | Horsham | PA |
BRUCE MANSFIELD POWER | SHIPPINGPORT | PA |
BRUCE MANSFIELD POWER PLANT | Shippingport | PA |
BRUNNER ISLAND | MIDDLETOWN | PENNSYLVANIA |
Brunner Island Power Plant | York Haven | PA |
BRUNNER ISLAND POWER PLANT – WESTINGHOUSE TURBINE/GENERATOR | YORK HAVEN | PA |
BRUNOTS ISLAND | PITTSBURGH | PA |
Brunot’s Island Powerhouse | Pittsburgh | PA |
Brunswick Asbestos Co Inc | Philadelphia | PA |
Brunswick Asbestos Company | Philadelphia | PA |
Brunswick Fabricators | Philadelphia | PA |
BRUSH ELECTRIC LIGHT COMPANY – LIGHT PLANT | PHILADELPHIA | PA |
BRYANT SCHOOL – 60TH STREET & CEDAR AVENUE | PHILADELPHIA | PA |
BRYDEN HORSESHOE COMPANY | CATASAUQUA | PA |
Bryn Mawr Hospital | Bryn Mawr | PA |
BRYTON CHEMICAL CO | CHESTER | PA |
BRYTON CHEMICAL COMPANY | TRAINOR | PA |
BRYTON CHEMICAL COMPANY | TRAINER | PA |
Buchanan Lumber Co | Altoona | PA |
Buck Hill Falls Inn | Buck Hill Falls | PA |
BUCK IRON COMPANY | QUARRYVILLE | PA |
BUCK IRON COMPANY INC | QUARRYVILLE | PA |
BUCK MOUNT COLLIERY #3 | MAHANOY CITY | PA |
BUCK RUN COAL COMPANY | MINERSVILLE | PA |
BUCK RUN COAL COMPANY | ROHRERSVILLE | PA |
BUCKHORN PORTLAND CEMENT COMPANY | PHILADELPHIA | PA |
BUCKS COUNTY TECHNICAL SCHOOL – WISTAR ROAD | FAIRLESS HILLS | PA |
BUCYRUS – ERIE | GLASSPORT | PA |
Budd | Philadelphia | PA |
Budd Co. | Red Lion | PA |
Budd Company | Bridgeport | PA |
BUDD COMPANY | PHILADELPHIA | PA |
BUDD COMPANY | CONSHOHOCKEN | PA |
BUDD COMPANY – RED LION PLANT | PHILADELPHIA | PA |
BUDD COMPANY FACTORY – RED LION ROAD | PHILADELPHIA | PA |
Budd Company, Polychem Division | Bridgeport | PA |
BUFFALO & SUSQUEHANNA COAL & COKE COMPANY | NORTH JUNEAU | PA |
BUFFALO & SUSQUEHANNA COAL & COKE COMPANY | SAGAMORE | PA |
BUFFALO & SUSQUEHANNA COAL & COKE COMPANY | DUBOIS | PA |
BUFFALO & SUSQUEHANNA COAL & COKE COMPANY | BIG RUN | PA |
BUFFALO HARDWARE STOVE COMPANY | FREEMANS RUN | PA |
BUFFALO VALLEY SUPPLY | LEWISBURG | PA |
BUHL STEEL COMPANY | SHARON | PA |
BUICK MOTOR DIVISION | PHILADELPHIA | PA |
BUILDERS SUPPLY CO. | WILKES-BARRE | PA |
Bulletin Building | Philadelphia | PA |
Bundy Tubing | Coaldale | PA |
Bundy Tubing Co. | Hometown | PA |
BUONO BAKERY | CHESTER | PA |
Bureau of Mines | Bruceton | PA |
BUREAU OF MINES | PITTSBURGH | PA |
Bureau of Mines (Dept. of Interior) | Bruceton | PA |
BUREAU OF MINES BUILDING | PITTSBURGH | PA |
Burke, Parsons & Bowlby | Dubois | PA |
BURLE INDUSTRIES, INCORPORATED | LANCASTER | PA |
BURNHAM | LANCASTER | PA |
Burnham Boiler Company | Lancaster | PA |
BURRELL CONSTRUCTION AND SU | NEW KENSINGTON | PA |
BURROUGHS CORPORATION | PAULI | PA |
BURROUGHS CORPORATION | PAOLI | PA |
Bustleton Elementary | Philadelphia | PA |
BUSTLETON POST OFFICE | PHILADEPHIA | PA |
BUTLER COLLIERY | PITTSTON | PA |
BUTLER HEALTH SYSTEM | BUTLER | PA |
BUTLER HIGH SCHOOL | BUTLER | PA |
BUTLER LIGHT, HEAT, AND MOTOR COMPANY – POWER PLANT | BUTLER | PA |
BUTLER MEMORIAL HOSPITAL | BUTLER | PA |
Butler Township | Butler | PA |
BUTLER WORKS | BUTLER | PA |
BYBERRY FARMS | SOMERTON | PA |
Byberry State Hospital | Philadelphia | PA |
Byberry State Mental Hospital | Philadelphia | PA |
C & C AUTO PARTS | COCHRANVILLE | PA |
C & D Battery | Conshohocken | PA |
C & D Battery | Pennsburg | PA |
C F REFRACTORIES | PORT KENNEDY | PA |
C F SIMONINS AND SONS INC | PHILADELPHIA | PA |
C H MASLAND AND SONS | CARLISLE | PA |
C. A. REED COMPANY | WILLIAMSPORT | PA |
C. H. Rowland | Phillipsburg | PA |
C. HOWARD MERCY STATE HOSPITAL | PITTSBURGH | PA |
C. Schmidt & Sons | Philadelphia | PA |
C. SCHMIDT & SONS BREWING COMPANY | PHILADELPHIA | PA |
C. SCHMIDT & SONS INC | PHILADELPHIA | PA |
C.A. SPALDING | PHILADELPHIA | PA |
C.B. COMSTOCK | PITTSBURGH | PA |
C.C. AND E.P. TOWNSEND COMPANY | NEW BRIGHTON | PA |
C.C. AND E.P. TOWNSEND COMPANY | FALLSTON | PA |
C.C. HARRISON BUILDING | PHILADELPHIA | PA |
C.C. KNIGHT AND COMPANY BUILDING | PHILADELPHIA | PA |
C.E. MCCALL MIDDLE SCHOOL | MONTOURSVILLE | PA |
C.E. MONDAY AND COMPANY | PHILADELPHIA | PA |
C.F. Luppold | Leesport | PA |
C.F. SIMONINS AND SONS | PHILADELPHIA | PA |
C.G. HUSSEY & COMPANY | LEETSDALE | PA |
C.H. BRADLEY AND COMPANY | PITTSBURGH | PA |
C.H. GEIST COMPANY | PHILADELPHIA | PA |
C.H. MASLIN AND SONS | PHILADELPHIA | PA |
C.H. Musselman Company | Biglerville | PA |
C.H. WHELLER MFG. CO | PHILADELPHIA | PA |
C.L. MILLER COMPANY | SCOTTDALE | PA |
C.R. BAIRCH AND COMPANY | EMPORIUM | PA |
CABOT CORPORATION | SOUTH BOYERTOWN | PA |
CALEDONIAN DYE WORKS | PHILADELPHIA | PA |
CALLERY CHEMICAL CO. | CALLERY | PA |
CALORIC APPLIANCE CORPORATION | TOPTON | PA |
Caloric Corp | Topton | PA |
CALUMET LUBRICANTS COMPANY | ROUSEVILLE | PA |
CAMBRIA IRON COMPANY | JOHNSTOWN | PA |
CAMBRIA LEASING CORPORATION, 73 HICKORY ST. | JOHNSTOWN | PA |
CAMBRIA LIBRARY ASSOCIATION | JOHNSTOWN | PA |
CAMBRIA PLANT – STEEL PLANT | JOHNSTOWN | PA |
CAMBRIA STEEL COMPANY | JOHNSTON | PA |
CAMBRIA STEEL COMPANY | JOHNSTOWN | PA |
CAMBRIA STEEL COMPANY | PHILADELPHIA | PA |
CAMBRIA STEEL COMPANY | MARIANNA | PA |
CAMBRIA STEEL COMPANY – BEAM YARD POWER HOUSE | JOHNSTOWN | PA |
CAMBRIA STEEL COMPANY, OFFICE BUILDING | JOHNSTOWN | PA |
CAMDEN COPPER WORKS | PHILADELPHIA | PA |
CAMDEN FIBRE MILLS | PHILADELPHIA | PA |
CAMERON COLLIERY | SHAMOKIN | PA |
Cametoo Company | Pittsburgh | PA |
CAMPBELL SOUP CO – FOURTH FLOOR REAR | PHILADELPHIA | PA |
CANADIAN WESTINGHOUSE LTD – WALTZ MILLS | RUFFDALE | PA |
CANNONSBURG IRON AND STEEL COMPANY | CANONSBURG | PA |
CANNONSBURG IRON AND STEEL COMPANY | PITTSBURGH | PA |
CANNONSBURG STEEL AND IRON WORKS | CANONSBURG | PA |
CANONSBURG POTTERY COMPAN | CANONSBURG | PA |
Can-Tex Industries, Inc. | Frugality | PA |
CAPITAL PRODUCTS | HARRISBURG | PA |
CAPITAL PRODUCTS | MECHANICSBURG | PA |
CAPITAL PRODUCTS COMPANY | MECHANICSBURGH | PA |
CAPITOL PRODUCTS CO | MECHANICSBURG | PA |
CAPITOL PRODUCTS COMPANY | MECHANICSBURG | PA |
CAPITOL PRODUCTS COMPANY | MECHANICSVILLE | PA |
Car Mar Welding Service | Berwick | PA |
CARBIDE GRAPHITE GROUP, INCORPORATED | ST. MARYS | PA |
CARBIDE GRAPHITE GROUP, INCORPORATED | SAINT MARYS | PA |
CARBON MALLEABLE COMPANY | LANCASTER | PA |
CARBON STEEL COMPANY | PITTSBURGH | PA |
CARBON TRANSIT COMPANY – POWER PLANT | MAUCH CHUNK | PA |
CARBONDALE HIGH SCHOOL | CARBONDALE | PA |
CARBONDALE MACHINE COMPANY | CARBONDALE | PA |
Carborundum | Latrobe | PA |
CAREY BROTHERS WALL PAPER MANUFACTURING COMPANY | PHILADELPHIA | PA |
Carey Manufacturing | Plymouth Meeting | PA |
Carl P. Sheaffer Plumbing | Mechanicsburg | PA |
CARLISLE GAS AND WATER COMPANY – WATER AND GAS PLANT | CARLISLE | PA |
CARLISLE HOTE PRESSED WHEEL CO | NORTH MIDDLETON TOWNSHIP | PA |
CARLSON MANUFACTURING COMPANY | CARNEGIE | PA |
CARLSON MFG CO | CARNEGIE | PA |
CARNEGIE BROTHERS AND COMPANY LIMITED | PITTSBURGH | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | PENCOYD | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | DRAVOSBURG | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | IRVING | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | HOMESTEAD | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | ALLEGHENY CITY | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | ETNA | PA |
CARNEGIE ILLINOIS STEEL CORPORATION | PITTSBURGH | PA |
CARNEGIE INSTITUTE OF TECHNOLOGY | PITTSBURGH | PA |
CARNEGIE INSTITUTE OF TECHNOLOGY, HAMERASCHLAG HALL | PITTSBURGH | PA |
CARNEGIE LIBRARY | MUNHALL | PA |
CARNEGIE LIBRARY EXTENSION | PITTSBURGH | PA |
CARNEGIE MELLON UNIVERSITY – HAMERSCHLAG HALL | PITTSBURGH | PA |
CARNEGIE MUSEUM OF ART – SCAIFE GALLERY ADDITION | PITTSBURGH | PA |
CARNEGIE PHIPPS AND COMPANY LIMITED | PITTSBURGH | PA |
CARNEGIE PHIPPS AND COMPANY LIMITED | MUNHALL | PA |
CARNEGIE SHEET COMPANY | PITTSBURGH | PA |
Carnegie Steel | Duquesne | PA |
CARNEGIE STEEL COMPANY | CLAIRTON | PA |
CARNEGIE STEEL COMPANY | COCHRAN STATION | PA |
CARNEGIE STEEL COMPANY | DUQUESNE | PA |
CARNEGIE STEEL COMPANY | MUNHALL | PA |
CARNEGIE STEEL COMPANY | NEW CASTLE | PA |
CARNEGIE STEEL COMPANY | PITTSBURGH | PA |
CARNEGIE STEEL COMPANY | RANKIN | PA |
CARNEGIE STEEL COMPANY | SOUTH DUQUESNE | PA |
CARNEGIE STEEL COMPANY | SHARON | PA |
CARNEGIE STEEL COMPANY | ALLEGHENY | PA |
CARNEGIE STEEL COMPANY | BESSEMER | PA |
CARNEGIE STEEL COMPANY | FARRELL | PA |
CARNEGIE STEEL COMPANY | HOMESTEAD | PA |
CARNEGIE STEEL COMPANY | NUMHALL | PA |
CARNEGIE STEEL COMPANY WORKS | MUNHALL | PA |
CARNEGIE STEEL COMPANY, HOMESTEAD STEEL WORKS | MUNHALL | PA |
CARNEGIE TECH | MCKEES ROCKS | PA |
CARNEGIE TECHNICAL SCHOOLS | PITTSBURGH | PA |
CARNEGIE TUBE COMPANY | CARNEGIE | PA |
Carnegie-Illinois Steel Corp. | Rankin | PA |
CARNEGIE-ILLINOIS STEEL CORP. (U.S. Steel) – IRVIN WORKS | IRVIN | PA |
Carpenter Steel | Reading | PA |
CARPENTER STEEL CO | READING | PA |
Carpenter Steel Company | Reading | PA |
CARPENTER TECHNOLOGY CORP | READING | PA |
CARRIE FURNACE | IRVIN | PA |
CARRIE FURNACE COMPANY | RANKIN | PA |
CARRIE FURNACE COMPANY | PITTSBURGH | PA |
CARSON INDUSTRIAL DEVELOPMENT CORPORATION | PITTSBURGH | PA |
CARTECH CORP | READING | PA |
CARVER ELEMENTARY SCHOOL – WEST NORRIS STREET | PHILADELPHIA | PA |
CASANAVE SUPPLY CO. | PHILADELPHIA | PA |
CASCADE COAL AND COKE COMPANY | TYLER | PA |
CASCADE COAL AND COKE COMPANY | TYLER, CLEARFIELD COUNTY | PA |
CASCADE COAL AND COKE COMPANY | SYKESVILLE | PA |
Case Erie Supply Corp | Erie | PA |
Cash And Carry Lumber Cco | Derry | PA |
Castanea Paper Co. | Johnsonburg | PA |
Catalytic Construction Company | Philadelphia | PA |
CATALYTIC, INCORPORATED | PHILADELPHIA | PA |
CATASAUQUA MANUFACTURING COMPANY | CATASAUQUA | PA |
Caterpillar Corp | York | PA |
Caterpillar Inc. | York | PA |
Caterpillar Tractor | York | PA |
CATERPILLAR TRACTOR CO. | EAST YORK | PA |
CATERPILLAR TRACTOR CO. | YORK | PA |
CATERPILLAR TRACTOR CO. – BLDG. B | EAST YORK | PA |
CATERPILLAR TRACTOR CO. – BLDG. B | YORK | PA |
CATERPILLAR TRACTOR CO. – BUILDING B. | YORK | PA |
CATERPILLAR TRACTOR COMPANY – MEMORY LANCE | YORK | PA |
CATERPILLAR TRACTOR COMPANY, MEMORY LANCE | YORK | PA |
CEDAR CLIFF SILK COMPANY | CHAMBERSBURG | PA |
CEDAR CREST COLLEGE | ALLENTOWN | PA |
CEDAR STREET | NEW CASTLE | PENNSYLVANIA |
CEDARBROOK JUNIOR HIGH SCHOOL – LONGFELLOW ROAD | WYNCOTE | PA |
CEDERBROOK HILLS APARTMENTS | CEDERBROOK HILLS | PA |
Celotex | Philadelphia | PA |
Celotex Corp. | Philadelphia | PA |
Cenco Construction Inc | Philipsburg | PA |
CENTRAL CATHOLIC HIGH SCHOOL | ALLENTOWN | PA |
CENTRAL CEMENT COMPANY | COPLAY | PA |
CENTRAL DISTRICT AND PRINTING TELEGRAPH COMPANY | PITTSBURGH | PA |
CENTRAL IRON AND STEEL COMPANY | HARRISBURG | PA |
CENTRAL LAND COMPANY | PITTSBURGH | PA |
CENTRAL NEW JERSEY RAILROAD | BETHLEHEM | PA |
CENTRAL POOR DISTRICT OF LUZERNE COMPANY | WILKES BARRE | PA |
CENTRAL POOR DISTRICT OF LUZERNE COUNTY | RETREAT | PA |
CENTRAL RAILROAD OF NEW JERSEY | ASHLEY | PA |
CENTRAL RAILROAD OF NEW JERSEY – ELECTRIC LIGHT PLANT | ASHLEY | PA |
CENTRAL WORKS | LEBANON | PA |
CENTRALIA COLLIERY | CENTRALIA | PA |
CERTAIN TEED BOILER HOUSE | AMBLER | PA |
Certainteed | Conshohocke | PA |
CertainTeed | Mountaintop | PA |
CERTAINTEED | AMBLER | PA |
CERTAINTEED | VALLEY FORGE | PA |
CERTAINTEED CORP. | AMBLER | PA |
Certain-Teed Production Corporation | York | PA |
Certainteed Products | Ambler | PA |
CertainTeed Products Company | Philadelphia | PA |
CERTAIN-TEED PRODUCTS CORP | YORK | PA |
Certainteed Products Corporation | York | PA |
CHAMBER OF COMMERCE BUILDING | PITTSBURGH | PA |
CHAMBER REDUCTION COMPANY | E MCKEESPORT | PA |
CHAMBER RIDGE APARTMENTS – STACY DRIVE | HARRISBURG | PA |
Chamberlain Ammunition Depot | Scranton | PA |
CHAMBERLAIN COAL COMPANY | POTTSVILLE | PA |
CHAMBERLAIN COAL COMPANY | PORT CARBON | PA |
CHAMBERLAIN CORP | SCRANTON | PA |
CHAMBERLAIN CORPORATION | SCRATON | PA |
CHAMBERLAIN CORPORATION | SCRANTON | PA |
CHAMBERLAIN MANUFACTURING – SCRANTON ARMY AMMUNITION PLANT | SCRANTON | PA |
Chamberlain Steel | Scranton | PA |
Chambersburg Hospital | Chambersburg | PA |
Chambersburg Market | Chambersburg | PA |
CHAMBERSBURG POWER PLANT | CHAMBERSBURG | PA |
Chambersburg Powerhouse | Chambersburg | PA |
Champion Dish Washing Machine Co. | Erie | PA |
CHAMPION VALLEY FARM – BETWEEN BERWICK & BLOOMSBURG PA | LIME RIDGE | PA |
CHAPMAN | LEHIGH COUNTY | PA |
CHAR. WALLACE | NEWCASTLE | PA |
CHARLEROI BREWING COMPANY | CHARLEROI | PA |
CHARLEROI PLATE GLASS COMPANY | PITTSBURGH | PA |
CHARLES A. BRIGGS LUMBER AND MANUFACTURING COMPANY | SCOTTDALE | PA |
CHARLES D. KAIER COMPANY LIMITED | MAHONEY CITY | PA |
CHARLES E. JOHNSON AND COMPANY | PHILADELPHIA | PA |
CHARLES E. LANGCAKE | PHILADELPHIA | PA |
CHARLES E. MONDAY AND COMPANY | PHILADELPHIA | PA |
CHARLES H. BOEHM HIGH SCHOOL | BUCKS COUNTY | PA |
CHARLES H. CASPAR FOR CLASS AND NACHOD BWG. COMPANY | PHILADELPHIA | PA |
CHARLES LACHMAN DIV (a/k/a Mohawk Carpet Mills) | PHOENIXVILLE | PA |
CHARLES LENNIG AND COMPANY, INCORPORATED | PHILADELPHIA | PA |
CHARLES LENNIG DIVISION OF THE ROHM & HAAS COMPANY | PHILADELPHIA | PA |
CHARLES LENNING AND COMPANY, INCORPORATED | PHILADELPHIA | PA |
CHARLES LENNING, TACONY CHEMICAL WORKS | PHILADELPHIA | PA |
CHARLES MCCAUL COMPANY | PHILADELPHIA | PA |
CHARLES ST. SUPPES | JOHNSTOWN | PA |
CHARLES T. SCHOEN | PHILADELPHIA | PA |
CHARMI | TUNTANNOCK | PA |
CHARMIN PAPER | MESHOPPEN | PA |
CHARMIN PAPER CO | MEHOOPANY | PA |
CHARMIN PAPER CO – MECHOOPANY MILL | TUNKHANNACK | PA |
CHARMIN PAPER COMPANY | MEHOOPANY | PA |
CHARMIN PAPER COMPANY – OUTDOOR TANK | SCRANTON | PA |
CHARMIN PAPER COMPANY, OUTDOOR TANK | SCRANTON | PA |
CHARMIN PAPER PLANT | MEHOOPANY | PA |
CHARMIN PAPER PRODS CO | KELOGPANY | PA |
CHARMIN PAPER PRODUCTS CO | MEHOOPANY | PA |
CHARMIN PAPER PRODUCTS CO | MEHOPANY | PA |
CHARMIN PAPER PRODUCTS CO. | MAHOOPANY | PA |
CHARMIN PAPER PRODUCTS COMPANY | MEHOOPANY | PA |
CHARMIN PAPER PRODUCTS COMPANY | MEHOOPANY STATION | PA |
CHARMIN PAPER ROD CO | MEHOOPANY | PA |
CHARTIERS VALLEY HIGH SCHOOL | PITTSBURGH | PA |
CHAS LACHMAN CO, INC | PHOENIXVILLE | PA |
Chas. Pfizer & Company, Inc | Easton | PA |
CHATFIELD AND WOODS PLANT | PITTSBURGH | PA |
Chatham Center | Pittsburgh | PA |
CHATHAM CENTER – WASHINGTON PLACE | PITTSBURGH | PA |
CHATHAM COLLEGE – STUDENT FACULTY CENTER | PITTSBURGH | PA |
Chelten Supply House | Philadelphia | PA |
CHELTENHAM HIGH SCHOOL | CHELTENHAM | PA |
CHELTENHAM HIGH SCHOOL | CHELTENHAM TOWNSHIP | PA |
CHEM-CLAY CORPORATION | CARNEGIE | PA |
CHEM-CLAY CORPORATION | PITTSBURGH | PA |
CHEMICAL CONCENTRATES | FORT WASHINGTON | PA |
CHEROKEE PLANT – RESEARCH BLDG – NBR 108 | DANVILLE | PA |
CHERRY RIVER PAPER COMPANY | PHILADELPHIA | PA |
CHERRY RIVER PAPER COMPANY, LAND TITLE BUILDING | PHILADELPHIA | PA |
CHESTER CTY | VALLEY FORGE | PA |
CHESTER HIGH SCHOOL | CHESTER | PA |
CHESTER IMPROVEMENT COMPANY | THURLOW | PA |
CHESTER LACE COMPANY | CHESTER | PA |
CHESTER PAPER COMPANY | CHESTER | PA |
CHESTER PROCESSING COMPANY | CHESTER | PA |
CHESTNUT HILL ACADEMY | CHESTNUT HILL | PA |
Chestnut Hill Hospital | Philadelphia | PA |
CHEVRON ASPHALT CO | SPRINGDALE | PA |
CHEW-BITTEL COMPANY | DOYLESTOWN | PA |
CHEW-BITTEL COMPANY | WILLOW GROVE | PA |
Chicago B & I. Bell | Scranton | PA |
CHICAGO BRIDGE & IRON CO | GREENVILLE | PA |
CHICAGO BRIDGE & IRON CO. | GREENVILLE | PA |
CHICAGO BRIDGE & IRON COMPANY | GREENVILLE | PA |
CHICAGO PNEUMATIC TOOL COMPANY | PITTSBURGH | PA |
CHICAGO PNEUMATIC TOOL COMPANY | FRANKLIN | PA |
CHICKIES IRON COMPANY | CHICKIES | PA |
Childers Products | Bristol | PA |
CHILDREN`S HOSPITAL | PHILADELPHIA | PA |
CHILDREN`S RECEPTION WELFARE | PHILADELPHIA | PA |
CHILDRENS HOMEOPATHIC HOSPITAL | PHILADELPHIA | PA |
Children’s Hospital | Philadelphia | PA |
Children’s Hospital | Pittsburgh | PA |
CHILLED ROLL FOUNDRY | VANDERGRIFT | PA |
CHIPMAN KNITTING COMPANY | EASTON | PA |
CHIZ BROS CO. | MUNHALL | PA |
CHIZ BROTHERS, INC | ELIZABETH | PA |
CHOCURA | PHILADELPHIA | PA |
Christ Evangelical Ref. Church | Harristown | PA |
CHRIST M.E. CHURCH | PITTSBURGH | PA |
CHRISTOPHER MINING COMPANY | WASHINGTON | PA |
CHRYSLER | NEW CASTLE | PA |
CHRYSLER | PERRYSBURG | PA |
CHURCH OF THE HOLY SPIRIT | PALMYRA | PA |
CHURCHVILLE ELEMENTARY | HOLLAND | PA |
CIRCLE HEATING SERVICE | PITTSBURGH | PA |
CITIES SERVICE OIL COMPANY | PHILADELPHIA | PA |
Citizens Bank | Latrobe | PA |
CITIZENS’ ELECTRIC ILLUMINATING COMPANY – LIGHT PLANT | PITTSTON | PA |
CITIZENS ELECTRIC ILLUMINATING COMPANY – POWER PLANT | PITTSTON | PA |
CITIZEN’S ELECTRIC LIGHT COMPANY – POWER PLANT | BRADDOCK | PA |
CITIZENS ELECTRIC LIGHT, HEAT AND POWER COMPANY – CENTRAL STATION | MCDONALD | PA |
CITIZENS’ ELECTRIC LIGHT, HEAT AND POWER COMPANY – POWER PLANT | LANCASTER | PA |
CITIZENS GENERAL HOSPITAL | NEW KENSINGTON | PA |
CITIZENS WATER COMPANY – WATER WORKS | MCDONALD | PA |
Citizens Water Supply Co. | Washington | PA |
City Hall & Courthouse | Easton | PA |
CITY MILL | PHILADELPHIA | PA |
CITY OF DANVILLE – WATER FILTRATION PLANT | DANVILLE | PA |
CITY OF LANCASTER DEPARTMENT OF WATER – MUNICIPAL WATER WORKS | LANCASTER | PA |
City Of Philadelphia | Philadelphia | PA |
City of Philadelphia – Home for Indigent & House of Correction | Holmesburg | PA |
City of Pittsburgh – 28th Street Incinerator Plant | Pittsburgh | PA |
City of Pittsburgh – Asphalt Plant | Pittsburgh | PA |
CITY OF PITTSBURGH BRILLIANT PUMPING STATION | PITTSBURGH | PA |
CITY OF PITTSBURGH DEPARTMENT OF CHARITIES | MARSHALSEA | PA |
CIVIC CENTER – 34TH STREET | PHILADELPHIA | PA |
CLAIRE FURNACE COMPANY | SHARPSVILLE | PA |
CLAIRTON BY-PRODUCTS COKE WORKS | CLAIRTON | PA |
CLAIRTON HIGH SCHOOL | CLAIRTON | PA |
CLAIRTON STEEL COMPANY | CLAIRTON | PA |
CLAIRTON STEEL WORKS AND FURNACES | CLAIRTON | PA |
CLAIRTON WORKS – METHYL NAPTHELINE DIVISION | CLAIRTON | PA |
CLARION MILLS | JOHNSONBURG | PA |
Clarion Steel Works | Pittsburgh | PA |
CLARKS SUMMIT STATE HOSPITAL | CLARKS SUMMIT | PA |
CLARMONT ENGINEERING | PHILADELPHIA | PA |
CLAY ELEMENTARY SCHOOL – CLAY SCHOOL ROAD | EPHRATA | PA |
CLAY MILL WORKS – NO .3 WORKS | CLEARFIELD | PA |
CLEAR SPRING COAL COMPANY | PITTSTON | PA |
CLEAR SPRING COAL COMPANY | WEST PITTSTON | PA |
CLEARFIELD BANK | PHILADELPHIA | PA |
CLEARFIELD HIGH SCHOOL | CLEARFIELD | PA |
CLEARFIELD HOSPITAL | CLEARFIELD | PA |
CLEARFIELD STEAM HEATING COMPANY – STEAM PLANT | CLEARFIELD | PA |
CLEARVIEW ELEM. SCHOOL | BETHLEHEM | PA |
Cleaver Brooks | Lebanon/Downingtown | PA |
Cleaver Brooks Company | Lebanon | PA |
CLELIAN HEIGHTS SCHOOL – CLELIAN HEIGHTS LANE | GREENSBURG | PA |
CLERMONT ENGINEERING CO I | PHILADELPHIA | PA |
CLEVELAND ELEMENTARY SCHOOL – NORTH NINTH STREET | ALLENTOWN | PA |
CLEVELAND ERIE COMPANY | ELK STATION | PA |
CLEVELAND WORSTED MILLS COMPANY | PHILADELPHIA | PA |
CLIMAX MOLYBDENUM CO. OF PENNA. | BURGETTSTOWN | PA |
CLIMAX MOLYBDENUM COMPANY | LANGELOTH | PA |
CLIMAX MOLYBDENUM COMPANY | LANGELOTH / BURGETTSTOWN | PA |
CLINTON IRON AND STEEL COMPANY | PITTSBURGH | PA |
CLOSURE PLANT BLDG 13-D – FLR PLT BLDG 201-B | LANCASTER | PA |
COAL AND COKE BY-PRODUCTS COMPANY | PITTSBURGH | PA |
COAL BROOK MINE | CARBONDALE | PA |
COAL TOWNSHIP HOUSE FOR THE ELDERLY | SHAMOKIN | PA |
COATESVILLE ROLLING MILL COMPANY | COATESVILLE | PA |
Cochrane D&V Crane Corp. | King of Prussia | PA |
Codo Manufacturing Corporation | Leetsdale | PA |
COKE | PHILADELPHIA | PA |
COKE BOILER HOUSE | BETHLEHEM | PA |
COKE OVEN DIVISION | BETHLEHEM | PA |
COLFAX POWER PLANT | CHESWICK | PA |
COLLIERIES SUPPLY AND EQUIPMENT COMPANY | PHILADELPHIA | PA |
COLLIERY | MORRIS | PA |
COLLIERY #18 | WANAMIE | PA |
COLLIERY SUPPLY AND EQUIPMENT | PHILADELPHIA | PA |
COLONIAL ALUMINUM & SMELTING CO | COLUMBIA | PA |
COLONIAL BERKS REAL ESTATE | READING | PA |
COLONIAL COKE COMPANY | GRINDSTONE | PA |
COLONIAL COLLIERIES COMPANY | MINERSVILLE | PA |
COLONIAL COLLIERIES COMPANY | MT. CARMEL | PA |
COLONIAL IRON COMPANY | RIDDLESBURG | PA |
COLONIAL METALS COMPANY | COLUMBIA | PA |
COLONIAL NO. 1 PLANT | SMOCK | PA |
Colonial Steel | MONACA | PA |
COLONIAL STEEL COMPANY | PITTSBURGH | PA |
COLONIAL STEEL COMPANY | MONACA | PA |
COLONIAL STEEL COMPANY | SOUTH MONACA | PA |
COLONIAL STEEL, DIVISION VANADIUM ALLOYS STEEL COMPANY | MONACA | PA |
COLONIAL SUPPLY | PITTSBURGH | PA |
COLONIAL TRUST COMPANY | READING | PA |
Colt Industries | Midland | PA |
COLT INDUSTRIES | PITTSBURGH | PA |
COLT INDUSTRIES – STAINLESS STEEL & ALLOY DIV. | MIDLAND | PA |
Colt Industries Crucible, Inc. | Midland | PA |
COLUMBIA BOILER CO OF POT | POTTSTOWN | PA |
COLUMBIA BRIDGE COMPANY | CARNEGIE | PA |
COLUMBIA GAS OF PENNSYLVANIA PLANT | BEAVER FALLS | PA |
COLUMBIA HOSPITAL | WILKINSBURG | PA |
COLUMBIA METALS COMPANY | COLUMBIA | PA |
Columbia Plumbing Supply House | Philadelphia | PA |
COLUMBIA ROLLING MILL COMPANY | WATTS | PA |
COLUMBIA ROLLING MILL COMPANY | WRIGHTSVILLE | PA |
COLUMBIA ROLLING MILL COMPANY, VESTA FURNACE | HARRISBURG | PA |
Columbia Water Company | Columbia | PA |
COLUMBIAN CARBON COMPANY | PHILADELPHIA | PA |
Comanco Inc | Berwick | PA |
Combined Paper Mills Incorporated | Roaring Springs | PA |
COMBUSTION ENGINEERING | MONONGAHELA | PA |
COMBUSTION ENGINEERING – KEYSTONE STATION | ELDERTON | PA |
COMBUSTION ENGINEERING – METROPOLITAN EDISON | READING | PA |
Combustion Engineering Inc. | Port Kennedy | PA |
COMBUSTION ENGINEERING, INC. | SCRANTON | PA |
COMBUSTION ENGINEERING, INC. | PORT KENNEDY | PA |
COMBUSTION EQUIPMENT SERV | ORELAND | PA |
COMBUSTION EQUIPMENT SERV | QUAKERTOWN | PA |
COMBUSTION SYSTEMS | PITTSBURGH | PA |
Cominsky Warehouse | Windber | PA |
COMMERCE SQUARE | PHILADELPHIA | PA |
COMMERCE ST. BUILDING. | PHILADELPHIA | PA |
COMMERCIAL ALCOHOL | PHILADELPHIA | PA |
Commercial Asbestos Paper | Erie | PA |
COMMERCIAL GAZETTE BUILDING | PITTSBURGH | PA |
COMMONS AT FALLSINGTON | MORRISVILLE | PA |
COMMONWEALTH OF PA | SELINSGROVE | PA |
COMMONWEALTH OF PENNSYLVANIA – DEPARTMENT OF PUBLIC INSTRUCTION | INDIANA | PA |
COMMONWEALTH OF PENNSYLVANIA – DEPT OF JUSTICE INS STORE ROOM | DALLAS | PA |
COMMONWEALTH OF PENNSYLVANIA – INSTITUTION STORE ROOM DEPT – JUSTICE-STATE CORR INST – NBR 3 | BELLEFONTE | PA |
COMMONWEALTH OF PENNSYLVANIA – LAURELTON STATE VILLAGE | LAURELTON | PA |
COMMONWEALTH OF PENNSYLVANIA – STATE PENITENTIARY – DEPT. OF JUSTICE – PRISON SITE | GRATERFORD | PA |
COMMONWEALTH TELEPHONE COMPANY – CENTRAL OFFICE | CLARKS SUMMIT | PA |
COMMONWEALTH TITLE INSURANCE AND TRUST COMPANY | PHILADELPHIA | PA |
COMMONWEALTH TRUST COMPANY | PITTSBURGH | PA |
CON. BRAEBURN | BRAEBURN | PA |
CONEMAUGH | NEW FLORENCE | PENNSYLVANIA |
CONEMAUGH POWER STATION | NEW FLORENCE | PA |
CONEMAUGH POWER STATION | WEST WHEATFIELD TOWNSHIP | PA |
CONEMAUGH POWER STATION – UNIT #1 | NEW FLORENCE | PA |
CONEMAUGH POWER STATION – UNIT #2 | NEW FLORENCE | PA |
CONEMAUGH POWER STATION – UNITS #1 & #2 | NEW FLORENCE | PA |
CONEMAUGH VALLEY MEMORIAL HOSPITAL | JOHNSTOWN | PA |
CONESTOGA TRACTION COMPANY | LANCASTER | PA |
CONEWANGO REFINING COMPANY | WARREN | PA |
Congoleum | Marcus Hook | PA |
Congoleum Co. | Marcus Hook | PA |
CONGOLEUM COMPANY, INCORPORATED | MARCUS HOOK | PA |
Congoleum Nairn | Marcus Hook | PA |
CONGOLEUM PLANT | MARCUS HOOK | PA |
CONGOLEUM-NAIRN, INCORPORATED | MARCUS HOOK | PA |
CONNEAUT AND ERIE TRACTION COMPANY | ELK STATION | PA |
CONNELLY CONTAINERS, INCORPORATED | BALA CYNWYD | PA |
CONNELLY CONTAINERS, INCORPORATED | PHILADELPHIA | PA |
CONNELLY PAPER COMPANY | PHILADELPHIA | PA |
Conrail | Altoona | PA |
Conrail | Reading | PA |
CONRAIL (CONSILADATED RAILROAD) | ALTOONA | PA |
Conrail (Consolidated Railroad) | Reading | PA |
CONRAIL/PENN CENTRAL/NEW YORK CENTRAL/PENNSYLV | NOT PROVIDED | PA |
CONSHOHOCKEN WORSTED MILLS COMPANY | CONSHOHOCKEN | PA |
CONSHOHOCKEN WORSTED MILLS COMPANY | PHILADELPHIA | PA |
Consolick Com Station | Tamarack | PA |
CONSOLIDATED CIGAR CO. | LANCASTER | PA |
CONSOLIDATED CIGAR CORP | CARBON | PA |
CONSOLIDATED CIGAR CORP | MC ADOO | PA |
CONSOLIDATED CIGAR CORPORATION | MCADOO | PA |
CONSOLIDATED CIGAR CORPORATION / MAFCO | MCADOO | PA |
CONSOLIDATED COAL COMPANY | LIBRARY | PA |
CONSOLIDATED GAS COMPRESSOR STATION | DELMONT | PA |
Consolidated Gas Supply Corporation – Sabinsville Station | SABINSVILLE | PA |
CONSOLIDATED ICE COMPANY | PITTSBURGH | PA |
Consolidated Rail Corp. | Philadelphia | PA |
CONSOLIDATED RAILWAY CORPORATION | ENOLA | PA |
CONSOLIDATED RAILWAY CORPORATION | CONWAY | PA |
CONSOLIDATED RAILWAY CORPORATION | PHILADELPHIA | PA |
CONSOLIDATED STEEL & WIRE COMPANY | ALLENTOWN | PA |
CONSOLIDATED STEEL & WIRE COMPANY | PITTSBURGH | PA |
CONSOLIDATED STEEL & WIRE COMPANY | BEAVER FALLS | PA |
CONSOLIDATED STEEL & WIRE COMPANY | RANKIN | PA |
CONSOLIDATED TRACTION COMPANY | PITTSBURGH | PA |
CONSOLIDATION COAL CO – RESEARCH & DEVELOPMENT DIVISION | LIBRARY | PA |
CONSOLIDATION COAL COMPANY | LIBRARY | PA |
CONSOLIDATION COAL COMPANY | JENNER | PA |
Consumers Gas Company | Reading | PA |
CONSUMERS LIGHT COMPANY – LIGHT PLANT | PLYMOUTH | PA |
CONSUMER’S MINING | HARMARVILLE | PA |
Container Corporation of America | Philadelphia | PA |
Container Corporation of America | Rencoyd | PA |
Container Corporation of America | Manayunk | PA |
CONTAINER DIVISION | ALDAN BOROUGH | PA |
Continental Can | West Mifflin | PA |
CONTINENTAL DIAMOND FIBRE / DIAMOND STATE FIBRE COMPANY | BRIDGEPORT | PA |
Continental Distilling Company | Philadelphia | PA |
CONTINENTAL DISTILLING CORP | Philadelphia | PA |
CONTINENTAL DISTILLING CORP/KNABB BARREL DIV. | MARCUS HOOK | PA |
CONTINENTAL MILLS, INCORPORATED | PHILADELPHIA | PA |
CONTINENTAL OIL CO | CHESTER | PA |
CONTINENTAL RUBBER WORKS | ERIE | PA |
Continental Wire & Cable | York | PA |
Contract Server Trucking Co. | Calmar | PA |
CONVENT OF MERCY | PITTSBURGH | PA |
CONVENTION CENTER | PHILADELPHIA | PA |
COOPER HEWITT COMPANY, DURHAM IRON WORKS | RIEGELSVILLE | PA |
COOPER INDUSTRIES | CORRY | PA |
COPLAY CEMENT COMPANY | COPLAY | PA |
COPLAY CEMENT MANUFACTURING | NAZARETH | PA |
COPLAY CEMENT MANUFACTURING COMPANY | COPLAY | PA |
COPLAY CEMENT MANUFACTURING COMPANY | ALLENTOWN | PA |
COPLAY CEMENT MFG CO | COPLAY | PA |
Copper Pittsburg Co | Bridgeville | PA |
COPPER RANGE COMPANY | LEETSDALE | PA |
Copperweld | Glassport | PA |
CORAPOLIS ICE PLANT | CORAPOLIS | PA |
Corbits, Inc. | Birdsboro | PA |
CORN AND CORN COB PRODUCTS | PHILADELPHIA | PA |
CORNELL MANUFACTURING COMPANY | LACEYVILLE | PA |
CORNING | CHARLEROI | PA |
CORNING | BRADFORD | PA |
Corning Glass | Charleroi | PA |
CORNING GLASS | BELLEFONTE | PA |
CORNING GLASS | CHAMBERSBURG | PA |
CORNING GLASS CO. | STATE COLLEGE | PA |
Corning Glass Plant | Pittsburgh | PA |
Corning Glass Works | Charleroi | PA |
Corning Glass Works | Greencastle | PA |
CORNING GLASS WORKS | BRADFORD | PA |
CORNING GLASS WORKS – BRADFORD PLANT | BRADFORD | PA |
CORNING GLASS WORKS COMPONENT PLANT | BRADFORD | PA |
CORNWALL IRON COMPANY | CORNWALL | PA |
CORNWALL ORE BANK COMPANY | CORNWALL | PA |
CORONADA APARTMENTS | PITTSBURGH | PA |
CORRIGAN-MCKENNEY STEEL COMPANY | SHARPSVILLE | PA |
CORRIGAN-MCKENNEY STEEL COMPANY | BLACK LICK | PA |
COUDERSPORT JUNIOR & SENIOR HIGH SC | COUDERSPORT | PA |
Council Rock High School | Bucks County | PA |
COUNTRY BELLE COOPERATIVE | PITTSBURGH | PA |
Country Dry Wall | Williamsport | PA |
COUSINS COFFEESHOP | PHILADELPHIA | PA |
COVE | CHESTER | PA |
COWANSHANNOCK COAL AND COKE COMPANY | PUNXSUTAWNEY | PA |
COWANSHANNOCK COAL AND COKE COMPANY | YATESBORO | PA |
COXE BROTHERS AND COMPANY | DERINGER | PA |
COXE BROTHERS AND COMPANY | DRIFTON | PA |
COXE TRAVELING GRATE COMPANY | PORT CARBON | PA |
CRAFTON ICE COMPANY | CRAFTON | PA |
CRAMP SCHOOL | PHILADELPHIA | PA |
Cramp Shipbuilding | Philadelphia | PA |
Cramp Shipyard | Philadelphia | PA |
Cramps Shipbuilding Co. | Philadelphia | PA |
CRAMPS SHIPYARD | PHILADELPHIA | PA |
Cramps Shipyard – Offices | Philadelphia | PA |
CRAMPSHIPYARD DRAVO CORPORATION | PHILADELPHIA | PA |
CRANE COMPANY | VERONA | PA |
CRANE IRON WORKS | CATASAUQUA | PA |
CRANE SUPPLY COMPANY | PITTSBURGH | PA |
CRESCENT FORGINGS COMPANY | PITTSBURGH | PA |
Crescent Iron | Philadelphia | PA |
CRESCENT MINE | CALIFORNIA | PA |
CRESCENT PORTLAND CEMENT COMPANY | CRESCENTDALE | PA |
CRESCENT PORTLAND CEMENT COMPANY | WAMPUM | PA |
CRESCENT WORKS | PITTSBURGH | PA |
CRESMER FENCE COMPANY | EXTON | PA |
CRESSONA ALUMINUM | CRESSONA | PA |
CROFT AND ALLEN COMPANY | PHILADELPHIA | PA |
CROMBY GENERATING STATION – POWER PLANT | PHOENIXVILLE | PA |
CROMBY STATION PHILADELPHIA ELECTRIC | PHOENIXVILLE | PA |
CROMPTON & KNOWLES | GIBRALTAR | PA |
Cross Brothers | Philadelphia | PA |
CROSS BROTHERS MEAT – 2ND STREET | PHILADELPHIA | PA |
Cross Brothers Meat Packing | Philadelphia | PA |
CROSS CREEK COAL COMPANY | DRIFTON | PA |
CROSS CREEK COAL COMPANY | DERINGER | PA |
CROSS CREEK COAL COMPANY | ONEIDA | PA |
CROWN ASSOCIATED PRODUCTS | PHILADELPHIA | PA |
CROWN CORK & SEAL – ASHTON ROAD | PHILADELPHIA | PA |
Crown Cork and Seal | Philadelphia | PA |
Crown Paperboard Company | Philadelphia | PA |
CROWN PRODUCTS | PHILADELPHIA | PA |
Crozier Medical Center | Chester | PA |
CRUCIBLE COAL COMPANY | ANENSBURG | PA |
Crucible Colt Industries | Midland | PA |
Crucible Steel | Midland | PA |
Crucible Steel | Pittsburgh | PA |
Crucible Steel | Aliquippa | PA |
Crucible Steel Co. | Primos | PA |
CRUCIBLE STEEL CO. | MIDLAND | PA |
Crucible Steel Company – Station 301 | Midland | PA |
CRUCIBLE STEEL COMPANY OF AMERICA | PITTSBURGH | PA |
CRUCIBLE STEEL COMPANY OF AMERICA | CLAIRTON | PA |
CRUCIBLE STEEL COMPANY OF AMERICA | MIDLAND | PA |
CRUCIBLE STEEL COMPANY OF AMERICA | BLAIR STATION | PA |
CRUCIBLE STEEL COMPANY OF AMERICA – MIDLAND WORKS | MIDLAND | PA |
CRUCIBLE STEEL COMPANY OF AMERICA, CRESCENTWORKS | PITTSBURGH | PA |
CRUCIBLE STTEL | MIDLAND | PA |
CRYSTAL ICE COMPANY, INCORPORATED | ALLEGHENY CITY | PA |
CSX TRANSPORTATION | PHILADELPHIA | PA |
CUDAHY PACKING COMPANY | PHILADELPHIA | PA |
Culp Industrial Insulation | Kingston | PA |
Culp Industrial Insulation | Kingstown | PA |
Culp Industrial Insulation Co | Kingston | PA |
CULP INDUSTRIAL INSULATION CO. | LOCK HAVEN | PA |
CULP INDUSTRIAL INSULATION CO. | KINGSTON | PA |
CUMBERLAND VALLEY DIVISION OF PENNSYLVANIA RAILROAD COMPANY | CHAMBERSBURG | PA |
CUMBERLAND VALLEY RAILROAD COMPANY | CHAMBERSBURG | PA |
CURTIN ELEM. SCHOOL | ALTOONA | PA |
CURTIS PUBLISHING | PHILADELPHIA | PA |
CURTIS PUBLISHING CO | SHARON HILL | PA |
CURTIS PUBLISHING COMPANY | PHILADELPHIA | PA |
Curtis-Wright Corporation Propeller Division | Beaver | PA |
CUSTOM INSULATION COMPANY | YORK | PA |
CYCLOPS CORPORATION | TITUSVILLE | PA |
CYCLOPS CORPORATION | THUSVILLE | PA |
CYTEMP SPECIALTY STEEL | TITUSVILLE | PA |
D M TRAHAN PROJ SUPT – HOMER CITY STN SPUR | HOMER CITY | PA |
D R BENDIX CO | PITTSBURGH | PA |
D. LUTZ & SON BREWING COMPANY | ALLEGHENY | PA |
D. LUTZ & SON BREWING COMPANY | ALLEGHENY CITY | PA |
D. M. BARE PAPER COMPANY | ROARING SPRING | PA |
D. OHER ENGINEERING COMPANY | PHILADELPHIA | PA |
D. TRAINER AND SONS | LINWOOD | PA |
D.B. FULLER | PHILADELPHIA | PA |
D.L. CLARK COMPANY | ALLEGHENY | PA |
D.L. MOLDEN AND BROTHER | PHILADELPHIA | PA |
D.M. BARE AND COMPANY | ROARING SPRINGS | PA |
D.M. BARE COMPANY | ROARING SPRINGS | PA |
D.M. BARE PAPER COMPANY | ROARING SPRINGS | PA |
D.O.E. | BRUCETON | PA |
D.R. LANE | PITTSBURGH | PA |
D.S. KEITH JUNIOR HIGH SCHOOL | ALTOONA | PA |
DAGER AND COX, EUREKA PAPER MILLS | BRIDGEPORT | PA |
Dail Rock Coal Company | Wyoming | PA |
DALLY ENGINEERING VALVE C | PITTSBURGH | PA |
DAMASCUS NICKEL STEEL COMPANY | CARNEGIE | PA |
D’AMBROSIO CLOTHING | PHILADELPHIA | PA |
DANA CORP. | READING | PA |
DANA CORPORATION, PARISH FRAME DIVISION | READING | PA |
DANIEL J. KEATING | PHILADELPHIA | PA |
DANLEVY PACKING COMPANY | EAST LIBERTY | PA |
DANVILLE AND SUNBURY STREET RAILWAY COMPANY | DANVILLE | PA |
DANVILLE POWERHOUSE | WASHINGTONVILLE | PA |
Danville State Hospital | Danville | PA |
DANVILLE STOVE AND MANUFACTURING COMPANY | DANVILLE | PA |
DANVILLE STRUCTURAL TUBING COMPANY | DANVILLE | PA |
Darby Paper Company | Darby | PA |
DARING PAPER COMPANY | BRIDGEPORT | PA |
DARING PAPER COMPANY | DOWNINGTOWN | PA |
DARLINGTON BUILDING | PHILADELPHIA | PA |
DAUGHERTY REFINERY | PETROLIA | PA |
DAUGHERTY REFINERY DIVISION | PETROLIA | PA |
DAUGHERTY REFINERY DIVISION – DEPT A | PETROLIA | PA |
Dauphin County Prison | Harrisburg | PA |
DAVISON COKE AND IRON COMPANY | NEVILLE ISLAND | PA |
Day & Zimmerman | Coatesville | PA |
DAYS INN | BRISTOL | PA |
DE WITT P HENRY CO | PHILADELPHIA | PA |
Decker Associates Inc. | Orefield | PA |
DECKER SQ STACK JOB | BALA CYNWYD | PA |
DECORATING & DISPLAY STUDIO | LANCASTER | PA |
DEFENSE PLANT CORPORATION | PHILADELPHIA | PA |
DEFENSE PLANT CORPORATION, MARINE TURBINE PLANT | SOUTH PHILADELPHIA | PA |
DEFENSE SUPPLY AGENCY | PHILADELPHIA | PA |
Degol Brothers | Gallitzin | PA |
DELANCY SCHOOL | PHILADELPHIA | PA |
Delaware Alloy Forge | Philadelphia | PA |
DELAWARE ALLOY FORGE CO | PHILADELPHIA | PA |
DELAWARE AND HUDSON CANAL COMPANY | WILKES BARRE | PA |
DELAWARE AND HUDSON COMPANY | PLYMOUTH JUNCTION | PA |
DELAWARE AND HUDSON COMPANY | PROVIDENCE | PA |
DELAWARE AND HUDSON COMPANY | SCRANTON | PA |
DELAWARE AND HUDSON COMPANY | OLYPHANT | PA |
DELAWARE AND HUDSON COMPANY | ARCHIBALD | PA |
DELAWARE AND HUDSON COMPANY | CARBONDALE | PA |
DELAWARE AND HUDSON COMPANY | PARSONS | PA |
DELAWARE AND HUDSON COMPANY | WILKES BARRE | PA |
DELAWARE AND HUDSON COMPANY | HUDSON | PA |
DELAWARE AND HUDSON COMPANY – COAL MINING PLANT | CARBONDALE | PA |
DELAWARE AND MAGNETIC SPRINGS RAILWAY COMPANY | PITTSBURGH | PA |
Delaware Asbestos | Philadelphia | PA |
DELAWARE COMPANY MEMORIAL HOSPITAL | DREXEL HILL | PA |
DELAWARE COUNTY CENTRAL HEATING COMPANY | SPRINGFIELD | PA |
Delaware County Courthouse | Media | PA |
DELAWARE COUNTY ELECTRIC COMPANY – CHESTER STATION POWER PLANT | CHESTER | PA |
DELAWARE COUNTY HOSPITAL | DELAWARE COUNTY | PA |
DELAWARE COUNTY INCINERAT | CHESTER | PA |
Delaware County Prison | Delaware County | PA |
DELAWARE COUNTY PRISON | THORNTON | PA |
DELAWARE INDUSTRIAL CHEM. CORP. | CHESTER | PA |
Delaware Insulation Co | Lester | PA |
DELAWARE LACKAWANNA AND WESTERN RAILROAD COMPANY | PLYMOUTH | PA |
DELAWARE LACKAWANNA AND WESTERN RAILROAD COMPANY | SCRANTON | PA |
DELAWARE LACKAWANNA AND WESTERN RAILROAD COMPANY, DIAMOND MINES | SCRANTON | PA |
DELAWARE MINE | HUDSON | PA |
DELAWARE RIVER CORDAGE MILL | PHILADELPHIA | PA |
DELAWARE RIVER STEEL COMPANY | CHESTER | PA |
Delaware Rubber & Asbestos | Philadelphia | PA |
DELAWARE SHIP SUPPLY CO | PHILADELPHIA | PA |
DELAWARE SHIP SUPPLY COMPANY | PHILADELPHIA | PA |
DELAWARE STORAGE AND FREEZING COMPANY | PHILADELPHIA | PA |
Delaware Valley Drywall | Croydon | PA |
DELAWARE VALLEY HOSPITAL | LANGHORNE | PA |
DELAWARE VALLEY PLASTICS CO. | PHILADELPHIA | PA |
DELAWARE WATERSIDE STATION | PHILADELPHIA | PA |
DELAWARE, LACKAWANNA & WESTERN RAILROAD COMPANY | PLYMOUTH | PA |
DELAWARE, LACKAWANNA & WESTERN RAILROAD COMPANY | SCRANTON | PA |
DELAWARE, LACKAWANNA & WESTERN RAILROAD COMPANY | NANTICOKE | PA |
DELAWARE, LACKAWANNA & WESTERN RAILROAD COMPANY | KINGSTON | PA |
DELAWARE, LACKAWANNA AND WESTERN RAILROAD COMPANY | TAYLOR | PA |
DELAWARE, LACKAWANNA AND WESTERN RAILROAD COMPANY | SCRANTON | PA |
DELAWARE, LACKAWANNA AND WESTERN RAILROAD COMPANY | NANTICOKE | PA |
DELAWARE, LACKAWANNA AND WESTERN RAILROAD COMPANY | PLYMOUTH | PA |
Delaware, Lackawanna, and Western RR | Scranton | PA |
Delmont Builder Supply | Delmont | PA |
Delta Equipment Co. (North American Smelting Co.) | Philadelphia | PA |
DELTA FINISHING CO | PHILADELPHIA | PA |
DELWORTH PAPER COMPANY | NEW CASTLE | PA |
DENT PLUMBING & HEATING, INC. | LIGHT STREET | PA |
DEPACO PAPER COMPANY | DOWNINGTON | PA |
Department Of Motor Vehicles Building | Harrisburg | PA |
DEPARTMENT OF PUBLIC WELFARE – PENNHURST STATE SCHOOL | SPRING CITY | PA |
DEPARTMENT OF SAFETY | PHILADELPHIA | PA |
DEPARTMENT OF THE INTERIOR, BUREAU OF MINES | PITTSBURGH | PA |
DES MOINES STEEL | PITTSBURGH | PA |
DESIGN TECHNIQUES | STROUDSBURG | PA |
DETROIT STEEL PRODUCTS | WEST ELIZABETH | PA |
Detroit Steel Products Company | Erie | PA |
DEVAL CORPORATION | PHILADELPHIA | PA |
DEWART MILK PRODUCTS COMPANY | TROUT RUN | PA |
DEWITT P. HENRY CANDY COMPANY | PHILADELPHIA | PA |
DEXTER PORTLAND CEMENT COMPANY | NAZARETH | PA |
DEXTER PORTLAND CEMENT COMPANY | SIEGFRIED | PA |
DIAMOND ALKALI COMPANY | PITTSBURGH | PA |
DIAMOND DRILL MACHINE COMPANY | BIRDSBORO | PA |
DIAMOND MINES | SCRANTON | PA |
DIAMOND NATIONAL BANK BUILDING | PITTSBURGH | PA |
DICKINSON SCHOOL OF LAW | CARLYLE | PA |
DIETZ TRUCKING COMPANY, 166 39TH ST. | PITTSBURGH | PA |
DILL AND COLLINS COMPANY | PHILADELPHIA | PA |
DILLINGERS DISTILLERIES, INCORPORATED | RUFFSDALE | PA |
DILWORTH PORTER AND COMPANY, LIMITED | PITTSBURGH | PA |
DIRECTORS OF THE POOR OF ALLEGHENY COUNTY | WOODVILLE | PA |
DISCON STEEL COMPANY – STEEL PLANT | FREELAND | PA |
DISPATCH PUBLISHING COMPANY | PITTSBURGH | PA |
DIVERSIFIED PRINTING | PARKESBURG | PA |
DIVERSITECH GENERAL | JEANNETTE | PA |
DIXIE CUP | EASTON | PA |
DIXIE CUP PLANT | EASTON | PA |
DIXMONT HOSPITAL FOR THE INSANE | DIXMONT | PA |
DIXON VALVE AND COUPLING CO | PHILADELPHIA | PA |
DODGE MINES | SCRANTON | PA |
DODGE STEEL CO | PHILADELPHIA | PA |
DODGE STEEL COMPANY | PHILADELPHIA | PA |
DODSON MINES, PLYMOUTH COAL COMPANY | PLYMOUTH | PA |
DOEHLER-JARVIS DIVISION, NATIONAL LEAD INDUSTRIES, INCORPORATED | POTTSTOWN | PA |
D’OLIER ENGINEERING COMPANY | PHILADELPHIA | PA |
DOLONITE BRICK CORP. OF AMERICA | YORK | PA |
DOLPH COAL COMPANY | DUNMORE | PA |
DOLPH COAL COMPANY | SCRANTON | PA |
DOLPH COAL COMPANY | WINTON | PA |
DOLPH COAL COMPANY | PICKVILLE | PA |
DOMINO SUGAR | PHILADELPHIA | PA |
Domino Sugar Refinery | Philadelphia | PA |
DON SOTERO ESCARZA | INGO PORTUGALETE | PA |
DONALDSON IRON COMPANY | EMANS | PA |
DONALDSON IRON COMPANY | EMAUS | PA |
Donegon School | Bethlehem | PA |
DONORA BREWING COMPANY | DONORA | PA |
DONORA ZINC WORKS | DONORA | PA |
DONOVAN CEMENT | PHILADELPHIA | PA |
DONOVAN COMPANY | PHILADELPHIA | PA |
DORCHESTER APARTMENTS | PLYMOUTH MEETING | PA |
DORR OLIVER INC | HAZELTON | PA |
DORR OLIVER, INCORPORATED | HAZELTOEN | PA |
DORR OLIVER, INCORPORATED | SPRING GROVE | PA |
Double Woven Corp. | Scranton | PA |
Double Woven Corporation of America | Dunmore | PA |
DOUGHERTY BACHRAN | PHILADELPHIA | PA |
DOWNINGTOWN WATER POLLUTI | DOWNINGTOWN | PA |
Dowty Corporation | Zelienople | PA |
DOYLE AND COMPANY | PHILADELPHIA | PA |
DOYLESTOWN AND EASTON STREET RAILWAY COMPANY | DOYLESTOWN | PA |
DOYLESTOWN AND WILLOW GROVE RAILWAY COMPANY | PHILADELPHIA | PA |
DOYLESTOWN HOSPITAL – WEST STATE STREET | DOYLESTOWN | PA |
Dr. Lawrence Siegel’s residence | Yardley | PA |
DR. W.A. DRYSDALE | PHILADELPHIA | PA |
DRAKE HOTEL | PHILADELPHIA | PA |
Draper & Yost, Incorporated | Tamaqua | PA |
DRAVO CONTRACTING COMPANY | PITTSBURGH | PA |
DRAVO CORP | NEVILLE ISLAND | PA |
DRAVO CORP | PITTSBURGH | PA |
Dravo Corp. | Neville Island | PA |
Dravo Corporation | Neville Island | PA |
DRAVO CORPORATION | PHILADELPHIA | PA |
DRAVO CORPORATION | PITTSBURGH | PA |
DRAVO CORPORATION | NEW BRIGHTON | PA |
DRAVO DOYLE COMPANY | PITTSBURGH | PA |
Dravo Shipbuilding | Neville Island | PA |
Dravo Shipbuilding | Pittsburgh | PA |
DREDGE PHILADELPHIA | CHESTER | PA |
Dresser Manufacturing | Wellsboro | PA |
Dresser Manufacturing Division | Bradford | PA |
DREVER | BETHAYRES | PA |
DREVER CO | BETHAGRES | PA |
DREVER COMPANY | BETHAYRES | PA |
DREVER COMPANY, BUILDING # 1 | BETHAYRES | PA |
DREVER COMPANY, BUILDING # 2 | BETHAYRES | PA |
Drexel Institute | Philadelphia | PA |
DRIGGS SEABURY ORDNANCE COMPANY | SHARON | PA |
DUBOIS ELECTRIC AND TRACTION COMPANY – POWER PLANT | DUBOIS | PA |
Dubois Hospital | Dubois | PA |
DUBOIS HOSPITAL – HOSPITAL AVENUE | DUBOIS | PA |
DUER SPRING AND MFG CO DIV | MCKEES ROCKS | PA |
DUFF MANUFACTURING COMPANY | PITTSBURGH | PA |
DUFF-NORTON MANUFACTURING COMPANY | PITTSBURGH | PA |
DUGGAN & MARCON, INCORPORATED | ALLENTOWN | PA |
DUNBAR FURANCE COMPANY | DUNBAR | PA |
DUNHAM-BUSH | HARRISBURG | PA |
DUNLEVY AND BROTHER COMPANY | EAST LIBERTY | PA |
DUNMORE IRON AND STEEL COMPANY | DUNMORE | PA |
DUPLAN SILK CORPORATION | HAZLETON | PA |
Dupont | Philadelphia | PA |
DUPONT CHEMICAL | KENNETT SQUARE | PA |
DUPONT CHEMICAL | PHILADELPHIA | PA |
DUQUESNE BREWING CO. – BOTTLING HOUSE | PITTSBURGH | PA |
DUQUESNE BREWING CO. OF PITTSBURGH – NEW BOTTLING HOUSE | PITTSBURGH | PA |
DUQUESNE BREWING COMPANY | PITTSBURGH | PA |
DUQUESNE BREWING COMPANY | MCKEES ROCKS | PA |
Duquesne Club | Pittsburgh | PA |
DUQUESNE FORGE COMPANY | RANKIN | PA |
DUQUESNE FORGE COMPANY | PITTSBURGH | PA |
DUQUESNE ICE COMPANY | PITTSBURGH | PA |
DUQUESNE INCINERATOR | DUQUESNE | PA |
DUQUESNE LIGHT – CHESWICK POWER PLANT | CHESWICK | PA |
DUQUESNE LIGHT – ELRAMA POWER PLANT | ELRAMA | PA |
Duquesne Light Co | Cheswick | PA |
Duquesne Light Co | Shipping Port | PA |
DUQUESNE LIGHT CO | ELRAMA | PA |
DUQUESNE LIGHT CO | PITTSBURGH | PA |
DUQUESNE LIGHT CO – BEAVER VALLEY NUCLEAR POWER PLANT | Shippingport | PA |
Duquesne Light Co – Cheswick Power Station | Springdale | PA |
DUQUESNE LIGHT CO – CHESWICK STATION | SPRINGDALE | PA |
Duquesne Light Co – Elrama Power Plant | ELRAMA | PA |
Duquesne Light Co – Elrama Power Plant – Storeroom | ELRAMA | PA |
Duquesne Light Co – Frank R. Phillips Power Station | WIRETON | PA |
Duquesne Light Co – Shippingport Nuclear Power Station | SHIPPINGPORT | PA |
DUQUESNE LIGHT CO -PHILLIPS POWER PLANT – STOREROOM | WIRETON | PA |
Duquesne Light Co Phillips Power Station | South Heights | PA |
Duquesne Light Co. – Brunot Island Generating Station | Pittsburgh | PA |
Duquesne Light Co. – Brunot Island Generating Station – Storeroom | Pittsburgh | PA |
DUQUESNE LIGHT CO. – ELRAMA POWER STATION | Jefferson Hills | PA |
Duquesne Light Co.- Frank R. Phillips Power Station | Cheswick | PA |
DUQUESNE LIGHT CO-CENTRAL STR | PITTSBURGH | PA |
Duquesne Light Company | Pittsburgh | PA |
Duquesne Light Company | Shippingport | PA |
DUQUESNE LIGHT COMPANY | ELRAMA | PA |
DUQUESNE LIGHT COMPANY – 13TH STREET PLANT | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – 20TH STREET STATION | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – 30TH STREET STATION | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – BRUNOT ISLAND GENERATING STATION | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – CHESWICK #1 | CHESWICK/SPRINGDALE | PA |
DUQUESNE LIGHT COMPANY – Cheswick Station | CHESWICK | PA |
DUQUESNE LIGHT COMPANY – CHESWICK STATION | SPRINGDALE | PA |
DUQUESNE LIGHT COMPANY – COLFAX POWER STATION | SPRINGDALE | PA |
DUQUESNE LIGHT COMPANY – COMBINED CYCLE PLANT | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – ELRAMA POWER PLANT | ELRAMA | PA |
DUQUESNE LIGHT COMPANY – ELRAMA POWER STATION – WASHINGTON COUNTY | ELRAMA | PA |
DUQUESNE LIGHT COMPANY – GLENWOOD STATION | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – GRANT STATION | PITTSBURGH | PA |
Duquesne Light Company – James H. Reed Power Station | Pittsburgh | PA |
DUQUESNE LIGHT COMPANY – PHIPPS POWER PLANT | PITTSBURGH | PA |
DUQUESNE LIGHT COMPANY – POWER STATION | RANKIN | PA |
DUQUESNE LIGHT COMPANY – SHIPPINGPORT #1 | SHIPPINGPORT | PA |
DUQUESNE LIGHT COMPANY – SHIPPINGPORT ATOMIC POWER STATION | SHIPPINGPORT | PA |
DUQUESNE LIGHT COMPANY- BEAVER VALLEY NUCLEAR POWER PLANT | SHIPPINGPORT | PA |
DUQUESNE LIGHT COMPANY- CHESWICK STATION | SPRINGDALE | PA |
DUQUESNE LIGHT COMPANY- ELRAMA POWER PLANT | ELRAMA | PA |
DUQUESNE STEEL COMPANY | COCHRAN STATION | PA |
DUQUESNE STEEL WORKS | COCHRAN STATION | PA |
DUQUESNE STEEL WORKS | DUQUESNE | PA |
Duquesne Works | Duquesne | PA |
DURALOY COMPANY | SCOTTDALE | PA |
DURHAM PUBLIC SCHOOL | PHILADELPHIA | PA |
DUTTON PLACE APTS | FOLSOM | PA |
DYNAMET INC | WASHINGTON | PA |
DYNAMIC METAL FORMING, INCORPORATED | KOPPEL | PA |
Dynamit Nobel of America, Inc. | Mountain Top | PA |
Dyna-Vac Power Cleaning of Buxmont | Doylestown | PA |
E I Dupont De Nemours & Co | Twin Oaks | PA |
E BERGENDAHL CO | PHILADEPHIA | PA |
E I DUPONT DE NEMOURS | CORNWELLS HEIGHTS | PA |
E I DUPONT DENEMOURS | WASHINGTON | PA |
E Keeler | Williamsport | PA |
E KEELER CO | WILLIAMSPORT | PA |
E S Atkinson | Erie | PA |
E Thompson Works | Braddock | PA |
E. & G. BROOKE IRON COMPANY | BIRDSBORO | PA |
E. & G. BROOKE IRON COMPANY | ST. PETERS | PA |
E. & G. BROOKE PLANT | BIRDSBORO | PA |
E. BERGENDAHL | PHILADELPHIA | PA |
E. J. LAVINO & COMPANY | SHERIDAN | PA |
E. KEELER CO. | WILLIAMSPORT | PA |
E. Keeler Company | Williamsport | PA |
E. STROUDSBURG STATE TEACHERS COLLEGE – BOILER HOUSE ADDITION | EAST STROUDSBURG | PA |
E. T. Stotesbury Residence | Philadelphia | PA |
E.B. LEAF COMPANY | PHILADELPHIA | PA |
E.C. KNIGHT AND COMPANY | PHILADELPHIA | PA |
E.F. HOUGHTON AND COMPANY | PHILADELPHIA | PA |
E.G. Budd Company | Philadelphia | PA |
E.I. DU PONT DE NEMOURS & COMPANY | PHILADELPHIA | PA |
E.I. DU PONT DE NEMOURS & COMPANY | GIBBSTOWN | PA |
E.I. DU PONT DE NEMOURS & COMPANY | CORNWELLIS HEIGHTS | PA |
E.I. Du Pont De Nemours | Philadelphia | PA |
E.I. Dupont de Nemours & Company | Philadelphia | PA |
E.I. DUPONT DE NEMOURS & COMPANY | HAZELTON | PA |
E.J. LAVINO & COMPANY | PHILADELPHIA | PA |
E.J. LAVINO & COMPANY | PLYMOUTH MEETING | PA |
E.J. LAVINO & COMPANY | SHERIDAN | PA |
E.J. LAVINO AND COMPANY | SHERIDAN | PA |
E.J. LAVINO AND COMPANY | MARIETTA | PA |
E.L. ROTHSCHILD BUILDING | PHILADELPHIA | PA |
E.l. Weigland | Pittsburgh | PA |
E.M. AND W. FERGUSON | PITTSBURGH | PA |
E.N. Hyde Heating Company | Pittsburgh | PA |
E.S. & ATKINSON | ERIE | PA |
E.S. FOX & CO. | READING | PA |
E.S. FOX DIV., NORTHEASTERN LUMBER CO. | READING | PA |
E.T. EDWARDS | COLUMBIA | PA |
E.W. BLISS | MIDLAND | PA |
E.W. BLISS | PITTSBURGH | PA |
E.W. BLISS COMPANY | MIDLAND | PA |
E.W. RHODES MIDDLE SCHOOL – WEST CLEARFIELD STREET | PHILADELPHIA | PA |
EAGLE HILL COLLIERY | PORT CARBON | PA |
EARBEU HARDING AND COMPANY | PHILADELPHIA | PA |
EAST BOSTON COLLIERY | KINGSTON | PA |
EAST BROAD TOP RAILROAD AND COAL COMPANY | ORBISONIA | PA |
EAST BROAD TOP RAILROAD COMPANY | ORBISONIA | PA |
EAST END ELECTRIC LIGHT COMPANY – POWER PLANT | EAST LIBERTY | PA |
EAST END ELECTRIC LIGHT COMPANY – POWER PLANT | PITTSBURGH | PA |
EAST HEMPFIELD ELEM. SCHOOL | GREENSBURG | PA |
EAST LEHIGH COLLIERY | TAMAQUA | PA |
EAST LIBERTY | PITTSBURGH | PA |
EAST LIBERTY HOME DRESSED MEAT COMPANY | PITTSBURGH | PA |
EAST LIBERTY MARKET | PITTSBURGH | PA |
EAST PENN REFRACTORIES | READING | PA |
EAST PENN REFRACTORIES CO | READING | PA |
EAST PENNSYLVANIA ELECTRIC COMPANY – POWER PLANT | PINE GROVE | PA |
EAST PETERSBURG ELEMENTARY SCHOOL – LEMON STREET | EAST PETERSBURG | PA |
EAST PITTSBURGH WATER COMPANY – EAST PITTSBURGH WATER WORKS | EAST PITTSBURGH | PA |
EAST SENIOR HIGH SCHOOL | WEST CHESTER | PA |
EAST STROUDSBURG STATE TEACHERS COLLEGE – INFIRMARY BUILDING | EAST STROUDSBURG | PA |
EASTERN AFFILIATED SERVICES CORP | EASTON | PA |
EASTERN ASPHALT COMPANY | PHILADELPHIA | PA |
EASTERN FOUNDRY CO | BOYENTOWN | PA |
EASTERN FOUNDRY CO | BOYERTOWN | PA |
EASTERN FOUNDRY COMPANY | BOYERTOWN | PA |
EASTERN FOUNDRY COMPANY | HOVERTOWN | PA |
EASTERN GUNITE CORPORATION | BALA CYNWYD | PA |
EASTERN HYDRAULIC PRESS BRICK COMPANY | PHILADELPHIA | PA |
EASTERN INDUSTRIAL INSULATION | ALLENTOWN | PA |
EASTERN INDUSTRIAL INSULATION | READING | PA |
Eastern Industrial Insulation Co | Reading | PA |
EASTERN MERCY HEALTH SYSTEMS | PITTSBURGH | PA |
EASTERN PENN PSYCHIATRIC INSTITUTE | PHILADELPHIA | PA |
EASTERN PENNSYLVANIA POWER COMPANY – EASTON POWER PLANT | EASTON | PA |
EASTERN PENNSYLVANIA RAILWAYS COMPANY | POTTSVILLE | PA |
EASTERN PENNSYLVANIA RAILWAYS COMPANY | PALO ALTO | PA |
EASTERN STATE SCHOOL | LANGHORNE | PA |
EASTERN STATE SCHOOL | NESHAMINY | PA |
EASTERN STEEL COMPANY | POTTSVILLE | PA |
EASTON GAS AND ELECTRIC COMPANY – POWER PLANT | EASTON | PA |
EASTON HIGH SCHOOL | EASTON | PA |
Easton Hospital | Easton | PA |
EASTON SHOPPING CENTER | EASTON | PA |
Eaton Corporation | Philadelphia | PA |
EATON CORPORATION | BEAVER | PA |
EBENSBURG COAL COMPANY | COLVER | PA |
EBENSBURG LIGHT, HEAT AND POWER COMPANY – POWER PLANT | EBENSBURG | PA |
EBERHARD FABER COMPANY – PENCIL PLANT | MOUNTAIN TOP | PA |
EBERLE TANNING COMPANY | WESTFIELD | PA |
ECONOLODGE | LEVITTOWN | PA |
Economy Sauer Chatham Center | Pittsburgh | PA |
EDDYSTONE GENERATING STATION | EDDYSTONE | PA |
Eddystone Manufacturing Company | Eddystone | PA |
EDDYSTONE MFG CO | EDDYSTONE | PA |
EDDYSTONE POWERHOUSE | EDDYSTONE | PA |
Eddystone Station | Eddystone | PA |
EDDYSTONE STATION | PHILADELPHIA | PA |
Eddystone Steel | North Eddystone | PA |
EDENSBURG COAL COMPANY | COLVER | PA |
EDENSBURG POWER | EBENSBURG | PA |
EDGAR THOMPSON STEEL WORKS | BESSEMER | PA |
EDGAR THOMPSON WORKS | BRADDOCK | PA |
EDGECOMB STEEL | PHILADELPHIA | PA |
Edgewater Corp | Oakmont | PA |
EDGEWATER CORP. | PITTSBURGH | PA |
Edgewater Corporation | Oakmont | PA |
EDGEWATER CORPORATION | PITTSBURGH | PA |
EDGEWATER STEEL | OAKMONT | PA |
EDGEWATER STEEL CO | VERONA | PA |
EDGEWATER STEEL COMPANY | OAKMONT | PA |
EDGEWATER STEEL COMPANY | PITTSBURGH | PA |
EDGEWATER STEEL COMPANY | OAKMONT ALLEGHENY COUNTY | PA |
EDGEWATER STEEL COMPANY | VERONA | PA |
Edgewater Steel Corporation | Oakmont | PA |
EDGEWOOD MILL | SHAMOKIN | PA |
EDINBORO STATE COLLEGE – STADIUM | EDINBORO | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – ALTOONA PLANT | ALTOONA | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – ELECTRIC LIGHT PLANT | HAZLETON | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – ELECTRICAL PLANT | MT. CARMEL | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – POWER PLANT | SUNBURY | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – POWER PLANT | LANCASTER | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – POWER PLANT | WEST CHESTER | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – POWER PLANT | SHAMOKIN | PA |
EDISON ELECTRIC ILLUMINATING COMPANY – POWER PLANT | BELLEFONTE | PA |
EDISON ELECTRIC LIGHT COMPANY – GENERATING PLANT | PHILADELPHIA | PA |
EDISON ELECTRIC LIGHT COMPANY – POWER PLANT | YORK | PA |
EDISON INTERNATIONAL | HOMER CITY | PA |
EDISON MISSION ENERGY | HOMER CITY | PA |
EDITH FURNACE | ALLEGHENY | PA |
EDWARD FAY AND SON | PHILADELPHIA | PA |
EDWIN HARRINGTON SON AND COMPANY | PHILADELPHIA | PA |
EHRET MAGNESIA MANUFACTURING COMPANY | PORT KENNEDY | PA |
Ehret-Magnesium Mfg. (Fuller-Austin) | Valley Forge | PA |
Einstein Medical Center | Philadelphia | PA |
EINSTEIN MEDICAL CENTER, SOUTHERN DIVISION | PHILADELPHIA | PA |
EISENHOWER APARTMENTS | READING | PA |
Electra Products Company | Lansdale | PA |
Electralloy Corp | Oil City | PA |
ELECTRIC AUTOLITE COMPANY | HAZELTON | PA |
ELECTRIC COMPANY OF AMERICA – LAND TITLE BUILDING | PHILADELPHIA | PA |
Electric Storage Battery Co. | Philadelphia | PA |
ELECTRIC STORAGE BATTERY COMPANY | PHILADELPHIA | PA |
Electric Storage Battery Company – Manufacturing Plant | Philadelphia | PA |
ELECTRO ALLOY | OIL CITY | PA |
Electro Chemicals | Emmaus | PA |
ELECTROTHERM CORP | PHILADELPHIA | PA |
ELEMENTIS PIGMENTS, INCORPORATED | EASTON | PA |
ELENGER IND. | MOSCOW | PA |
ELEVENTH WARD SCHOOL | ALLEGHENY | PA |
ELIZA PIPE SHOP | MCKEES ROCKS | PA |
ELIZABETH STEEL MAGEE HOSPITAL | PITTSBURGH | PA |
ELIZABETH STEET MAGEE HOSPITAL | PITTSBURGH | PA |
ELJER CO | FORD CITY | PA |
ELK TANNING COMPANY | COUDERSPORT | PA |
ELK TANNING COMPANY | CURWENSVILLE | PA |
ELKLAND LEATHER COMPANY | ELKLAND | PA |
ELLECTRALLOY CORPORATION | OIL CITY | PA |
ELLIOT CO | JEANETTE | PA |
ELLIOT COMPANY | JEANNETTE | PA |
ELLIOT COMPANY | RIDGWAY | PA |
ELLIOT COMPANY DIVISION OF CARRIER | JEANETTE | PA |
ELLIOT STEEL COMPANY | JEANETTE | PA |
ELLIOTT CO | JEANNETTE | PA |
ELLIOTT COMPANY | JEANNETTE | PA |
ELLIOTT COMPANY | RIDGWAY | PA |
Elliott Company – Accoustical Lab | Ridgeway | PA |
ELLIOTT COMPANY – DIVISION OF CARRIER | JEANETTE | PA |
ELLIOTT COMPANY PLANT | JEANNETTE | PA |
ELLIOTT TURBOMACHINERY COMPANY, INCORPORATED | JEANNETTE | PA |
ELLIS SCHOOL | PITTSBURGH | PA |
ELLSWORTH COAL COMPANY | ELLSWORTH | PA |
ELLSWORTH COAL COMPANY | COKEBURG | PA |
ELLSWORTH COLLIERIES COMPANY | ELLSWORTH, WASHINGTON COUNTY | PA |
Ellwood City Forge | Ellwood City | PA |
ELLWOOD CITY FORGE CORP | ELLWOOD CITY | PA |
ELLWOOD CITY MUNICIPAL ELECTRIC DEPARTMENT – ELECTRIC PLANT | ELLWOOD CITY | PA |
ELRAMA POWER PLANT | ELRAMA | PA |
ELRAMA POWER STATION | Elrama | PA |
ELRAMA POWER STATION – WASHINGTON COUNTY | ELRAMA | PA |
Elrama Powerhouse | Elrama | PA |
ELWOOD CITY FORGE | ELLWOOD CITY | PA |
ELWYN TRAINING SCHOOL | ELWYN | PA |
EMBREEVILLE STATE HOSPITA | EMBREEVILLE | PA |
EMLENTON REFINING COMPANY | EMLENTON | PA |
EMMAUS THEATRE | EMMAUS | PA |
EMPIRE BUILDING | PITTSBURGH | PA |
EMPIRE IRON AND STEEL COMPANY | CATASAUQUA | PA |
EMPIRE IRON AND STEEL COMPANY | MACUNGIE | PA |
EMPIRE MILLS | PHILADELPHIA | PA |
EMPIRE REEVES STEEL CORPORATION | PITTSBURGH | PA |
EMPIRE STEEL PRODUCTS | TEMPLE | PA |
ENAMEL PRODUCTS & PLATING COMPANY | McKEESPORT | PA |
ENAMELSTRIP CORPORATION | ALLENTOWN | PA |
ENG RESEARCH BLD 19 TEST COIL | YORK | PA |
ENGR ANNEX | PITTSBURGH | PA |
ENTERPRISE GALVANIZING | PHILADELPHIA | PA |
EPISCOPAL ACADEMY – SWIMMING POOL | MERION | PA |
EPISCOPAL HOSPITAL | PHILADELPHIA | PA |
EPSILON ZETA ALUMNI ASSOCIATION | PHILADELPHIA | PA |
EQUIPMENT ENGINEERING COMPANY | PITTSBURGH | PA |
EQUIPMENT ENIGNEERING CO | PITTSBURGH | PA |
EQUITABLE GAS – HEATING AND COOLING PLANT | PITTSBURGH | PA |
EQUITABLE GAS COMPANY – GAS PLANT | ELRAMA | PA |
Equitable Gas Energy Co. | Pittsburgh | PA |
Equitable Gas Energy Co. | Waynesburg | PA |
EQUITABLE LIFE ASSURANCE SOCIETY – GATEWAY CENTER – BASEMENT STOCKROOM 1 | PITTSBURGH | PA |
ERBEN HARDING COMPANY | TACONY | PA |
ERBEN HARDING COMPANY | PHILADELPHIA | PA |
ERIC C HOLZER | CHESTER | PA |
ERIE CAMBRIDGE UNION AND CORRY RAILWAY COMPANY | MILL VILLAGE | PA |
ERIE CAR WORKS, LIMITED | ERIA | PA |
Erie City Energy Division | Erie | PA |
Erie City Iron Works | Erie | PA |
ERIE COKE COMPANY | ERIE | PA |
Erie County Courthouse | Erie | PA |
ERIE COUNTY ELECTRIC COMPANY – POWER STATION | ERIE | PA |
ERIE ELECTRIC MOTOR COMPANY – POWER STATION | ERIE | PA |
Erie Forge & Steel | Erie | PA |
ERIE FORGE & STEEL CORP. | ERIE | PA |
ERIE FORGE AND STEEL COMPANY | ERIE | PA |
Erie Industrial Insulation | Mckean | PA |
ERIE LACKAWANNA RAILROAD – PENNSYLVANIA STATE POLICE – TEAM TRACK – OBLATES OF ST. JOSEPH | KINGSTON | PA |
ERIE LACKAWANNA RAILROAD – PUBLIC SIDING | KINGSTON | PA |
ERIE LACKAWANNA RAILROAD – TEAM TRACK | KINGSTON | PA |
Erie Lighting Co. | Erie | PA |
ERIE LIGHTING COMPANY – POWER STATION | ERIE | PA |
ERIE MALLEABLE IRON COMPANY | Erie | PA |
ERIE MARINE | ERIE | PA |
Erie Railroad Co. | Meadville | PA |
ERIE RAILROAD COMPANY | DUNMORE | PA |
ERIE RAILROAD COMPANY | SUSQUEHANNA | PA |
ERIE RAILROAD COMPANY | MEADVILLE | PA |
ERIE WORKS | ERIE | PA |
Erwin Plumbing | Philadelphia | PA |
ES MAGEE HOSPITAL | PITTSBURGH | PA |
ESAB | Hanover | PA |
ESAB | York | PA |
ESSO STANDARD OIL COMPANY | PITTSBURGH | PA |
ESTATE OF H.W. OLIVER | PITTSBURGH | PA |
ESTATE OF HENRY W. OLIVER | PITTSBURGH | PA |
ESTATE OF JAMES LORD JR. | PHILADELPHIA | PA |
ESTATE OF STEPHEN GREENE | PHILADELPHIA | PA |
ESTATE OF WILLIAM WEIGHTMAN | PHILADELPHIA | PA |
ETERNO ASBESTOS LUMBER AND SHINGLE COMPANY | REDINGTON | PA |
EUREKA | KINGSTON | PA |
EUREKA #30 | SCALP LEVEL | PA |
EUREKA #7 | BEULAH | PA |
EUREKA COLLIERY #35 | WINDBER | PA |
Eureka Div Of Litton Ind | Dunmore | PA |
EUREKA LIMESTONE – TANK INSULATION | PHILADELPHIA | PA |
EUREKA SPECIALTY CO. | SCRANTON | PA |
EUREKA STONE QUARRY INCORPORATED – BUCKS COUNTY | EUREKA | PA |
EUREKA STONE QUARRY, INCORPORATED | EUREKA | PA |
EUREKA STONE QUARRY, INCORPORATED | CHALFONT | PA |
EUREKA STONE QUARRY, INCORPORATED | CHALFOND | PA |
EUREKA STONE QUARRY, INCORPORATED | BUCKS COUNTY | PA |
EUREKA STONE QUARRY, INCORPORATED, TANK INSULATION | PHILADELPHIA | PA |
EVANS COLLIERY COMPANY | HAZELTON | PA |
Evans Memorial | Philadelphia | PA |
EVERTS AND OVERDEER, INCORPORATED | LANCASTER | PA |
Ew Bowman Inc | Uniontown | PA |
EWEN BREAKER | PITTSTON | PA |
Excelsior Brass | Reading | PA |
EXCELSIOR COAL COMPANY | EXCELSIOR | PA |
EXCELSIOR STEAM PLANNING MILL | MAUCH CHUNK | PA |
EXCHANGE BUILDING | PHILADELPHIA | PA |
EXELON POWER | PHOENIXVILLE | PA |
EXELON POWER | EDDYSTONE | PA |
EXETER COLLIERY | PITTSTON | PA |
EXETER COLLIERY | WEST PITTSTON | PA |
EXETER HIGH SCHOOL | EXETER | PA |
EXETER MACHINE WORKS | PITTSTON | PA |
EXETER POWER COMPANY – POWER PLANT | PITTSTON | PA |
EXIDE BATTERY | PHILADELPHIA | PA |
EXIDE BATTERY COMPANY | PHILADELPHIA | PA |
EXOTIC METALS | RIDGWAY | PA |
EXTON MALL | EXTON | PA |
Extrusion Die Makers | Murrysville | PA |
F B Wright Company | Bridgeville | PA |
F B Wright Company | Pittsburgh | PA |
F M C CORP | KENNETT SQUARE | PA |
F. & M. SCHAEFER BREWING COMPANY | TREXLERTOWN | PA |
F. MILLER SPRING & MANUFACTURING COMPANY | PITTSBURGH | PA |
F.A. PAVLICK | FAIRLESS HILLS | PA |
F.A. POTH AND SONS | PHILADELPHIA | PA |
F.A. POTH BREWING COMPANY | PHILADELPHIA | PA |
F.C. ROBERTS | PHILADELPHIA | PA |
F.C. ROBERTS AND COMPANY | PHILADELPHIA | PA |
F.C. ROBERTS AND COMPANY ENGINEERS | PHILADELPHIA | PA |
F.C. ROBERTS COMPANY ENGINEERS | PHILADELPHIA | PA |
F.F. GEISLER AND COMPANY | PITTSBURGH | PA |
F.G. VOGT AND SONS | PHILADELPHIA | PA |
F.H. KALBFLEISCH CORPORATION | ERIE | PA |
F.R. DRAVO AND COMPANY | PITTSBURGH | PA |
F.S. EDMONDS SCHOOL – THOURON AVENUE | PHILADELPHIA | PA |
F.W DARLINGTON C.E. | PHILADELPHIA | PA |
F.W. TUNNELL GLUE MANUFACTURING | PHILADELPHIA | PA |
FABRICATING ENGINEERING C | YORK | PA |
FABRICATING ENGINEERING, INCORPORATED | YORK | PA |
FAIRHILL APARTMENTS | PHILADELPHIA | PA |
Fairless Hills Steel Mill | Morrisville | PA |
Fairless Steel | Fairless Hills | PA |
FAIRLESS WORKS | FAIRLESS HILLS | PA |
FAIRLESS WORKS – #2 CONTINUOUS ANNEALING LINE | MORRISVILLE | PA |
Fairless Works US Steel | Fairless | PA |
FAIRMOINT WOOSTER MILLS | PHILADELPHIA | PA |
Fairmont Supply Co | Washington | PA |
Fairmont Supply Company | Washington | PA |
FAIRMOUNT PARK COMMISSION | PHILADELPHIA | PA |
FAIRMOUNT PARK TRANSPORTATION COMPANY | PHILADELPHIA | PA |
FAIRVIEW SCHOOL – SOUTH ERIE PENNA | FAIRVIEW | PA |
FALCON EQUIPMENT CO | NEW BRIGHTON | PA |
Fanny Farmers Candy Manufacturing | Harrisburg | PA |
FARENTUM BOROUGH | TARENTUM | PA |
Farm Show Building | Harrisburg | PA |
FARMERS BANK BUILDING | PITTSBURGH | PA |
FARMERS CHEESE | NEW WILMINGTON | PA |
FARMERS DEPOSIT NATIONAL BANK BUILDING | PITTSBURGH | PA |
FARRELL STEEL WORKS AND FURNACES | FARRELL | PA |
FAUST DISTILLERY | GLEN ROCK | PA |
FAWCUS MACHINE COMPANY | FORD CITY | PA |
FAYETTE CTY | NEWELL | PA |
FAYETTE MANUFACTURING COMPANY | CHESTER | PA |
FAYETTE R. PLUMB, INCORPORATED | PHILADELPHIA | PA |
FAZEKAS FRANK | EASTON | PA |
FEDERAL CONTAINER COMPANY | PHILADELPHIA | PA |
FEDERAL ENAMELING AND STAMPING COMPANY | MCKEES ROCKS | PA |
FEDERAL LABORATORIES INC | SALTSBURG | PA |
FEDERAL OFFICE BLDG | PITTSBURGH | PA |
FEDERAL OFFICE BUILDING | PHILADELPHIA | PA |
FEDERAL OFFICE BUILDING – WALNUT STREET | HARRISBURG | PA |
FEDERAL OFFICE BUILDING & COURTHOUSE – 6TH & ARCH STREETS | PHILADELPHIA | PA |
FEDERAL PAPER BOARD COMPANY, INCORPORATED, PAPER BOARD DIVISION | READING | PA |
FEDERAL RESERVE BANK OF PHILADELPHIA | PHILADELPHIA | PA |
FEDERAL SAVINGS BANK | ARDMORE | PA |
FEDERAL SHIPBUILDING AND DRY DOCK CO. OF U.S. | PITTSBURGH | PA |
FEDERAL STEEL FOUNDRY COMPANY | CHESTER | PA |
Federal Street Freight Station | Philadelphia | PA |
FEITA CORPORATION | PHILADELPHIA | PA |
FELINS MEAT PACKING | PHILADELPHIA | PA |
FELS & COMPANY | PHILADELPHIA | PA |
FELS AND COMPANY | PHILADELPHIA | PA |
FELS JUNIOR HIGH SCHOOL | PHILADELPHIA | PA |
FELS NAPTHA SOAP COMPANY, 73RD AND WOODLAND | PHILADELPHIA | PA |
FELS SOAP COMPANY | PHILADELPHIA | PA |
Fenestra Incorporated | Erie | PA |
FERRO CORP | BIGLER | PA |
FERRO CORP | ERIE | PA |
FERRO CORP | HAZELTON | PA |
FERROWS CHEMICAL COMPANY | PITTSBURGH | PA |
FIBROUS GLASS CO | CARLISILE | PA |
FIBROUS GLASS PRODUCTS | MOUNTAIN TOP | PA |
Fidelity Bank Building | Philadelphia | PA |
FIDELITY INSURANCE TRUST AND SAFETY DEPOSIT COMPANY | PHILADELPHIA | PA |
FIDELITY MUTUAL LIFE ASSOCIATION | PHILADELPHIA | PA |
FIDELITY MUTUAL LIFE BUILDING | PHILADELPHIA | PA |
FIDELITY MUTUAL LIFE INSURANCE COMPANY | PHILADELPHIA | PA |
Findlay Refractories Company | Washington | PA |
Finnaren & Haley Paint | Conshohocken | PA |
FIONESTA VALLEY CHEMICAL COMPANY | MAYBURG | PA |
Fire Department Repair Shop | Philadelphia | PA |
FIRE INCORPORATED | PITTSBURGH | PA |
FIRESTONE PLASTICS PLANT | POTTSTOWN | PA |
FIRESTONE TIRE & RUBBER | POTTSTOWN | PA |
Firestone Tire & Rubber Co. | Philadelphia | PA |
FIRESTONE TIRE AND RUBBER COMPANY | PHILADELPHIA | PA |
FIRESTONE TIRE AND RUBBER COMPANY | POTTSTOWN | PA |
FIRST FEDERAL SAVINGS & LOAN | SHARON | PA |
First National Bank | Philadelphia | PA |
FIRST NATIONAL BANK | ALLENTOWN | PA |
FIRST NATIONAL BANK – HAMILTON STREET | ALLENTOWN | PA |
FIRST NATIONAL BANK BUILDING | PITTSBURGH | PA |
FIRST PENNSYLVANIA BANKING & TRUST – OPER BLDG | PHILADELPHIA | PA |
First Presbyterian Church | Sharon | PA |
First Presbyterian Church | Morrisville | PA |
FIRST UNITED PRESBYTERIAN CHURCH | ALIQUIPPA | PA |
Firth Sterling | Mckeesport | PA |
FIRTH STERLING INC | PITTSBURGH | PA |
FIRTH STERLING PLANT | MCKEESPORT | PA |
Firth Sterling Steel Company | McKeesport | PA |
FIRTH STERLING, INCOPRORATED | MCKEESPORT | PA |
FIRTH STERLING, INCORPORATED | MCKEESPORT | PA |
FIRTH-STERLING STEEL COMPANY | MCKEESPORT | PA |
FIRTH-STERLING STEEL COMPANY | DEMMLER | PA |
FISCHER PORTER | WARMINSTER | PA |
FISHER BODY CORPORATION – Div. Of General Motors | FLEETWOOD | PA |
Fisher Scientific Company | Pittsburgh | PA |
Fitzpatrick Sheetmetal | Dubois | PA |
FITZSIMMONS JUNIOR HIGH SCHOOL – 26TH & CUMBERLAND | PHILADELPHIA | PA |
Flack Bros Inc | Harrisburg | PA |
FLAGG, STANLEY G. & COMPANY | POTTSTOWN | PA |
FLANNERY BOLT COMPANY | BRIDGEVILLE | PA |
FLEETWOOD METAL BODY COMPANY | FLEETWOOD | PA |
Fleischer Mills | Philadelphia | PA |
FLINN & DREFFEIN | YORK | PA |
FLOOR CHEMICAL CORP | PHILADELPHIA | PA |
FLORIG EQUIPMENT CO | CONSHOHOCKEN | PA |
FLORIG EQUIPMENT CO | CONSHOHECKEN | PA |
Fmc Corporation | Colmar | PA |
FMC CORPORATION, AMERICAN VISCOSE DIVISION | MEADVILLE | PA |
FOLLANSBEE BROTHERS COMPANY | PITTSBURGH | PA |
Folwell Bros. & John Bromley Sons | Philadelphia | PA |
FOOD DISTRIBUTION CENTER | PHILADELPHIA | PA |
Food Fair | Philadelphia | PA |
FOOD FAIR STORE – WAREHOUSE | PHILADELPHIA | PA |
FOOD FAIR STORES | PHILADELPHIA | PA |
FOOD FAIR STORES WHSE – BOILER ROOM | PHILADELPHIA | PA |
Foot Mineral Co. | Exton | PA |
Foote Mineral | Exton | PA |
FOOTE MINERAL COMPANY | EXTON | PA |
FOR SCRAP | PHILADELPHIA | PA |
FORBES STEEL COMPANY | CANONSBURG | PA |
Ford and Kendig Company | Conshohocken | PA |
FORD CITY FOUNDRY & MACHINE COMPANY | FORD CITY | PA |
FORD CITY FOUNDRY & MACHINE COMPANY | GRAFF STATION | PA |
Ford Motor Co. | Chester | PA |
FORD MOTOR COMPANY | GLASSMERE | PA |
FORD MOTOR COMPANY | PITTSBURGH | PA |
Ford Pitt Hotel | Pittsburg | PA |
FORGED STEEL WHEEL COMPANY | BUTLER | PA |
FORREST LAUNDRY | PHILADELPHIA | PA |
FORT BEDFORD INN | BEDFORD | PA |
FORT CHERRY SCHOOL | MCDONALD | PA |
FORT MARTIN POWER STATION | MAIDSVILLE | PA |
Fort Miffin – Naval Ammunition Depot, Central Heating Plant | PHILADELPHIA | PA |
FORT MIFFLIN | PHILADELPHIA | PA |
FORT PITT HOTEL | PITTSBURG | PA |
Fort Pitt Steel Casting | McKeesport | PA |
FORT PITT STEEL CASTING CO | MCKEESPORT | PA |
Fort Pitt Supply Company | Pittsburgh | PA |
FORTY-FORT COLLIERY | BENNETT | PA |
FOSECO INC. | MT. BRADDOCK | PA |
Foster – Wheeler | Oil City | PA |
FOSTER WHEELER CORPORATION | MOUNTAIN TOP | PA |
FOSTER WHEELER CORPORATION | MOUNTAINTOP | PA |
FOUNDERS HALL, RT. 322 | HERSHEY | PA |
Four Corners Powerhouses. | Avoca | PA |
FOUR STATES COAL COKE COMPANY | PITTSBURGH | PA |
FOX RUN APARTMENTS | PHILADELPHIA | PA |
FRANCIS BROTHERS & JELLETT | PHILADELPHIA | PA |
FRANCIS BROTHERS & JELLETT, INCORPORATED | PHILADELPHIA | PA |
FRANCISCO SUGAR COMPANY | PHILADELPHIA | PA |
Frank & Sedar Dept. Store | Philadelphia | PA |
FRANK FORD | PHILADELPHIA | PA |
Frank Goodheart & Sons Inc. | Lancaster | PA |
FRANK KNEELAND MACHINE COMPANY | PITTSBURGH | PA |
Frank Roberts & Sons Inc | Punxsutawney | PA |
FRANK ROMANO | PHILADELPHIA | PA |
FRANK SAMUELS (CE MINERALS) | VALLEY FORGE | PA |
Frankford Arsenal | Philadelphia | PA |
FRANKFORD ARSENAL – FOURTH FLOOR REAR | PHILADELPHIA | PA |
FRANKFORD ARSENAL, BUREAU OF ORDINANCE | PHILADELPHIA | PA |
FRANKFORD HOSPITAL | PHILADELPHIA | PA |
FRANKFORD JUNCTION | PHILADELPHIA | PA |
FRANKFORD METAL TREATING | PHILADELPHIA | PA |
FRANKFORD PLANT | PHILADELPHIA | PA |
Frankfort High School | Philadelphia | PA |
FRANKFORT METAL TREATING | PHILADELPHIA | PA |
FRANKLIN BUILDING SUPPLY | NASHVILLE | PA |
Franklin Lumber Co | New Alexandria | PA |
FRANKLIN MANUFACTURING COMPANY | STONEBORO | PA |
FRANKLIN MARSHALL COLLEGE | LANCASTER | PA |
FRANKLIN MINT | PHILADELPHIA | PA |
FRANKLIN MOTEL, 21ST AND SPRING GARDEN STS. | PHILADELPHIA | PA |
FRANKLIN QUALITY REFINING COMPANY | FRANKLIN | PA |
Franklin Smelting & Refining | Philadelphia | PA |
FRANKLIN SMELTING AND REF | PHILADELPHIA | PA |
Franklin Smelting Company | Concordville | PA |
FRANKLIN SMELTINGG AND REF | PHILADELPHIA | PA |
Franklin Steel Works | Franklin | PA |
FRANKLIN SUGAR | PHILADELPHIA | PA |
FRANKLIN SUGAR COMPANY | PHILADELPHIA | PA |
FRANKLIN SUGAR REFINING COMPANY | PHILADELPHIA | PA |
FRANKLIN TERRACE APARTMENTS | LANCASTER | PA |
FRANKLIN WORKS | JOHNSTOWN | PA |
FRANTZ DISTILLERS, INCORPORATED | BERLIN | PA |
Frantz Heating & Roof Company | Reading | PA |
FRAZEE LUMBER CO | UNIONTOWN | PA |
FRAZIER SIMPLEX, INC. | WASHINGTON | PA |
FREDERICK A. POTH | PHILADELPHIA | PA |
FREEBROOK CORPORATION | KITTANNING | PA |
Freedman Wholesale Lumber Co | Russellton | PA |
Freedom High School | Bethlehem | PA |
FREEDOM OIL WORKS COMPANY | FREEDOM | PA |
Freedom-Valvoline Oil Company | Freedom | PA |
FREEPORT BRICK CO | FREEPORT | PA |
FREEPORT BRICK COMPANY | FREEPORT | PA |
FREEPORT TERMINAL INC – LIQUID BULK TERMINAL | FREEPORT | PA |
FREEPORT WATER WORKS COMPANY – WATER PURIFICATION PLANT | FREEPORT | PA |
FREIGHT PITCALM PITTSBURGH, 28TH ST. POWERHOUSE, W. PHILADELPHIA STOCKYARD | PHILADELPHIA | PA |
FREIGHT PITCALM PITTSBURGH, WOODLAND AVENUE | PHILADELPHIA | PA |
FREIHOFER BAKING COMPANY | PHILADELPHIA | PA |
FREIHOFER VIENNA BAKING COMPANY | PHILADELPHIA | PA |
Frick Building | Pittsburg | PA |
FRICK BUILDING | PITTSBURGH | PA |
Friends School | Haverford | PA |
FRISKIES PET CARE COMPANY, INCORPORATED | ALLENTOWN | PA |
FROG SWITCH MANUFACTURING COMPANY | CARLISLE | PA |
FROG SWITCH MFG C | CARLISLE | PA |
FT. PITT BREWING COMPANY | SHARPSBURG | PA |
FT. PITT HOTEL | PITTSBURGH | PA |
FT. PITT MALLEABLE & GREY IRON COMPANY | MCKEES ROCKS | PA |
FT. PITT MALLEABLE IRON COMPANY | MCKEES ROCKS | PA |
G Ramsey & Sons | New Castle | PA |
G. E. INDUSTRIAL TUBE PLANT | SCRANTON | PA |
G. GARRETT & SONS | PHILADELPHIA | PA |
G. W. Blabon Co. | Philadelphia | PA |
G.A. Haupt, Jr. | Frackville | PA |
G.A.F. CORPORATION INDUSTRIAL PROD DIVISION | ERIE | PA |
G.B. MARKLE & COMPANY | GEDDA | PA |
G.B. MARKLE & COMPANY | JEDDO | PA |
G.B. MARKLE & COMPANY, HIGHLAND #5 COLL’Y | JEDDO | PA |
G.B. MARKLE AND COMPANY | JEOLOLO | PA |
G.B. MARKLE AND COMPANY, #4 COLLIERY | JEDDO | PA |
G.E. Metropolitan Edison – Titus Station turbine | Edison | PA |
G.K. GARRETT COMPANY | PHILADELPHIA | PA |
G.S.A. | HARRISBURG | PA |
G.W. ALLEN COMPANY | PHILADELPHIA | PA |
G.W. CHILDS PUBLIC LEDGER BUILDING | PHILADELPHIA | PA |
G.W. JOHNSON COMPANY | NEW CASTLE | PA |
GAF (Ruberoid) | Erie | PA |
GAF (Ruberoid) | Fullerton | PA |
GAF CORPORATION | PHILADELPHIA | PA |
GAF CORPORATION – 1139 LEHIGH AVENUE | FULLERTON | PA |
GAF CORPORATION, 1139 LEHIGH AVE. | FULLERTON | PA |
Gage Company | Titusville | PA |
Gair Box | Philadelphia | PA |
GALLERY CHEMICAL CORPORATION | CALLERY | PA |
Garden Spot Jr High | New Holland | PA |
GARDEN STATE TANNING COMP | FLEETWOOD | PA |
GARFIELD JUNIOR HIGH SCHOOL | JOHNSTOWN | PA |
GARLAND BROTHERS | PITTSBURGH | PA |
GARLAND NUT AND RIVET COMPANY | WEST PITTSBURGH | PA |
GARRICK THEATRE | PHILADELPHIA | PA |
Gateway Center Building | Pittsburgh | PA |
GATEWAY CENTER BUILDING #4 | PITTSBURGH | PA |
GATEWAY II BUILDING | PITTSBURGH | PA |
GAUTIER STEEL DEPARTMENT | JOHNSTOWN | PA |
GAYLORD COLLIERY | PLYMOUTH | PA |
GE | Erie | PA |
GE Plant | Philadelphia | PA |
Geare-Marston, Inc. | Philadelphia | PA |
GEM MANUFACTURING COMPANY | PITTSBURGH | PA |
GENERAL ACCEPTANCE CORPORATION – OFFICE BUILDING | ALLENTOWN | PA |
General American Transport Corporation | Sharon | PA |
GENERAL AMERICAN TRANSPORTATION CORPORATION | SHARON | PA |
GENERAL CABLE COMPANY | GLENWILLARD | PA |
GENERAL CARBIDE | GREENSBURG | PA |
GENERAL CHEMCIAL COMPANY | MARCUS HOOK | PA |
General Chemical | Marcus Hook | PA |
GENERAL CHEMICAL COMPANY | NEWELL | PA |
GENERAL CHEMICAL COMPANY | MARCUS HOOK | PA |
GENERAL CHEMICAL COMPANY DIVISION, ALLIED CHEMICAL CORPORATION AND DYE CORPORATION | NEWELL | PA |
GENERAL CHEMICAL COMPANY OF PENNSYLVANIA | PITTSBURGH | PA |
GENERAL CHEMICAL COMPANY, DELAWARE WORKS | MARCUS HOOK | PA |
GENERAL CHEMICAL DIVISION | NEWELL | PA |
GENERAL CIGAR FACTORY | MOUNT CARMEL | PA |
GENERAL COOPERAGE | PHILADELPHIA | PA |
GENERAL DYNAMICS CORPORATION | PHILADELPHIA | PA |
General Electric | Philadelphia | PA |
General Electric | Erie | PA |
GENERAL ELECTRIC | COURTNEY | PA |
GENERAL ELECTRIC | WEST MIFFLIN | PA |
GENERAL ELECTRIC – 30TH & WALNUT STREETS | PHILADELPHIA | PA |
GENERAL ELECTRIC – PENNSYLVANIA ELECTRIC TURBINE REPAIR | PITTSBURGH | PA |
GENERAL ELECTRIC – WAREHOUSE | PHILADELPHIA | PA |
General Electric Co | Erie | PA |
GENERAL ELECTRIC CO – BUILDING 64 | ERIE | PA |
GENERAL ELECTRIC CO – VOLTAGE SWGR. DEPT. | PHILADELPHIA | PA |
GENERAL ELECTRIC CO CAR | EAST STROUDSBURG | PA |
General Electric Co. | Philadelphia | PA |
GENERAL ELECTRIC CO. | ERIE | PA |
General Electric Company | Eria | PA |
General Electric Company | Erie | PA |
GENERAL ELECTRIC COMPANY | PHILADELPHIA | PA |
GENERAL ELECTRIC COMPANY | EAST STROUDSBURG | PA |
GENERAL ELECTRIC COMPANY | KING OF PRUSSIA | PA |
GENERAL ELECTRIC COMPANY | ALLENTOWN | PA |
GENERAL ELECTRIC COMPANY – 3198 CHESTNUT STREET | PHILADELPHIA | PA |
General Electric Company – Apparatus Pittsburgh Service Center | West Mifflin | PA |
GENERAL ELECTRIC COMPANY – BRIDGEVILLE GLASS PLANT | BRIDGEVILLE | PA |
GENERAL ELECTRIC COMPANY – BRIDGEVILLE GLASS PLANT – LAMP DEPARTMENT | BRIDGEVILLE | PA |
General Electric Company – Erie Works Power Plant | Erie | PA |
GENERAL ELECTRIC COMPANY – NEW KENSINGTON WORKS | NEW KENSINGTON | PA |
GENERAL ELECTRIC COMPANY – POWER PLANT | ERIE | PA |
GENERAL ELECTRIC COMPANY – POWER PLANT – TRANSPORTATION SYSTEMS DIVISION | ERIE | PA |
General Electric Plant | King of Prussia | PA |
General Electric Re-Entry Systems | PHILADELPHIA | PA |
General Electric Switchgear Plant | PHILADELPHIA | PA |
GENERAL ENGINEERING WORKS | PHILADELPHIA | PA |
GENERAL ENGINEERING WORKS, INCORPORATED | PHILADELPHIA | PA |
GENERAL HOSPITAL | EAST STROUDSBURG | PA |
General Ionics Corporation | Bridgeville | PA |
GENERAL MARKETING SERVICES | PITTSBURGH | PA |
GENERAL MOTORS CORP. – FISHER BODY DIVISION | PITTSBURGH | PA |
GENERAL MOTORS CORP. – W. MIFFLIN BORO | PITTSBURGH | PA |
GENERAL REFR CORP | PHILADELPHIA | PA |
General Refractories | Sproul | PA |
General Refractories Co. | Philadelphia | PA |
GENERAL SMELTING & REFINING COMPANY | PHILADELPHIA | PA |
GENERAL SMELTING AND REFINI | PHILADELPHIA | PA |
General Steel | Avonmore | PA |
GENERAL STEEL CASTING | Eddystone | PA |
GENERAL STEEL CASTINGS | BODYSTON | PA |
GENERAL STEEL CASTINGS CORPORATION | EDDYSTONE | PA |
GENERAL SUPPLY CO. | COPLAY | PA |
GENERAL TEXTILE MILLS | PHILADELPHIA | PA |
GENERAL TIRE & RUBBER CO – CHEMICALS & PLASTIC DIV. | JEANNETTE | PA |
General Tire & Rubber Company | Jeanette | PA |
Gene’s Garage | Philadelphia | PA |
GENTEX CORPORATION | CARBONDALE | PA |
Geo. F. Moilers Co. | Gettysburg | PA |
GEO. SALL METALS | PHILADELPHIA | PA |
GEORGE A. FULLER CONTRACTING COMPANY | PHILADELPHIA | PA |
GEORGE A. SMITH AND COMPANY | PHILADELPHIA | PA |
GEORGE E. FREDERICKS COMPANY | BETHAYRES | PA |
GEORGE F. UBER COMPANY | PHILADELPHIA | PA |
GEORGE HASLEY AND SONS | ALLEGHENY | PA |
GEORGE I. BODINE, TRUSTEE | PHILADELPHIA | PA |
GEORGE K. GARRETT COMPANY, INCORPORATED | PHILADELPHIA | PA |
GEORGE M. NEWHALL ENGINEERING COMPANY | PHILADELPHIA | PA |
GEORGE S. HARRIS | PHILADELPHIA | PA |
GEORGE S. HARRIS & SONS | PHILADELPHIA | PA |
GEORGE SALL METALS COMPANY | PHILADELPHIA | PA |
GEORGE SCHOOL | BUCKS COUNTY | PA |
GEORGE SCHOOL | GEORGE SCHOOL | PA |
GEORGE SINGLETON | SCRANTON | PA |
George V Hamilton Inc. | Mckees Rock | PA |
GEORGE V. CRESSON | PHILADELPHIA | PA |
GEORGE V. HAMILTON, INC. | MCKEES ROCKS | PA |
GEORGE W. BLABON COMPANY | NICETOWN, PHILADELPHIA | PA |
Georgia Pacific | Reading | PA |
GEORGIA PACIFIC PULP & PAPER | READING | PA |
GERACE HILL BOILER AND BUR | PHILADELPHIA | PA |
GERACE WILLIAM | PHILADELPHIA | PA |
GERARD TRUST BUILDING, 15TH AND MARKET STS. | PHILADELPHIA | PA |
GERMAN HOSPITAL | PHILADELPHIA | PA |
GERMANTOWN | PHILADELPHIA | PA |
GERMANTOWN DISTRICT HIGH SCHOOL | PHILADELPHIA | PA |
GERMANTOWN HOSPITAL | PHILADELPHIA | PA |
GERMANTOWN JEWISH CENTER | PHILADELPHIA | PA |
GERMANTOWN JUNCTION | PHILADELPHIA | PA |
Germantown YMCA | Philadelphia | PA |
GES; CIRCULATING FLUID BED PLANT | ERIE | PA |
Gettysburg College Chapel | Gettysburg | PA |
Gettysburg High School | Gettysburg | PA |
GIANT PORTLAND CEMENT COMPANY | EGYPT | PA |
GIBSON AND SONS, INCORPORATED | PHILADELPHIA | PA |
Gibson Electric Co | Delmont | PA |
GILBERT ASSOCIATES, INCORPORATED | READING | PA |
GIMBELS STORE | PHILADELPHIA | PA |
GIPSEY GROVE COLLIERY | DUNMORE | PA |
GIRARD COAL COMPANY | MT. CARMEL | PA |
GIRARD COAL COMPANY | PITTSTON | PA |
Girard College | Philadelphia | PA |
GIRARD ESTATE | PHILADELPHIA | PA |
GIRARD ESTATE PEOPLES BANK | PHILADELPHIA | PA |
GIRARD GOLLEGE | PHILADELPHIA | PA |
GIRARD POINT | PHILADELPHIA | PA |
GIRARD POINT LPG RECV & CAUSTIC REG | PHILADELPHIA | PA |
GIRARD REFINERY | PHILADELPHIA | PA |
GIRARD TRUST COMPANY | PHILADELPHIA | PA |
GIRARD TRUST COMPANY BUILDING | PHILADELPHIA | PA |
GIRARD TRUST COMPANY BUILDING – SOUTH PENN SQUARE | PHILADELPHIA | PA |
GIRLS NORMAL SCHOOL | PHILADELPHIA | PA |
Girton Mfg Co | Millville | PA |
GLASGOW IRON COMPANY | POTTSTOWN | PA |
GLASS CONTAINERS | KNOW | PA |
Glass Containers Corp | Knox | PA |
Glass Containers Corp | Marienville | PA |
Glass Containers Corp | Parker | PA |
Glass Containers Corporation | Parker | PA |
Glassine Paper Co. | West Conshohocken | PA |
GLASTIC CORP. | JEFFERSON | PA |
GLATFELTER P H CO | SPRING GROVE | PA |
Glatfelter P H Co. | Spring Grove | PA |
GLATFELTER PAPER COMPANY | SPRING GROVE | PA |
Glatfelter Paper Mill | Spring Grove | PA |
Glatfelter PH Co. | Spring Grove | PA |
Glen Alden Coal | Ashley | PA |
GLEN ALDEN COAL CO – Staton Colliery | ASHLEY | PA |
GLEN ALDEN COAL COMPANY | AUDENREID | PA |
GLEN ALDEN COAL COMPANY | BUTTONWOOD | PA |
GLEN ALDEN COAL COMPANY | NANTICOKE | PA |
GLEN ALDEN COAL COMPANY | PLYMOUTH | PA |
GLEN ALDEN COAL COMPANY | SOUTH WILKES BARRE | PA |
GLEN ALDEN COAL COMPANY, MAXWELL COLLIERY | SCRANTON | PA |
GLEN GERY SHADE BRICK | SHILLINGTON | PA |
GLEN GERY SHALE BRICK CORPORATION | HARRISBURG | PA |
GLEN GERY SHALE BRICK CORPORATION | WATSONTOWN | PA |
GLEN GERY SHALE BRICK CORPORATION | EPHRATA | PA |
GLEN SUMMIT | SPRING SIDING | PA |
GLEN SUMMIT HOTEL AND LAND COMPANY | GLEN SUMMIT | PA |
GLEN WILLOW ICE MANUFACTURING COMPANY, MANAYUNK | PHILADELPHIA | PA |
Glenn M. Baker Heating & Plumbing | Huntingdon | PA |
Glenshaw Glass Co | Glenshaw | PA |
GLENSHAW GLASS CO INC | GLENSHAW | PA |
GLIDDEN PROFESSIONAL PAINT – WAREHOUSE – CENTRE AVENUE | READING | PA |
GLIDDEN-DURKEE | JOHNSTOWN | PA |
Globe Automatic Sprinkler System | Philadelphia | PA |
GLOBE DYE WORKS COMPANY | PHILADELPHIA | PA |
GLOBE EYE WORKS | PHILADELPHIA | PA |
GLOBE PLASTIC CO | CROYDON | PA |
Globe Rubber Company | Philadelphia | PA |
GLOBE TICKET CO | PHILADELPHIA | PA |
GLP COMPANY | PHILADELPHIA | PA |
GLYCO CHEMICAL DIVISION | WILLIAMSPORT | PA |
GLYCO CHEMICALS DIVISION | WILLIAMSPORT | PA |
Gnex Inc | Erie | PA |
GOLD BOND BUILDING PRODUCTS | MILTON | PA |
GOLDSMITH BUILDING | PHILADELPHIA | PA |
GOLDSTEINS & SONS, INCORPORATED | PHILADELPHIA | PA |
GOOD SHEPHERD ROMAN CATHOLIC PARISH | CAMP HILL | PA |
GOOD SHEPHERD ROMAN CATHOLIC PARISH – CARLISLE PIKE | CAMP HILL | PA |
Goodyear | Pittsburgh | PA |
Goodyear | Grove City | PA |
GOODYEAR TIRE AND RUBBER COMPANY | CONSHOHOCKEN | PA |
GORDON STROBEL AND LAWREAU | PHILADELPHIA | PA |
GOVERNOR MIFFLIN SENIOR HIGH SCHOOL – SOUTH WAVERLY STREET | SHILLINGTON | PA |
GOVERNOR`S MANSION | HARRISBURG | PA |
GPU NUCLEAR CORPORATION – THREE MILE ISLAND POWER PLANT | HARRISBURG | PA |
Grace Mines | Cornwall | PA |
Grace Mines | Morgantown | PA |
GRAHAM FOUNDRY AND MACHINE COMPANY | MONONGAHELA | PA |
GRAHAM JEAN | MALVERN | PA |
Gram Asbestos Co | Erie | PA |
GRAMHAM JEAN | MALVERN | PA |
Grand Insulation | Philadelphia | PA |
GRAND UNION STORE | MORRISVILLE | PA |
GRANITE HOSIERY MILLS | SOUDERTON | PA |
Grant Towers | Duquesne | PA |
GRANTLEY ROAD, YORK COUTNY | YORK | PA |
GRANVIEW HOSPITAL | SELLERSVILLE | PA |
GRAPE PRODUCTS COMPANY | NORTH EAST | PA |
GRASSELLI POWDER COMPANY | WYSIDE | PA |
GRATERFORD STATE PENITENTIARY | GRATERFORD | PA |
GRATZ & GILLESPIE SCHOOL – 17TH & LUZERNE | PHILADELPHIA | PA |
GRATZ & GILLESPIE SCHOOL, 17TH & LUZERNE | PHILADELPHIA | PA |
GRAYS FERRY COGENERATION PROJECT – POWER PRODUCTION FACILITY | PHILADELPHIA | PA |
GRAYS FERRY ROAD AND CARPENTER STREET | PHILADELPHIA | PA |
Great Lakes Steel | Pittsburgh | PA |
GREAT SOUTHERN SHOPPERS MART | BRIDGEVILLE | PA |
Greater Pittsburgh Airport | Pittsburgh | PA |
Gree Inc | Erie | PA |
GREEN BAG CEMENT | NEVILLE ISLAND | PA |
Green Ridge Coal Company | Scranton | PA |
GREEN SPRING COMPANY | PHILADELPHIA | PA |
Green Tweed | North Wales | PA |
GREENCASTLE PACKING CO. | GREENCASTLE | PA |
Greengate Mall | Greensburg | PA |
Greensburg Central Catholic High School | Greensburg | PA |
GREENSBURG-CONNELLSVILLE COAL & COKE COMPANY | BURGETTSTOWN | PA |
GREENVILLE | GLENWOOD | PA |
GREENVILLE HOSPITAL | GREENVILLE | PA |
GREENVILLE STEEL CAR COMPANY | GREENVILLE | PA |
GREENVILLE STEEL CAR COMPANY PLANT | GREENVILLE | PA |
GREENVILLE TUBE DIV. EMERSON | GREENVILLE | PA |
GREENWICH COLLIERIES | BARNESBORO | PA |
GREYHOUND BUS TERMINAL | PHILADELPHIA | PA |
GRIFFIN ENAMUEL BRICK COMPANY | PEUKIOMEN | PA |
GRIMME COMBUSTION INC DON | PHILADELPHIA | PA |
GRIMMS | SHARON | PA |
GRINNELL COMPANY, INCORPORATED | COLUMBIA | PA |
Grinnell Corporation | Columbia | PA |
GRISWOLD WORSTED COMPANY | DARBY | PA |
GROCER’S SUGAR HOUSE | PHILADELPHIA | PA |
GROVER CLEVELAND PUBLIC SCHOOL | PHILADELPHIA | PA |
GROVER FARMS, INC | GROVER | PA |
GUADACANAL (USS) | PHILADELPHIA | PA |
GUARANTY SILK CORPORATION | NANTICOKE | PA |
GUARDIAN ENCR & DEV CO | CARNEGIE | PA |
Gulf (Chevron) Refinery, 1331 Unit | Philadelphia | PA |
GULF OIL CO | PITTSBURGH | PA |
Gulf Oil Company | Philadelphia | PA |
GULF OIL CORP | GIRARD POINT | PA |
GULF OIL CORP | PHILADELPHIA | PA |
GULF OIL CORP – #4 BOILER HOUSE | PHILADELPHIA | PA |
GULF OIL CORP – CHLOR BLDG #492 | GIRARD POINT | PA |
GULF OIL CORP – COOL HOUSE #491 & CHLOR BLDG #492 | GIRARD POINT | PA |
GULF OIL CORP – COOLING WATER PUMP HOUSE #491 | GIRARD POINT | PA |
GULF OIL CORP – COOLING WATER PUMP HOUSE #491 | PHILADELPHIA | PA |
GULF OIL CORP – GATE #24 | GIRARD POINT | PA |
GULF OIL CORP – GATE #24 | PHILADELPHIA | PA |
GULF OIL CORP – GATE 24 PENROSE AVE. AT LANIER – GIRARD POINT | PHILADELPHIA | PA |
GULF OIL CORP – GIRARD POINT | PHILADELPHIA | PA |
GULF OIL CORP – GIRARD POINT REFINERY | PHILADELPHIA | PA |
GULF OIL CORP – GIRARD POINT REFINERY – GATE #24 | PHILADELPHIA | PA |
GULF OIL CORP – GIRARD POINT REFINERY – SULPHUR UNIT | PHILADELPHIA | PA |
GULF OIL CORP – NUMBER 3 BOILER HOUSE | PHILADELPHIA | PA |
GULF OIL CORP – PHILADELPHIA REFINERY | PHILADELPHIA | PA |
GULF OIL CORP – PHILADELPHIA REFINERY – #4 BOILER HOUSE AREA | PHILADELPHIA | PA |
GULF OIL CORP – PHILADELPHIA REFINERY – 15# AND 200 LB. STEAM REPLACEMENT | PHILADELPHIA | PA |
GULF OIL CORP – PHILADELPHIA REFINERY – GATE NO. 24 | PHILADELPHIA | PA |
GULF OIL CORP – SULPHUR UNIT PHILADELPHIA REFINERY | PHILADELPHIA | PA |
GULF OIL CORP – VISA BREAKER UNIT | PHILADELPHIA | PA |
Gulf Oil Corp. Girard Point | Philadelphia | PA |
Gulf Oil Corporation | Girard Point | PA |
Gulf Oil Corporation | Philadelphia | PA |
Gulf Oil Corporation | Pittsburgh | PA |
Gulf Oil Refinery | Pittsburgh | PA |
GULF OIL REFINERY | PHILADELPHIA | PA |
Gulf Refinery | Philadelphia | PA |
Gulf Refining Company | Girard Point | PA |
GULF REFINING COMPANY | PITTSBURGH | PA |
GULF REFINING COMPANY (Subsid. Of Gulf Oil) | NEVILLE ISLAND | PA |
GULF RESEARCH & DEVELOPMENT | CHESWICK | PA |
GULF RESEARCH & DEVELOPMENT | HARMARVILLE | PA |
GULF RESEARCH & DEVELOPMENT | PITTSBURGH | PA |
GULF RESEARCH & DEVELOPMENT CO | PITTSBURGH | PA |
GULF RESEARCH AND DEVELOPMENT COMPANY | HARMARVILLE | PA |
GULF RESEARCH AND DEVELOPMENT COMPANY | PITTSBURGH | PA |
GULF RESEARCH AND DEVELOPMENT COMPANY LABORATORY | CHESWICK | PA |
GULPH WOOLEN MILLS | GULPH | PA |
GUN PLANT #269 | PHILADELPHIA | PA |
H A Diffenbach | Philadelphia | PA |
H H Robertson Co | Ambridge | PA |
H MILLER SPRING & MFG CO | PITTSBURGH | PA |
H MILLER SPRING AND MFG CO | PITTSBURGH | PA |
H. Blinderman & Son | Hellertown | PA |
H. Daroff and Sons | Philadelphia | PA |
H. H. HEINZ LAB. | PITTSBURGH | PA |
H. H. ROBERTSON COMPANY | AMBRIDGE | PA |
H. J. HEINZ CO – MECHANICAL STOCK ROOM | PITTSBURGH | PA |
H. J. HEINZ CO – PGH PLUMBING DEPARTMENT | PITTSBURGH | PA |
H. J. HEINZ CO – PITTSBURGH PLUMBING DEPT | PITTSBURGH | PA |
H. J. HEINZ CO – PITTSBURGH PLUMBING DEPT – DOCK NO 5 | PITTSBURGH | PA |
H. J. HEINZ CO – PLUMBING DEPARTMENT | PITTSBURGH | PA |
H. J. HEINZ CO – PLUMBING DEPARTMENT – DOCK NO. 5 | PITTSBURGH | PA |
H. J. HEINZ CO – STOCK ROOM | PITTSBURGH | PA |
H. J. HINES | PITTSBURGH | PA |
H. J. HINES – RESEARCH LABS. | PITTSBURGH | PA |
H. JULIUS KLINGLER AND COMPANY | BUTLER | PA |
H. KOPPERS COMPANY | NEW CASTLE | PA |
H. KOPPERS COMPANY | PITTSBURGH | PA |
H. O. Price Co. | Philadelphia | PA |
H. WESTHOFF- FLORIST | HOFFMAN STA. | PA |
H.C. FRICK COKE COMPANY | PITTSBURGH | PA |
H.C. FRICK COKE COMPANY | MONARCH | PA |
H.C. FRICK COKE COMPANY | ROWES RUN STATION | PA |
H.C. FRICK COKE COMPANY | LAMBERT | PA |
H.C. FRICK COKE COMPANY | RONCO | PA |
H.C. FRICK COKE COMPANY | MONMOUTH | PA |
H.C. FRICK COKE COMPANY | MT. PLEASANT | PA |
H.C. FRICK COKE COMPANY | UNITED STA | PA |
H.C. FRICK COKE COMPANY | WESTMORELAND COUNTY | PA |
H.C. FRICK COKE COMPANY | MT. PLEASANT STATION | PA |
H.C. FRICK COKE COMPANY | ROWES RUN | PA |
H.C. FRICK COKE COMPANY | UNION STATION | PA |
H.C. FRICK COKE COMPANY | BROWNFIELD | PA |
H.C. FRICK COKE COMPANY | CALUMET | PA |
H.C. FRICK COKE COMPANY | COLBERS MINE | PA |
H.C. FRICK COKE COMPANY | DEARTH MINES | PA |
H.C. FRICK COKE COMPANY | LEITH | PA |
H.C. FRICK COKE COMPANY | PHILLIPS MINE | PA |
H.C. FRICK COKE COMPANY | TROTTER | PA |
H.C. FRICK COKE COMPANY | WALNUT HILL | PA |
H.C. FRICK COKE COMPANY | YORK RUN | PA |
H.C. FRICK COKE COMPANY | BUTE STATION | PA |
H.C. Price Company | Philadelphia | PA |
H.D. JUSTI DIVISION | PHILADELPHIA | PA |
H.E. BROSIUS | KITTANNING | PA |
H.E. COLLIERY | BENNETT | PA |
H.F. WATSON | ERIE | PA |
H.H. Chrowder Company | Allentown | PA |
H.H. CURRY COMPANY | PITTSBURGH | PA |
H.H. ROBERTSON COMPANY | PITTSBURGH | PA |
H.H. ROBERTSON COMPANY | AMBRIDGE | PA |
H.J. HEINZ | PITTSBURGH | PA |
H.J. HEINZ AND COMPANY | PITTSBURGH | PA |
H.J. HEINZ CO | CHAMBERSBURG | PA |
H.J. HEINZ COMPANY | CHAMBERSBURG | PA |
H.J. HEINZ COMPANY | PITTSBURGH | PA |
H.J. HEINZ COMPANY | ALLEGHENY | PA |
H.K. CRIMMING TRADESMAN GRAIN ELEVATOR AND STORAGE COMPANY | PHILADELPHIA | PA |
H.K. CUMMINGS | PHILADELPHIA | PA |
H.K. HORTER AND COMPANY | PITTSBURGH | PA |
H.K. PORTER AND COMPANY | PITTSBURGH | PA |
H.K. PORTER BUILDING – GRANT STREET | PITTSBURGH | PA |
H.K. PORTER COMPANY | PITTSBURGH | PA |
H.K. PORTER, GRANT AND 6TH STS. | PITTSBURGH | PA |
H.L. EDWARDS AND COMPANY | PHILADELPHIA | PA |
H.P. KINSEY | EASTON | PA |
H.R. Curry | Sharpsburg | PA |
H.R. CURRY CO. | SHARPSBURG | PA |
H.R. CURRY COMPANY, INCORPORATED | PITTSBURGH | PA |
H.T. WATSON COMPANY | ERIE | PA |
H.W. BUTTERWORTH AND SONS | PHILADELPHIA | PA |
HADDEN STEEL COMPANY | CUPOLA | PA |
HAFLEIGH AND COMPANY | PHILADELPHIA | PA |
HAHN LOUIS & SONS | PITTSBURGH | PA |
HAHN LOUIS AND SONS | PITTSBURGH | PA |
Hahnemann Hospital | Philadelphia | PA |
HAHNEMANN HOSPITAL – BROAD & VINE STREETS | PHILADELPHIA | PA |
Hahnemann Medical College | Philadelphia | PA |
HAINSWORTH STEEL COMPANY | PITTSBURGH | PA |
HAJOCA BUILDING | PHILADELPHIA | PA |
HAJOCA BUILDING – GROUND FLOOR | PHILADELPHIA | PA |
HAJOCA CORP | LANSDALE | PA |
HAJOCA CORP | READING | PA |
HALE BUILDING | PHILADELPHIA | PA |
HALL AND GARRISON | PHILADELPHIA | PA |
HALLMOR CO. | BETHEL PARK | PA |
Halstead Metal Products, Inc. | Zelienople | PA |
HALTENBACK AND STEPHENS | ALLENTOWN | PA |
HAMILTON CONSTRUCTION | PHILADELPHIA | PA |
Hamilton George V Inc | Mckees Rock | PA |
HAMILTON WATCH COMPANY | LANCASTER | PA |
HAMMERMILL PAPER | LOCK HAVEN | PA |
Hammermill Paper Co | Lock Haven | PA |
HAMMERMILL PAPER CO. | ERIE | PA |
Hammermill Paper Company | Lock Haven | PA |
Hammermill Paper Company | Erie | PA |
HAMMERMILL PAPER COMPANY (k/n/a International Paper) | ERIE | PA |
Hammermill Paper Mill | Erie | PA |
HAMOT HOSPITAL | ERIE | PA |
Hamot Medical Center | Erie | PA |
HAMPTON BOILER PLANT | SCRANTON | PA |
HAMPTON MINES | SCRANTON | PA |
HANDSHUH JOE BUILDER | ROSLYN | PA |
HANDY & HARMAN TUBE COMPANY | NORRISTOWN | PA |
HANNASTOWN PLANT/JAMISON COAL AND COKE | HANNASTOWN | PA |
HANOVER POWER COMPANY – POWER PLANT | HANOVER | PA |
HAPPENSTALL COMPANY | PITTSBURGH | PA |
HAPPY DAY LAUNDRY | PITTSBURGH | PA |
HARBISON WALKER | WEST MIFFLIN | PA |
HARBISON WALKER | PITTSBURGH | PA |
Harbison Walker Refactories Co. | Pittsburgh | PA |
HARBISON WALKER REFRACTORIES | MT. UNION | PA |
HARBISON WALKER REFRACTORIES COMPANY | CHESTER, DELAWARE COUNTY | PA |
HARBISON-WALKER REFR. CO. | PITTSBURGH | PA |
HARBISON-WALKER REFRACTORIES CO | PITTSBURG | PA |
HARBISON-WALKER REFRACTORIES COMPANY | PITTSBURGH | PA |
HARBISON-WALKER REFRACTORIES COMPANY | WOODLAND | PA |
HARBISON-WALKER REFRACTORIES COMPANY | MT. UNION | PA |
Harbor Steel | New Castle | PA |
HARCAST CORPORATION | GLENOLDEN | PA |
HARDESTY INDUSTRIES | PHILADELPHIA | PA |
HARDING AVE. JR. HIGH SCHOOL | ALIQUIPPA | PA |
HARDINGE CO | YORK | PA |
HARDWARE & INDUSTRIAL TOOL | PHILADELPHIA | PA |
HARDWICK AND MAGEE COMPANY | PHILADELPHIA | PA |
HARLEIGH BROOKWOOD COAL COMPANY | MAHANOY PLANE | PA |
HARLEIGH BROOKWOOD COAL COMPANY | POTTSVILLE | PA |
Harleigh-Brookwood Colleries | PA | |
HARMAR COAL | HARMARVILLE | PA |
HARRISBURG AIRPORT | HARRISBURG | PA |
HARRISBURG FOUNDRY & MACHINE COMPANY | EASTON | PA |
Harrisburg Hospital | Harrisburg | PA |
HARRISBURG LIGHT AND POWER – HYDROELECTRIC PLANT | HARRISBURG | PA |
HARRISBURG STATE HOSPITAL – BREECHING BOILER HOUSE | HARRISBURG | PA |
Harrisburg Steel | Harrisburg | PA |
HARRISBURG WATER WORKS – MUNICIPAL PLANT | HARRISBURG | PA |
HARRISON BROTHERS | PHILADELPHIA | PA |
HARRISON BUILDING | PHILADELPHIA | PA |
HARRISON, FRAZIER & COMPANY | PHILADELPHIA | PA |
HARRISON, HAVEMEYER & COMPANY | PHILADELPHIA | PA |
HARRISON, HAVEMEYER & COMPANY, FRANKLIN REFINERY | PHILADELPHIA | PA |
HARRY A. PROCK CABINET COMPANY | GLENSIDE | PA |
HARRY C OLSON INC | MT LEBANON | PA |
Harry Ellenberger Lbr Co | Chicora | PA |
HARRY ROMAN | PITTSBURGH | PA |
Harshaw, Fuller, and Goodwin | Philadelphia | PA |
HARTMAN STEEL COMPANY | BEAVER FALLS | PA |
HARVEY AND COLLINS | AUSTIN | PA |
HARWOOD | HAZLETON | PENNSYLVANIA |
Harwood Electric Co. | Harwood | PA |
HARWOOD ELECTRIC COMPANY – POWER PLANT | HARWOOD | PA |
HARWOOD ELECTRIC COMPANY – STEAM PLANT | HARWOOD | PA |
HASELTON SEWAGE | WEST HAZELTON | PA |
Hatboro Plumbing & Heating | Hatboro | PA |
Hatfield Power Station | Masontown | PA |
Hatfield Power Station | Hatfield | PA |
HATFIELD POWER STATION – UNITS 1 & 2 | MASONTOWN | PA |
HATFIELD’S FERRY POWER STATION | MASONTOWN | PA |
HAUTO | NESQUEHONING | PENNSYLVANIA |
Haverford District High School | Haverford | PA |
Haverford High School | Haverford | PA |
HAVERFORD STATE MENTAL HOSPITAL | HAVERFORD | PA |
Hawk Run Acid Mine Water Treatment Plant | Hawk Run | PA |
Hays Army Depot | Pittsburgh | PA |
HAZARD MANUFACTURING COMPANY | WILKES BARRE | PA |
Hazel Atlas Glass Co. | Washington | PA |
HAZELTON BRICK CO | HAZELTON | PA |
Hazelton Brick Co. | Hazelton | PA |
Hazelton Plumbing Heating & Supply Company | Hazelton | PA |
Hazelton Sewage Plant | Hazelton | PA |
HAZELTON SEWAGE TREATMENT | HAZELTON | PA |
HAZELWOOD BYPRODUCTS – #2 FRACTIONATING COLUMN | PITTSBURGH | PA |
HAZELWOOD PLT BATT #2 | PITTSBURGH | PA |
HAZLE MOUNTAIN COAL COMPANY | CONYNGHAM | PA |
HAZLETON AUTHORITY (a/k/a Duplan Corp.) | HAZLETON | PA |
HAZLETON ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | HAZLETON | PA |
HAZLETON WATER COMPANY – HUDSONDALE PLANT | HUDSONDALE | PA |
HBG | Enola | PA |
HEALTH CENTER #9 – EAST CHELTEN AVENUE | PHILADELPHIA | PA |
HEATHERINGTON PLANT | FOLCROFT | PA |
HEEREN BROTHERS AND COMPANY | PITTSBURGH | PA |
HEIDELBERG COLLIERY | AVOCA | PA |
HEINTZ DIVISION OF KELSEY HAYES COMPANY | PHILADELPHIA | PA |
HEINTZ MANUFACTURING COMPANY | PHILADELPHIA | PA |
HEINZ U.S.A. | PITTSBURGH | PA |
HELFENSTEIN, LEWIS AND GREEN | PHILADELPHIA | PA |
HELLEN MILLS | BROCKPORT, ELK COUNTY | PA |
HELLWIG SILK DYING CO – Delaware Ave & Howell St. | WISSINOMING / PHILADELPHIA | PA |
HENDEL HAT COMPANY | READING | PA |
Henderson Sugar Refinery | Philadelphia | PA |
HENDRICK MANUFACTURING COMPANY | CARBONDALE | PA |
HENRY CLAY FURNACE | CHICKIES | PA |
HENRY COLLIERY | WILKES BARRE | PA |
Henry Disston & Sons | Tacony | PA |
HENRY DISSTON & SONS, INC. | PHILADELPHIA | PA |
HENRY LAUDENSLAGER | HARRISBURG | PA |
HENRY MCKEEN AND COMPANY | LEHIGH MILLS SOUTH EASTON | PA |
HENRY PHIPPS CENTRAL POWER PLANT | PITTSBURGH | PA |
HENRY PHIPPS MUTUAL TRAINING SCHOOL | ALLEGHENY | PA |
HEPPENSTALL | PITTSBURGH | PA |
HEPPENSTALL FORGE AND KNIFE COMPANY | PITTSBURGH | PA |
HEPPENSTALL OF PITTSBURGH | PITTSBURGH | PA |
HEPPENSTALL-EDDYSTONE CORPORATION | EDDYSTONE | PA |
Hercules Cement Company | Stockertown | PA |
Hercules Cement Corp. | Hercules | PA |
Hercules Cement Corp. | Stokertown | PA |
HERCULES CEMENT CORPORATION | STOCKERTOWN | PA |
Hercules Picco Resins | W. Elizabeth | PA |
HERCULES PLANT | DONORA | PA |
HERCULES POWDER CO – HIGGINS PLANT | PHILADELPHIA | PA |
Herman Goldner Co. (Quaker Rubber Co.) | Philadelphia | PA |
HERR GAS & OIL | SHAMOKIN | PA |
HERRIS ISLAND | PITTSBURGH | PA |
Herron Hill Pumping Station | Pittsburg | PA |
HERRS POTATO CHIPS, INCORPORATED | NOTTINGHAM | PA |
HERSHEY CHOCOLATE COMPANY | BERNVILLE | PA |
HERSHEY CHOCOLATE CORPORATION | HERSHEY | PA |
Hershey Chocolate Corporation, Lobby | HERSHEY | PA |
HERSHEY CHOCOLATE USA | HERSHEY | PA |
Hershey Food Company | Hershey | PA |
Hershey Foods Corp | Hershey | PA |
HERSHEY FOODS CORPORATION | HERSHEY | PA |
Hershey Medical Center, Hospital | Hershey | PA |
HERSHEY STATE POLICE TRAINING BARRI | HERSHEY | PA |
Hertz Supply Company Inc | Allentown | PA |
HESS BROTHERS WAREHOUSE | ALLENTOWN | PA |
HESS DEPARTMENT STORE | LANCASTER | PA |
HESS DEPARTMENT STORE, HARRISBURG | LANCASTER | PA |
HESS, INCORPORATED | SCRANTON | PA |
Heston High School | Philadelphia | PA |
HESTONVILLE MANTUA & FAIRMOUNT PASSENGER RAILROAD COMPANY | PHILADELPHIA | PA |
HETRICK AND WILSON | INDIANA | PA |
Hewlett Packard | Avendale | PA |
HEYL & PATTERSON, INCORPORATED | PITTSBURGH | PA |
HEYL AND PATTERSON | PITTSBURGH | PA |
Heyl Physicians Supply Co | Erie | PA |
HI LINE STEEL BOILER | MT. CARMEL | PA |
HIBBARD-RODMAN-ELY SAFE COMPANY | PLAINFIELD | PA |
HICKORY RIDGE COLLIERY | SHAMOKIN | PA |
HICKORY SWAMP COLLIERY | SHAMOKIN | PA |
HIGHLAND BREWING COMPANY | PITTSBURGH | PA |
HIGHLAND COLLIERY #5 | JEDDO | PA |
HIGHWAY MATERIALS | BRIDGEPORT | PA |
HILLSIDE COAL AND IRON COMPANY | MAYFIELD | PA |
HILLSIDE COAL AND IRON COMPANY | PITTSTON | PA |
HILTON HOTEL | LANCASTER | PA |
HILTON HOTEL | MCKEES ROCKS | PA |
HILTON HOTEL – EMPIRE BLDG – GATEWAY NO 3 | MCKEES ROCKS | PA |
HINCHLIFFE & KEENER | INDIANA CITY | PA |
Hinchliffe & Keener Inc. | Pittsburgh | PA |
Hinckliffe Keener | Pittsburgh | PA |
HIRAM SWANK & SONS | JOHNSTOWN | PA |
Hiram Swank’s Sons | Johnstown | PA |
Hiram Swank’s Sons | Irovone | PA |
Hk Porter Company | Pittsburgh | PA |
Hoetetters Supply Company | York | PA |
HOFFMAN BROS | PUNXSUTAWNEY | PA |
Hog Island Shipyard | Philadelphia | PA |
Holiday Inn | Philadelphia | PA |
Holland Furnace | Delaware County | PA |
Holland Furnace Company | PA | |
HOLLENBACH COLLIERY #2 | WILKES BARRE | PA |
HOLLENBACH COLLIERY #5 | WILKES BARRE | PA |
HOLMESBURG, TACONY AND FRANKFORD ELECTRIC RAILWAY COMPANY – POWER PLANT | PHILADELPHIA | PA |
HOLTWOOD | HOLTWOOD | PENNSYLVANIA |
Holy Ghost Convent and School | Pittsburgh | PA |
Holy Redeemer Hospital | Philadelphia | PA |
HOLY REDEEMER HOSPITAL | MEADOWBROOK | PA |
HOME ELECTRIC LIGHT AND STEAM HEATING COMPANY – POWER PLANT | TYRONE | PA |
HOMEOPATHIC HOSPITAL | PITTSBURGH | PA |
HOMEOPATHIC HOSPITAL FOR THE INSANE | EAST ALLENTOWN | PA |
HOMEOPATHIC STATE HOSPITAL | LEHIGH COUNTY | PA |
HOMEOPATHIC STATE HOSPITAL FOR THE INSANE | HANOVER TOWNSHIP | PA |
HOMER CITY | HOMER CITY | PENNSYLVANIA |
HOMER CITY – SAM PACE | CORAL | PA |
Homer City Power Plant | Homer City | PA |
Homer City Power Station | Indiana County | PA |
HOMER CITY POWER STATION | HOMER | PA |
HOMER CITY POWERHOUSE | HOMER CITY | PA |
Homer City Station – Power Plant | HOMER CITY | PA |
HOMESTEAD BOROUGH MUNICIPAL WATER WORKS | HOMESTEAD | PA |
HOMESTEAD HIGHLAND STREET RAILWAY COMPANY | HOMESTEAD | PA |
HOMESTEAD INDUSTRIES | CORAOPOLIS | PA |
HOMESTEAD STEEL WORKS | MUNHALL | PA |
HOMESTEAD STEEL WORKS | PITTSBURGH | PA |
HOMESTEAD WORKS | HOMESTEAD | PA |
HOMESTEAD WORKS | MUNHALL | PA |
Homestead Works US Steel | Homestead | PA |
HONEY BROOK COLLIERY #5 | AUDENRIED | PA |
HONEYWELL | FORT WASHINGTON | PA |
HONEYWELL, INCORPORATED | EMLENTON | PA |
HONEYWELL, INCORPORATED | T SMETHPORT | PA |
HOOD, BONBRIGHT AND COMPANY | PHILADELPHIA | PA |
HOOPES AND TOWNSEND | FT. WASHINGTON | PA |
HOOPES AND TOWNSEND COMPANY | FT. WASHINGTON | PA |
Hopeman Borthers | Chester | PA |
HOPKINSON HOUSE APARTMENTS | PHILADELPHIA | PA |
Hopper Paper Company | Reading | PA |
HORATIO B. HACKETT SCHOOL – EAST YORK STREET | PHILADELPHIA | PA |
Horlacher Brewing Company | Allentown | PA |
HORNER SCHOOL BUILDING | WILKINSBURG | PA |
HORSEHEAD INDUSTRIES | MONACA | PA |
Hosletter Supply Company | York | PA |
HOSPITAL FOR THE INSANE | RETREAT | PA |
HOSPITALITY MOTOR INN | PITTSBURGH | PA |
HOST MOTEL | LANCASTER | PA |
HOSTETTER SUPPLY CO. | YORK | PA |
HOTEL LAFAYETTE | PHILADELPHIA | PA |
HOUDRY PROCESS CORP. | LINWOOD | PA |
Houdry Processing Corp. | Linwood | PA |
HOUSE OF CORRECTION | PHILADELPHIA | PA |
HOUSE OF GOOD SHEPARD | READING | PA |
HOUSE OF THE GOOD SHEPHERD | PHILADELPHIA | PA |
HOWARD AXLE PLANT | HOMESTEAD | PA |
HOWARD REED | PHILADELPHIA | PA |
HOWE AND POLK | DANVILLE | PA |
HOWE AND SAMUEL | DANVILLE | PA |
HOWE SOUND COMPANY | LANCASTER | PA |
HOWE, BROWN & COMPANY | PITTSBURGH | PA |
HOWMET CORP | LANCATER | PA |
HOWMET CORP | LANCASTER | PA |
HOWMET CORP. | LANCASTER | PA |
HOWMET CORPORATION | LANCASTER | PA |
HUBBARD TOOL DIVISION | PITTSBURGH | PA |
Hubbs & Howe Co | Erie | PA |
HUCHINSON AND GUNTER PLANT | GREENSBURG | PA |
HUDSON COAL COMPANY | SCRANTON | PA |
HUDSON COAL COMPANY | OLYPHANT | PA |
HUDSON COAL COMPANY | CARBONDALE | PA |
Hudwood Irwin Company, Inc. | Huntingdon | PA |
HUFFMAN INDUSTRIES | SINKING SPRINGS | PA |
HUGH MCINNES REBECCA PAPER MILL | BRIDGEPORT | PA |
HUGHES AND GAUTHORP COMPANY | PITTSBURGH | PA |
HUGHES AND GAWTHROP | PITTSBURGH | PA |
HUGHES AND PATTERSON | PHILADELPHIA | PA |
HUGUS AND HACKE | PITTSBURGH | PA |
Hummelstown Water Supply | Harrisburg | PA |
HUNLOCK CREEK | LUZERNE COUNTY | PA |
Hunlock Creek Powerhouse | Hunlock Creek | PA |
Hunter Manufacturing | Levittown | PA |
Hunter Saw & Machine | Lawrenceville | PA |
HUNTING PARK AVENUE PLANT – MANUFACTURING PLANT | PHILADELPHIA | PA |
HUSSEY BUILDING | PITTSBURGH | PA |
Hussey Met | Leetsdale | PA |
Hussey Metals Company | Leetsdale | PA |
HUTCHINSON STREET STATION – COAL PLANT | PHILADELPHIA | PA |
HYDE HEATING CO | PITTSBURGH | PA |
HYDE PARK GAS COMPANY – GAS PLANT | SCRANTON | PA |
HYDRIL CO. | ROCHESTER | PA |
Hydro-Blast Corporation | Burnham | PA |
Hydro-Blast Corporation | Danville | PA |
Hydro-Blast Corporation | Erie | PA |
Hydro-Blast Corporation | Franklin | PA |
Hydro-Blast Corporation | Philadelphia | PA |
Hydro-Blast Corporation | Waynesboro | PA |
HYGEIA ICE COMPANY | PHILADELPHIA | PA |
HYGRADE FOOD PRODUCTS | PHILADELPHIA | PA |
HYGRADE FOODS | PHILADELPHIA | PA |
HYMAN BRODSKY & SON | PHILADELPHIA | PA |
I.T.E. Circuit Breaker Co. | Philadelphia | PA |
I.T.E. CIRCUIT BREAKER CO. | COLMAR | PA |
IBERIA SUGAR COOPERATIVE, INCORPORATED | NEW IBERIA | PA |
IBM BUIDLING | PITTSBURGH | PA |
IBM BUILDING, 17TH AND MARKET STS. | PHILADELPHIA | PA |
IBM BUILDING, BLVD. OF THE ALLIES | PITTSBURGH | PA |
IBM BUILDING, STANWIX ST. | PITTSBURGH | PA |
IBM OFFICE BLDG | PITTSBURGH | PA |
ILLINOIS STEEL COMPANY | PITTSBURGH | PA |
ILLINOIS ZINC COMPANY | PITTSBURGH | PA |
IMAGINING SYSTEMS | LATROBE | PA |
IMMACULATE CONCEPTION CATHEDRAL | PHILADELPHIA | PA |
Immaculate Conception School | Lock Haven | PA |
IMPERIAL LEATHER COMPANY | ALLEGHENY | PA |
IMPERIAL TYPE METALS | PHILADELPHIA | PA |
IMPERVIOUS VARNISH COMPANY | ROCHESTER | PA |
INDEPENDENCE HALL – 6TH & CHESTNUT STREETS | PHILADELPHIA | PA |
INDEPENDENT BREWING COMPANY | ALLEGHENY | PA |
INDEPENDENT BREWING COMPANY OF PITTSBURGH | PITTSBURGH | PA |
INDEPENDENT BRIDGE COMPANY | PITTSBURGH | PA |
INDEPENDENT MANUFACTURING COMPANY | PHILADELPHIA | PA |
INDIAN AFFAIRS BUILDING – CHESTNUT STREET | PHILADELPHIA | PA |
INDIANA COLD STORAGE AND ICE COMPANY | INDIANA | PA |
INDIANA COUNTY RAILWAYS COMPANY | HOMER | PA |
INDIANA COUNTY RAILWAYS COMPANY | PUNXSUTAWNEY | PA |
INDIANA ERIE COMPANY | INDIANA | PA |
INDIANA HOSPITAL | INDIANA | PA |
INDIANA PROVISION COMPANY | INDIANA | PA |
Industrial Air Conditioning | Philadelphia | PA |
INDUSTRIAL COLD STORAGE AND WAREHOUSE COMPANY | PHILADELPHIA | PA |
INDUSTRIAL DIV. WAREHOUSE | PITTSBURGH | PA |
INDUSTRIAL EQUIPMENT COMPANY | SCRANTON | PA |
Industrial Gasket & Shim Co | Meadow Lands | PA |
Industrial Insulation Inc. | Pittsburgh | PA |
Industrial Steel Corp. | Carnegie | PA |
INDUSTRIAL VALLEY BANK – 17TH & MARKET STREETS | PHILADELPHIA | PA |
INGERSOLL BAND CO | ATHENS | PA |
INGERSOLL RAND COMPANY | EASTON | PA |
INGERSOLL RAND COMPANY | PITTSBURGH | PA |
INGERSOLL SERGEANT DRILL COMPANY | EASTON | PA |
INGERSOLL SERGEANT DRILL COMPANY | ODENNELDER, EASTON | PA |
INGERSOLL-RAND COMPANY | ATHENS | PA |
INGRAM RICHARDSON COMPANY | BEAVER FALLS | PA |
INLAND CONTAINER CORPORATION | PHILADELPHIA | PA |
INLAND PRODUCTS | PITTSBURG | PA |
INLAND PRODUCTS, INCORPORATED | PITSBURGH | PA |
Inn of America | New Stanton | PA |
Inolex Chemical | Philadelphia | PA |
INOLEX CHEMICAL COMPANY | STPHILADELPHIA | PA |
INSOLITE REFRACTORIES CO | PITTSBURGH | PA |
Insulation Sales Co | Erie | PA |
Insulation Sales Company | Neville Island | PA |
Insulation Sales Company | Pittsburgh | PA |
Insuldeck Corp | Bath | PA |
Interlake Iron Co. | Erie | PA |
Internal Revenue Service Building | Philadelphia | PA |
International Boiler Works | East Stroudsburg | PA |
International Boiler Works | E Stroudsburg | PA |
INTERNATIONAL BOILER WORKS | EAST STROUDABURG | PA |
INTERNATIONAL BOILER WORKS CO | STROUDSBURG | PA |
INTERNATIONAL BUSINESS MACHINES (IBM) BUILDING – BATHGATE ROAD | BETHLEHEM | PA |
INTERNATIONAL BUSINESS MACHINES (IBM) BUILDING – MARKET STREET | PHILADELPHIA | PA |
INTERNATIONAL MOTOR COMPANY | ALLENTOWN | PA |
INTERNATIONAL MOTOR COMPANY | EAST PENN JUNCTION | PA |
International Paper | Alden | PA |
INTERNATIONAL PAPER CO. | LOCK HAVEN | PA |
International Paper Company | Erie | PA |
INTERNATIONAL PAPER COMPANY | YORK HAVEN | PA |
INTERNATIONAL PAPER COMPANY | ALDAN BOROUGH | PA |
INTERNATIONAL PAPER COMPANY | TOWANDA | PA |
INTERNATIONAL PAPER COMPANY, CONTAINER DIVISION | WALTZ MILLS | PA |
International Pipe and Ceramics Corp. | Emmaus | PA |
INTERNATIONAL SALT COMPANY – HEADQUARTERS BUILDING – ROUTE 307 AND COUNTRY CLUB ROAD | CLARKS SUMMIT | PA |
INTERNATIONAL SERVICE IND. | SCRANTON | PA |
International Shoe Company – Frankford Tannery | Philadelphia | PA |
INTERSTATE RAILWAYS COMPANY | PHILADELPHIA | PA |
Ionics Corp | Bridgeville | PA |
IONICS MANUFACTURING PLANT | BRIDGEVILLE | PA |
IOWA BARB WIRE COMPANY | ALLENTOWN | PA |
IOWA BARBED WIRE COMPANY | ALLENTOWN | PA |
IRON CITY HEATING COMPANY | PITTSBURGH | PA |
IRON CITY IMP. COMPANY | PITTSBURGH | PA |
IRON CITY INDUSTRIAL CLEANING CORP. | PITTSBURGH | PA |
IROQUOIS APARTMENTS | PITTSBURGH | PA |
Irvin Works | West Mifflin | PA |
IRWIN WORKS | IRWIN | PA |
ISABELLA FURNACE COMPANY | ETNA | PA |
ISIMBEL BROTHERS STABLE | PHILADELPHIA | PA |
ISLAND PETROLEUM COMPANY | NEVILLE ISLAND | PA |
ISLAND PETROLEUM COMPANY, NEVILLE ISLAND | PITTSBURGH | PA |
ITE CIRCUIT BREAKER COMPANY | PHILADELPHIA | PA |
ITT Fluid Products | Lancaster | PA |
IVB BUILDING | PHILADELPHIA | PA |
Ivor J Lee Co | Sharon | PA |
IVY ROCK FARM | CONSHOHOCKEN | PA |
J & L STEEL | ALIQUIPPA | PA |
J & L STEEL | LABELLE | PA |
J & L STEEL CORP | HAZELWOOD | PA |
J & L STEEL CORP – ALIQUIPPA WORKS | ALIQUIPPA | PA |
J & L STEEL CORP – PITTSBURGH WORKS | PITTSBURGH | PA |
J B Eurell Company | Lansdowne | PA |
J B VAN SCIVER | ABINGTON | PA |
J D GROVER AND SONS | PHILADELPHIA | PA |
J&L Steel | Aliquippa | PA |
J&L Steel | Ambridge | PA |
J&L/LTV Steel | Aliquippa | PA |
J. AND C. NICHOLSON TRUSTEE | ELWOOD CITY | PA |
J. AND L. SOUTHSIDE | SOUTHSIDE | PA |
J. AND R. MEILY | LEBANON | PA |
J. AND W. YEWDALL | PHILADELPHIA | PA |
J. B. VEATCH – TRUCK STATION 103 | ALIQUIPPA | PA |
J. BISHOP AND CO | MALVERN | PA |
J. E. Baker Company | York | PA |
J. H. & C. K. Eagle | Shamokin | PA |
J. LANGDON AND COMPANY INCORPORATED | SHAMOKIN | PA |
J. MUNDELL AND COMPANY | PHILADELPHIA | PA |
J. WOOD COMPANY | CONSHOCKEN | PA |
J.A. DOUGHERTY’S SONS | PHILADELPHIA | PA |
J.A. KOHLHEPP SONS | DU BOIS | PA |
J.B. ELLISON AND SONS | PHILADELPHIA | PA |
J.B. LIPPINCOTT BUILDING | PHILADELPHIA | PA |
J.B. SWAYNE & SON | KENNETT SQUARE | PA |
J.C. GRAHAM | PHILADELPHIA | PA |
J.C. GRAHAM AND COMPANY | PHILADELPHIA | PA |
J.C. GREENWOOD ASSOCIATION, INCORPORATED | BELLE VERNON | PA |
J.C. GROVER & SONS | PHILADELPHIA | PA |
J.C. KLAUDER | PHILADELPHIA | PA |
J.C. KLAUDER ESTATE, 19 NORTH 6TH ST. | PHILADELPHIA | PA |
J.C. MCDOWELL | PITTSBURGH | PA |
J.D. FERRY COMPANY | HARRISBURG | PA |
J.D. GROVER & SONS | PHILADELPHIA | PA |
J.D. MORRISSEY, INCORPORATED | PHILADELPHIA | PA |
J.E. Baker Company | Billmayer | PA |
J.E. BAKER COMPANY | YORK | PA |
J.E. PATTERSON | WILKES BARRE | PA |
J.E. PATTERSON AND COMPANY | PITTSTON | PA |
J.E. POTTER AND COMPANY | PHILADELPHIA | PA |
J.F. BETZ AND SONS | PHILADELPHIA | PA |
J.F. BUCHANAN AND COMPANY | PHILADELPHIA | PA |
J.F: BETZ AND SON | PHILADELPHIA | PA |
J.G. BRILL AND COMPANY | PHILADELPHIA | PA |
J.G. BRILL COMPANY | GRAYS FERRY | PA |
J.G. BRILL COMPANY | PHILADELPHIA | PA |
J.G. WHITE AND COMPANY | PALO ALTO | PA |
J.H. AND C.K. EAGLE | SHAMOKIN | PA |
J.H. AND C.K. EAGLE COMPANY | SHAMOKIN | PA |
J.H. MICHENER AND COMPANY | PHILADELPHIA | PA |
J.H. STERNBERGH. AND SON | READING | PA |
J.H. WILCOX | CHESTER | PA |
J.J. DE KINDER | PHILADELPHIA | PA |
J.J. FELIN COMPANY, INCORPORATED | NICETOWN | PA |
J.J. VANDERGRIFT | PITTSBURGH | PA |
J.J. White Company | Marcus Hook | PA |
J.K. MOSSER COMPANY | NOXEN | PA |
J.K. WRIGHT AND COMPANY | PHILADELPHIA | PA |
J.P. AUSTIN ASSOCIATES INC/A-TOPS VERMICULITE – EXFOLIATION FACILITY | BEAVER FALLS | PA |
J.P. MALONEY | SCRANTON | PA |
J.S. AND T. ELKINTON | PHILADELPHIA | PA |
J.S. WENTZ | MAUCH CHUNK | PA |
J.T. BENNETT COMPANY | PHILADELPHIA | PA |
J.W. ARROTT | PITTSBURGH | PA |
J.W. IVORY COMPANY | PHILADELPHIA | PA |
J.W. KOCH COMPANY | HARRISBURG | PA |
J.W. REX COMPANY | LANSDALE | PA |
JACOB H. BOWERS | TRAPPE | PA |
JACOBY HEATING INC | HARRISBURG | PA |
JACOBY HEATING, INCORPORATED | HARRISBURG | PA |
JAMES C. MORRISSEY | PHILADELPHIA | PA |
JAMES IRWIN AND COMPANY | PITTSBURGH | PA |
JAMES L. STUART | PITTSBURGH | PA |
JAMES LEES AND SONS COMPANY | BRIDGEPORT | PA |
JAMES MARTIN AND COMPANY | PHILADELPHIA | PA |
JAMES MCKAY COMPANY | MCKEES ROCKS | PA |
JAMES P. WOOD HEATING COMPANY | PHILADELPHIA | PA |
JAMES REED POWER STREET | PITTSBURGH | PA |
James S. Wilson Junior High School | Erie | PA |
JAMES WOLFENDEN | LOCK HAVEN | PA |
JAMESON COAL AND COKE COMPANY | GREENSBURG | PA |
JAMESON COAL AND COKE COMPANY | CRAB TREE | PA |
JAMISON COAL AND COKE COMPANY | GREENSBURG | PA |
JAMISON COAL AND COKE COMPANY | PITTSBURGH | PA |
JAMISON COAL AND COKE COMPANY | FORBES ROAD | PA |
JAMISON COAL AND COKE COMPANY | HANNASTOWN | PA |
JAMISON COAL AND COKE COMPANY | CRAB TREE | PA |
JAMISON COAL AND COKE COMPANY | LUXOR | PA |
Janney Cylinder | Philadelphia | PA |
JANNISON COAL AND COKE COMPANY | FORBES ROAD | PA |
JAS. BONAR AND COMPANY | PITTSBURGH | PA |
JAUNTY FABRIC CORPORATION | SCRANTON | PA |
JAUNTY SILK COMPANY INCORPORATED | SCRANTON | PA |
JAWOOD LUKENS | CONSHOHOCKEN | PA |
JAWOOD LUKENS | EAST CONSHOHOCKEN | PA |
JEANNETTE GLASS COMPANY | JEANNETTE | PA |
Jeannette Shade & Novelty Company | Jeannette | PA |
JEDDO HIGHLAND COAL COMPANY | JEDDO | PA |
JEFFERSON & CLEARFIELD COAL & IRON COMPANY | PUNXSUTAWNEY | PA |
JEFFERSON & CLEARFIELD COAL & IRON COMPANY | ERNEST | PA |
JEFFERSON COAL COMPANY | COAL GLEN | PA |
JEFFERSON HOSPITAL | PHILADELPHIA | PA |
JENNY CYLINDER | PHILADELPHIA | PA |
JERE WOODRING AND COMPANY | HAZELTON | PA |
JERE WOODRING AND COMPANY | HAZLETON | PA |
JERMYN AND COMPANY | PITTSTON | PA |
JERMYN BOILER HOUSE | JERMYN | PA |
JERSEY CEREAL FOOD COMPANY | IRWIN | PA |
JERSEY SHORE STEEL COMPANY | AVIS | PA |
JESSE W. STARR JR. | PHILADELPHIA | PA |
Jessop Steel | Washington | PA |
JESSOP STEEL CO | WASHINGTON | PA |
JESSOP STEEL COMPANY | WASHINGTON | PA |
JESSOP STEEL CORPORATION | WASHINGTON | PA |
JESSOP STEEL PLANT | WASHINGTON | PA |
JESSOPS STEEL COMPANY | WASHINGTON | PA |
JESSUP AND MOORE, CHESTER MILLS | MODENA | PA |
JETRONIC INDUSTRIES | PHILADELPHIA | PA |
JEWISH HOME FOR THE AGED | PHILADELPHIA | PA |
JEWISH HOSPITAL | PHILADELPHIA | PA |
Jh France Refractories Company | Snow Shoe | PA |
JNO. A. RIGG | PHILADELPHIA | PA |
JNO. F. WILCOX | PITTSBURGH | PA |
JOEL J. BAILEY AND COMPANY | PHILADELPHIA | PA |
JOHN A. RIGG | READING | PA |
JOHN A. RIGG | LEBANON | PA |
JOHN B. STETSON | PHILADELPHIA | PA |
JOHN B. STETSON COMPANY | PHILADELPHIA | PA |
JOHN BARTRAM SENIOR HIGH SCHOOL | PHILADELPHIA | PA |
JOHN BISTELSON COMPANY | PHILADELPHIA | PA |
JOHN BOOMLEY AND SONS | PHILADELPHIA | PA |
JOHN BROMLEY AND SONS | PHILADELPHIA | PA |
JOHN BROWN’S SONS | PHILADELPHIA | PA |
JOHN COHEN CLOTHES | PHILADELPHIA | PA |
John David Company | Philadelphia | PA |
JOHN DIMLING | PITTSBURGH | PA |
JOHN F. CASEY, INCORPORATED, PULLMAN STANDARD | BUTLER | PA |
JOHN H. WEBSTER ELEMENTARY SCHOOL | PHILADELPHIA | PA |
John Harrison Company | Pittsburgh | PA |
JOHN LANG | PHILADELPHIA | PA |
JOHN LANG PAPER COMPANY | PHILADELPHIA | PA |
JOHN M GRASSE ELEM SCHOOL | HILLTOWN | PA |
JOHN MOFFET ELEMENTARY SCHOOL – COLUMBIA & MASHER STREETS | PHILADELPHIA | PA |
JOHN MUNDELL AND COMPANY | PHILADELPHIA | PA |
JOHN POTERO COMPANY | PHILADELPHIA | PA |
JOHN S. PEPSON | UNIONTOWN | PA |
JOHN TACK & SONS | BUTLER | PA |
John Tearney Heating & Plumbing | Lancaster | PA |
JOHN TYSON | MOODVILLE | PA |
JOHN VEITH COLLIERY | MINERSVILLE | PA |
JOHN WANAMAKER DEPARTMENT STORE | PHILADELPHIA | PA |
John Wanamaker Store | King of Prussia | PA |
John Wanamakers | Philadelphia | PA |
John Wanamakers Dept. Store | Philadelphia | PA |
JOHN WOOD COMPANY | CONSHOHOCKEN | PA |
JOHN WOOD MANUFACTURING COMPANY | CONSHOHOCKEN | PA |
JOHN YEWDALL KEYSTONE MILLS | PHILADELPHIA | PA |
JOHN ZIMMERMANN AND SONS | PHILADELPHIA | PA |
JOHNNYS GAS STATION | AMBRIDGE | PA |
Johns Manville | Pittsburgh | PA |
JOHNS MANVILLE PRODUCTS COMPANY | ZELEINOPLE | PA |
JOHNSON AND COMPANY | JOHNSTOWN | PA |
JOHNSON COMPANY | JOHNSTOWN | PA |
JOHNSTON THE FLORIST | IRWIN | PA |
Johnstown Water Authority | Johnstown | PA |
JOHNSTOWN WATER COMPANY – WATER PLANT | JOHNSTOWN | PA |
JONATHAN RING AND SON | PHILADELPHIA | PA |
JONES & LABORLIN STEEL | PITTSBURGH | PA |
JONES & LAUGHLIN (J&L) STEEL | PITTSBURGH | PA |
Jones & Laughlin Steel | Hazelwood | PA |
Jones & Laughlin Steel | Hazelwood-Pittsburgh | PA |
Jones & Laughlin Steel | Braddock | PA |
Jones & Laughlin Steel | Philadelphia | PA |
JONES & LAUGHLIN STEEL | PITTSBURGH | PA |
JONES & LAUGHLIN STEEL | ALIQUIPPA | PA |
Jones & Laughlin Steel Co | Aliquippa | PA |
Jones & Laughlin Steel Co | Pittsburgh | PA |
Jones & Laughlin Steel Co. | Pittsburgh | PA |
JONES & LAUGHLIN STEEL COMPANY | ALIQUIPPA | PA |
JONES & LAUGHLIN STEEL COMPANY | PITTSBURGH | PA |
JONES & LAUGHLIN STEEL COMPANY – ELIZA FURNACE PLANT | VINTONDALE | PA |
Jones & Laughlin Steel Company (N/K/A LTV Steel) | Pittsburgh | PA |
Jones & Laughlin Steel Company (N/K/A LTV Steel) | Aliquippa | PA |
JONES & LAUGHLIN STEEL CORP | Vestaburg | PA |
JONES & LAUGHLIN STEEL CORP – SOUTH SIDE | PITTSBURGH | PA |
JONES & LAUGHLIN STEEL CORP. | PITTSBURGH | PA |
Jones & Laughlin Steel Corp. (Coke Oven Plant) | Aliquippa | PA |
Jones & Laughlin Steel Corp. (Eliza Furnaces) | Pittsburgh | PA |
Jones & Laughlin Steel Corporation | Aliquippa | PA |
Jones & Laughlin Steel Corporation | Hazelwood | PA |
Jones & Laughlin Steel Corporation, Southside Works | Pittsburgh | PA |
JONES & LAUGHLIN STEEL, PITTSBURGH WORKS, FOUNDRY BRICK SHED | PITTSURGH | PA |
JONES AND LAUGHLIN | PITTSBURGH | PA |
Jones and Laughlin Steel | Alquippa | PA |
JONES AND LAUGHLIN STEEL | ALIQUIPPA | PA |
JONES AND LAUGHLIN STEEL – ALIQUIPPA WORKS | ALIQUIPPA | PA |
Jones and Laughlin Steel Co. – 2942 Second Avenue – Station No. 63 | Pittsburgh | PA |
Jones and Laughlin Steel Co. – South Side Works – Station #52-2332 | Pittsburgh | PA |
JONES AND LAUGHLIN STEEL COMPANY | PITTSBURGH | PA |
JONES AND LAUGHLIN STEEL COMPANY | WOODLAWN | PA |
JONES AND LAUGHLIN STEEL COMPANY | WOODLAND | PA |
JONES AND LAUGHLIN STEEL COMPANY – SOUTH SIDE WORKS | PITTSBURGH | PA |
Jones And Laughlin Steel Corp. | Aliquippa | PA |
JONES AND LAUGHLIN STEEL CORPORATION | PITTSBURGH | PA |
JONES AND LAUGHLIN STEEL CORPORATION | WOODLAWN | PA |
JONES AND LAUGHLIN STEEL CORPORATION | ELIZA | PA |
JONES AND LAUGHLIN STEEL CORPORATION | ALIQUIPPA | PA |
JONES AND LAUGHLIN STEEL CORPORATION SOLO WORKS | PITTSBURGH | PA |
JONES AND LAUGHLIN, LIMITED | PITTSBURGH | PA |
JONES JUNIOR HIGH SCHOOL- ANN & MEMPHIS STREETS | PHILADELPHIA | PA |
JORDAN PARK APARTMENTS – BOILER HOUSE | FULLERTON | PA |
JOSEPH AND THROPP | EARLSTON | PA |
JOSEPH BERLINER COMPANY | PHILADELPHIA | PA |
JOSEPH CAMPBELL PET FOODS | LIME RIDGE | PA |
JOSEPH HEACOCK | WYNCOTE | PA |
JOSEPH HORNE AND COMPANY | PITTSBURGH | PA |
JOSEPH R. FOSTER SONS | PHILADELPHIA | PA |
JOSEPH S. FINCH & CO. | SCHENLY | PA |
JOSEPH S. FINCH AND COMPANY | SCHENLEY | PA |
JOSEPH S. FINCH AND COMPANY | SCHENELY | PA |
JOSEPH S. FINCH COMPANY | PITTSBURGH | PA |
JOSEPHINE FURNACE AND COKE COMPANY | JOSEPHINE | PA |
JOY MANUFACTURING | NEW PHILADELPHIA | PA |
JOY MANUFACTURING | FRANKLIN | PA |
JOY MANUFACTURING | RENO | PA |
Jp Austin Associated Inc | Pittsburgh | PA |
Jp Austin Associated Inc | Homestead | PA |
JSTA. #30 – S. S. BOILER HSE. | PITTSBURGH | PA |
JULIUS KAYSER COMPANY – CROWN SILK MILL | BANGOR | PA |
JUNIATA COMPANY | MUFFLINTOWN | PA |
JUNIATA FURNACE AND FOUNDRY COMPANY | NEWPORT | PA |
JUNIOR HIGH SCHOOL | ALIQUIPPA | PA |
JUSTI DIVISION W. GOLD REF. | PHILADELPHIA | PA |
K & L REFRACTORIES | ERIE | PA |
K & L Refractory Service | Erie | PA |
Kaiser Engineers | Bristol | PA |
KAISER JOB | BUTLER | PA |
KAISER METAL | BRISTOL | PA |
KAMAK MILLS | KULPMONT | PA |
Kane Area Junior High School | Kane | PA |
KANE SCHOOL – 26TH & JEFFERSON | PHILADELPHIA | PA |
KANMAK MILLS | KULPMONT | PA |
KARL LIEBERKNECHT INC. (a/k/a Rosedale Knitting Mills) | READING | PA |
KARL R.H. KNAPP, INCORPORATED, 1015 PERALTA ST. | PITTSBURGH | PA |
KARL R.H. KNAPP, INCORPORATED, THOMAS ST. AND MCKEES AVE. | MCKEES ROCK | PA |
Katz Underwear Co. | Honesdale | PA |
Kaufman Building | Pittsburgh | PA |
KAUFMANN’S DEPARTMENT STORE | PITTSBURGH | PA |
KAUFMANS DEPARTMENT STORE | PITTSBURGH | PA |
KAWECKI BERYLCO | HAZELTON | PA |
KAWECKI BERYLCO IND. | READING | PA |
KAWECKI BERYLCO IND. | TEMPLE | PA |
KAWECKI BERYLCO INDUSTRIES, INCORPORATED | BOYERTOWN | PA |
KAWECKI BERYLCO PLANT | HAZLETON | PA |
KAWECKI CHEMICAL COMPANY | BOYERTON | PA |
KAWECKI CHEMICAL COMPANY | READING | PA |
KAWECKI CHEMICAL COMPANY | BOVERTOWN | PA |
KAWECKI CHEMICAL COMPANY | HOOVERTOWN | PA |
KAWECKI CHEMICAL COMPANY | BOYERTOWN | PA |
KAWECKI CHEMICAL COMPANY | RUPERTOWN | PA |
KAWEENER CO. | BLOOMSBURG | PA |
KAWEENER CO. | HARRISBURG | PA |
KAWNEER CO INC | BLOOMSBURG | PA |
Keasbey & Mattison | Ambler | PA |
Keasbey & Mattison Plant | Ambler | PA |
KEASBEY AND MATTISON | PHILADELPHIA | PA |
KEASBEY AND MATTISON COMPANY | AMBLER | PA |
KEASBY & MATTISON | AMBLER | PA |
KEEBLER BISCUITS COMPANY | PHILADELPHIA | PA |
KEENAN CO | PHILADELPHIA | PA |
KEENAN COMPANY | PHILADELPHIA | PA |
Keene Corporation | Valley Forge | PA |
KEITH’S THEATRE | PHILADELPHIA | PA |
KELLER CREAMERY | HARLEYSVILLE | PA |
Kelloggs | Lancaster | PA |
KELLY AND JONES COMPANY | GREENSBURG | PA |
KELLY AND JONES COMPANY | PITTSBURGH | PA |
KELLY AND LUDWIG | PHILADELPHIA | PA |
KELLY WOODEN WARE COMPANY | WATERFORD | PA |
KELSEY HAYES WHEEL COMPANY | MCKEESPORT | PA |
KEMBLE IRON COMPANY | RIDDLESBURG | PA |
KEMMERER IRON AND STEEL COMPANY | SCRANTON | PA |
Kendall Oil Co | Bradford | PA |
Kendall Oil Co. – Laboratory | Bradford | PA |
KENDALL REFINING CO. | BRADFORD | PA |
Kendall Refining Company | Bradford | PA |
KENDALL REFINING COMPANY (a/k/a Kendall Refining) | BRADFORD | PA |
KENNAMETAL, INCORPORATED | LATROBE | PA |
KENNEDY VAN SAUN | DANVILLE | PA |
KENNEDY VAN SAUN C/O WARNER | DEVAULT | PA |
Kensington Water Co. | New Kensington | PA |
KEPLERS FUEL COMPANY | EASTON | PA |
KEPPARS CO | PETROLIA | PA |
KEYSTONE | ELDERTON | PENNSYLVANIA |
KEYSTONE ASBESTOS MAGNESIA COMPANY | ETNA | PA |
KEYSTONE BREWERS, INCORPORATED | PITTSBURGH | PA |
Keystone Cement | Bath | PA |
KEYSTONE CHEMURGIC PLANT | BETHLEHEM | PA |
KEYSTONE COAL AND COKE COMPANY | GREENSBURG | PA |
KEYSTONE COAL AND COKE COMPANY | NEW ALEXANDRIA | PA |
KEYSTONE COAL AND COKE COMPANY | ELLSWORTH | PA |
KEYSTONE COAL AND COKE COMPANY | MADISON | PA |
KEYSTONE COAL AND COKE COMPANY | MADISON MINES | PA |
KEYSTONE COAL AND COKE COMPANY | DUNDALE | PA |
KEYSTONE DRAWN STEEL | SPRING CITY | PA |
Keystone Drydock | Philadelphia | PA |
KEYSTONE ENGINEERING COMPANY | PITTSBURGH | PA |
Keystone Generating Station | Elderton | PA |
Keystone Generating Station – Unit 1 | Elderton | PA |
Keystone Generating Station – Unit 2 | Elderton | PA |
Keystone Pipe and Supply | Butler | PA |
KEYSTONE PLANTATION | WYOMING | PA |
KEYSTONE PORTLAND | BATH | PA |
KEYSTONE PORTLAND CEMENT | BATH | PA |
KEYSTONE PORTLAND CEMENT | PHILADELPHIA | PA |
Keystone Portland Cement Company | Bath | PA |
KEYSTONE POWER PLANT | INDIANA | PA |
Keystone Power Station | Shelocta | PA |
KEYSTONE PROJECT – CLAIRTON WORKS | CLAIRTON | PA |
KEYSTONE PROJECT, CLAIRTON WORKS | CLAIRTON | PA |
KEYSTONE PROJECT, WESTINGHOUSE ELECTRIC | ELDERTON | PA |
KEYSTONE RESOURCES | MARS | PA |
KEYSTONE ROOFING COMPANY | YORK | PA |
KEYSTONE SHAFT MINE | MADISON | PA |
KEYSTONE STATION – UNITS 1 AND 2 – WESTINGHOUSE TURBINES AND GENERATORS | SHELOCTA | PA |
Keystone Wire & Iron | Huntingdon Valley | PA |
KEYSTONE WOOLEN MILLS | CONSHOHOCKEN | PA |
KIBBE, CHAFFIE AND COMPANY | PHILADELPHIA | PA |
KIBBE’S SPECIALTY CONTRACTORS | S. WILLIAMSPORT | PA |
KIMBERLY CLARK CORPORATION | MT HOLLY SPRINGS | PA |
King Keystone | Warren | PA |
KING OF PRUSSIA SHOPPING CENTER | KING OF PRUSSIA | PA |
KINGAN AND COMPANY, LIMITED | PHILADELPHIA | PA |
KINGSTON COAL COMPANY | KINGSTON | PA |
KINGSTON COAL COMPANY, NUMBER 2 SHAFT | KINGSTON | PA |
KINGSTON COAL COMPANY, NUMBER 4 BREAKER COLLY | KINGSTON | PA |
Kingston Colleries | PA | |
KINSEY DISTILLING CO | LINFIELD | PA |
KITTANNING BRICK AND FIRE CLAY COMPANY | PITTSBURGH | PA |
KITTANNING CERAMICS COMPANY | KITTANNING | PA |
KITTANNING PLATE GLASS COMPANY | KITTANNING | PA |
Klien Chocolate Company | Elizabethtown | PA |
KLUR FRANK CO | PITTSBURGH | PA |
Knitting Factory | Dallas | PA |
KNOBLIT – RICHMOND STREET | PHILADELPHIA | PA |
KNOLL PRODUCTS, INC. | HANOVER TOWNSHIP | PA |
KNOUSE CORPORATION | PEACH GLEN, ADAMS COUNTY | PA |
KNOUSE FOODS COOPERATIVE, INCORPORATED | ORRTANNA | PA |
KOLNILE BREWING COMPANY | PHILADELPHIA | PA |
KOPP GLASS | SWISSVALE | PA |
Koppel Plant | Beaver Falls | PA |
Koppel Steel Company | Ambridge | PA |
Koppel Steel Company | Beaver Falls | PA |
Koppers | Monaca | PA |
Koppers | Philadelphia | PA |
Koppers | Pittsburgh | PA |
KOPPERS | FAIRLESS HILLS | PA |
Koppers Building – Office | Pittsburgh | PA |
Koppers Co. | Pittsburgh | PA |
KOPPERS CO. | MCKEES ROCKS | PA |
KOPPERS CO., INC. | KOBUTA | PA |
KOPPERS COMPANY | PETROLIA | PA |
KOPPERS COMPANY | JOSEPHTOWN | PA |
Koppers Company (a/k/a Arco/Polymers, Inc. or Sinclair-Koppers) | Kabuta | PA |
KOPPERS COMPANY INC | MONROEVILLE | PA |
KOPPERS COMPANY INC | VERONA | PA |
KOPPERS COMPANY INC | PETROLIA | PA |
Koppers Company Inc. | Oil City | PA |
KOPPERS COMPANY INC. – CHEMICAL DIVISION | BEAVER | PA |
Koppers Company, Inc. | Kobuta | PA |
Koppers Company, Inc. | Petrolia | PA |
Koppers Company, Inc. | Pittsburgh | PA |
KOPPERS COMPANY, INC. | MONACA | PA |
KOPPERS COMPANY, INC. | VERONA | PA |
Koppers Company, Inc. | Bridgeville | PA |
KOPPERS COMPANY, INC. – CHEMICAL DIVISION | BEAVER | PA |
KOPPERS COMPANY, INC. – CHEMICAL DIVISION | EDWIN | PA |
KOPPERS COMPANY, INC. – CHEMICAL DIVISION – KOBUTA | BEAVER | PA |
KOPPERS COMPANY, INC. – CHEMICAL DIVISION – OIL CITY PLANT | OIL CITY | PA |
KOPPERS COMPANY, INC. – CHEMICAL DIVISION – PENACOL PLANT | PETROLIA | PA |
KOPPERS COMPANY, INC. – CHEMICALS & DYESTUFFS DIV | PETROLIA | PA |
KOPPERS COMPANY, INC. – COAL HYDROGENATION PILOT PLANT | VERONA | PA |
KOPPERS COMPANY, INC. – DYLITE PLANT | KOBUTA | PA |
KOPPERS COMPANY, INC. – ELASTIC DIVISION | KOBUTA | PA |
KOPPERS COMPANY, INC. – GENERAL COMMODITIES WAREHOUSE | PITTSBURGH | PA |
KOPPERS COMPANY, INC. – KOBUTA | BEAVER | PA |
KOPPERS COMPANY, INC. – KOBUTA | KOBUTA | PA |
KOPPERS COMPANY, INC. – ORGANIC MATERIALS DIV | OIL CITY | PA |
KOPPERS COMPANY, INC. – PENACOL PLANT | PETROLIA | PA |
KOPPERS COMPANY, INC. – PENACOL PLANT – CHEMICAL DIV. | PETROLIA | PA |
KOPPERS COMPANY, INC. – PENACOL PLANT – CHEMICAL DIVISION | PETROLIA | PA |
KOPPERS COMPANY, INC. – PENTACOL PLANT | PETROLIA | PA |
KOPPERS COMPANY, INC. – PETOLIA PLANT | PETROLIA | PA |
KOPPERS COMPANY, INC. – PIPING POLYSTRENE PLANT | KOBUTA | PA |
KOPPERS COMPANY, INC. – PLASTICS DIVISION | KOBUTA | PA |
KOPPERS COMPANY, INC. – PLASTICS DIVISION | MONACA | PA |
KOPPERS COMPANY, INC. – PLASTICS DIVISION – KOBUTA PLANT | KOBUTA | PA |
KOPPERS COMPANY, INC. – TAR & CHEM DIV | OIL CITY | PA |
KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | NEW NORRISTOWN | PA |
KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | OIL CITY | PA |
KOPPERS COMPANY, INC. – TAR PRODUCTS DIVISION | SWEDELAND | PA |
KOPPERS COMPANY, INC. – VERONA RESEARCH | VERONA | PA |
KOPPERS COMPANY, INC. – VERONA RESEARCH CENTER | VERONA | PA |
Koppers Company, Inc. (Air Reduction) | Johnstown | PA |
KOPPERS COMPANY, INC. CHEMICAL DIVISION – OIL CITY PLANT | OIL CITY | PA |
KOPPERS COMPANY, INC. CHEMICAL DIVISION – PENACOL PLANT | PETROLIA | PA |
KOPPERS COMPANY, INCORPORATED | PITTSBURGH | PA |
KOPPERS COMPANY, INCORPORATED, KOPPERS BUILDING | PITTSBURGH | PA |
KOPPERS PITTSBURGH CO | BRIDGEVILLE | PA |
KOPPERS PITTSBURGH CO – BLDG 35 | BRIDGEVILLE | PA |
KOPPERS PLANT | BRIDGEVILLE | PA |
KOPPERS PLANT | PETROLIA | PA |
KOPPERS PLANT | VERONA | PA |
KOPPERS RESEARCH LAB | MONROEVILLE | PA |
Korhumel Steel & Aluminum Company-Mill Strip Division | New Castle | PA |
KORVETTES SHOPPING CENTER | PHILADELPHIA | PA |
KRAFT FOODS | FOGELSVILLE | PA |
KRAFT FOODS COMPANY | PALMYRA | PA |
Kutz Engineering | Pittsburgh | PA |
KUTZTOWN FOUNDRY | KUTZTOWN | PA |
KUTZTOWN FOUNDRY AND MACHINE | KUTZTOWN | PA |
KUTZTOWN HIGH SCHOOL | KUTZTOWN | PA |
L & L HEATING & EQUIPMENT | PHILADELPHIA | PA |
L & L MANUFACTURING CO. | UPLAND | PA |
L & N RAILROAD | CONWAY | PA |
L AND L HEATING AND EQUIPMENT | PHILADELPHIA | PA |
L C ANDERSON | HUNTINGDON | PA |
L O BOUQUIN CO | OIL CITY | PA |
L SONNEBORN SONS INC – DAUGHERTY REFINERY DIVISION | PETROLIA | PA |
L. GOLDSTEIN’S & SONS, INCORPORATED | PHILADELPHIA | PA |
L. M. BARE PAPER CO. | ROARING SPRING | PA |
L. SONNEBORN SONS, INCORPORATED | PETROLIA | PA |
L. WINTERER | PHILADELPHIA | PA |
L. WINTERES | PHILADELPHIA | PA |
L.A. RILEY AND COMPANY | PHILADELPHIA | PA |
L.A. RILEY AND COMPANY | ASHLAND | PA |
L.A. RILEY AND COMPANY | CENTRALIA | PA |
L.H. PARKE COMPANY | PHILADELPHIA | PA |
L.H. PRENTICE COMPANY | PITTSBURGH | PA |
L.J. LAND, INCORPORATED | READING | PA |
L.LAVESON AND SON | PHILADELPHIA | PA |
LA BELLE WORKS | ALLEGHENY | PA |
LA BRUM SCHOOL – RED LION & CALERO ROADS | PHILADELPHIA | PA |
LABOR PRODUCTS AND ICE COMPANY | BRACKENRIDGE | PA |
LACKAWANNA AND WYOMING VALLEY COMPANY | SCRANTON | PA |
LACKAWANNA AND WYOMING VALLEY RAILWAY COMPANY | SCRANTON | PA |
LACKAWANNA COAL AND COKE COMPANY | VINTONDALE | PA |
LACKAWANNA COAL AND COKE COMPANY | WEHRUM | PA |
LACKAWANNA COUNTY HIGH RISE FOR THE ELDERLY – JACKSON STREET | SCRANTON | PA |
Lackawanna Iron & Steel | Lebannon | PA |
LACKAWANNA IRON AND COAL COMPANY | SCRANTON | PA |
LACKAWANNA IRON AND STEEL COMPANY | LEBANON | PA |
LACKAWANNA IRON AND STEEL COMPANY | VINTONDALE | PA |
LACKAWANNA IRON AND STEEL COMPANY | DONAGHMORE | PA |
LACKAWANNA IRON AND STEEL COMPANY | DUNAGHMORE | PA |
LACKAWANNA IRON AND STEEL COMPANY | NORTH CORNWALL | PA |
LACKAWANNA IRON AND STEEL COMPANY | LABANON | PA |
LACKAWANNA IRON AND STEEL COMPANY | SCRANTON | PA |
LACKAWANNA LIGHT COMPANY – POWER PLANT | SCRANTON | PA |
LACKAWANNA VALLEY ELECTRIC LIGHT AND POWER COMPANY – POWER PLANT | CARBONDALE | PA |
LACO APPLICATORS, INC. – WAREN STATE BOILER HOUSE | WARREN | PA |
Laco Mc Mullen Co | Erie | PA |
LACO MCMULLEN CO | ERIE | PA |
Laco Sales Inc | Erie | PA |
LACO-MCMULLEN COMPANY INC. | ERIE | PA |
LADDIE BOY DIV OF N C C P | PHILADELPHIA | PA |
LADDIE BOY DOG FOOD COMPANY | PHILADELPHIA | PA |
LADDIE BOY DOG FOOD CORPA | PHILADELPHIA | PA |
LAFAYETTE HOTEL | PHILADELPHIA | PA |
L-AIR LIQUIDE – WALNUT STREET GATE | JOHNSTOWN | PA |
LAKE | CHESTER | PA |
LAKELAND HOSPITAL | LAKELAND | PA |
LAKENS IRON AND STEEL COMPANY | COATESVILLE | PA |
LANCASTER CLOSURE PLANT | LANCASTER | PA |
LANCASTER CORK WORKS | LANCASTER | PA |
LANCASTER COUNTY RAILWAY AND LIGHT COMPANY – POWER PLANT | LANCASTER | PA |
LANCASTER FLOOR PLANT | LANCASTER | PA |
LANCASTER FLOOR PLANT BLDG. #500 | LANCASTER | PA |
LANCASTER FLOOR PLT BLDG 44 | LANCASTER | PA |
LANCASTER MALLEABLE CASTI | LANCASTER | PA |
LANCASTER MALLEABLE CASTING COMPANY | LANCASTER | PA |
LANCASTER MALLEABLE CASTINGS CO | LANCASTER | PA |
LANCASTER OSTEOPATHIC HOSPITAL | LANCASTER | PA |
LANCE COLLIERY #11 | PLYMOUTH | PA |
LANCE COLLIERY #11 | PLYMOUTH JUNCTION | PA |
LAND TITLE AND TRUST COMPANY | PHILADELPHIA | PA |
LANDIS MACHINE COMPANY | WAYNESBORO | PA |
LANDIS TOOL CO | WAYNESBORO | PA |
LANEHART COMPANY | GREENCASTLE | PA |
LANKENAU HOSPITAL | PHILADELPHIA | PA |
LANKENAU HOSPITAL – NURSES SCHOOL | WYNNWOOD | PA |
LANSDALE ELECTRIC LIGHT DEPARTMENT – MUNICIPAL ELECTRIC-LIGHT PLANT | LANSDALE | PA |
LANSDALE TUBE | LANSDALE | PA |
LANSDOWNE STEEL AND IRON CO | MORTON | PA |
LANSDOWNE TOWERS, INCORPORATED | ALDEN | PA |
LARGE DISTILLING COMPANY | WILSON | PA |
LARSON SUPPLY | READING | PA |
LASKO METAL PRODUCTS, INCORPORATED | WESTCHESTER | PA |
LATROBE AREA HOSPITAL | LATROBE | PA |
LATROBE BREWING CO. | LATROBE | PA |
LATROBE ELECTRIC STEEL COMPANY – STEEL PLANT | LATROBE | PA |
Latrobe Forge & Spring, Inc. | Latrobe | PA |
LATROBE FORGE AND SPRING | LATROBE | PA |
LATROBE FOUNDRY AND MACHINE | LATROBE | PA |
LATROBE HOSPITAL | LATROBE | PA |
LATROBE HOSPITAL – NEW ADDITION | LATROBE | PA |
LATROBE STEEL | LATROBE | PA |
LATROBE STEEL CO | LATROBE | PA |
Latrobe Steel Company | Latrobe | PA |
LATROBE STEEL WORKS | LATROBE | PA |
LATROBE WORKS | LATROBE | PA |
LAUREL RUN COAL COMPANY | WILKES BARRE | PA |
LAUREL RUN COAL COMPANY | MINERS MILLS | PA |
LAURELTON STATE VILLAGE | LAURELTON | PA |
LAVA CRUCIBLE REFRACTORIES | ZELIENOPLE | PA |
LAVINO FURNACE COMPANY | LEBANON | PA |
Lavino Shipping Company | Philadelphia | PA |
LAWRENCE CEMENT COMPANY | SIEGFRIED, NORTHAMPTON | PA |
LAWRENCE CEMENT COMPANY OF PENNSYLVANIA | SIEGFRIED, NORTHAMPTON | PA |
LEADER PUBLISHING COMPANY | PITTSBURGH | PA |
LEAGUE ISLAND | PHILADELPHIA | PA |
Leamington School | Pittsburgh | PA |
LEAMY HOME MOUNT AIRY | PHILADELPHIA | PA |
LEBANON BLAST FURNACE COMPANY | LEBANON | PA |
Lebanon City County Building | Lebanon | PA |
LEBANON CONCENTRATOR PLANT | LEBANON | PA |
LEBANON FURNACES | LEBANON | PA |
LEBANON FURNANCE COMPANY | LEBANON | PA |
Lebanon Plumbing Supply Co | Lebanon | PA |
LEBANON STEAM COMPANY – POWER PLANT | LEBANON | PA |
LEBANON VALLEY COLLEGE – VICKROY HALL – GIRLS DORM | ANNVILLE | PA |
LEBANON VALLEY IRON WORKS | LEBANON | PA |
LEBANON VALLEY STREET RAILWAY COMPANY | LEBANON | PA |
LECTROMELT | PITTSBURGH | PA |
Ledwig Huntel Company | Sharon Hill | PA |
Lee Hospital | Johnstown | PA |
Lee Rubber & Tire Company | Conshohocken | PA |
LEE TIRE RUBBER | CONSHOHOCKEN | PA |
Leechburg Supply Co | Leechburg | PA |
Leeds & Northrop | North Wales | PA |
Leeds & Northrup | Philadelphia | PA |
LEEDS & NORTHRUP CO (a/k/a Riggs, Distler & Co.) | NORTH WALES | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | PHILADELPHIA | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | WILKES BARRE | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | ASHLEY | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | PLYMOUTH | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | WANAMIE | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | AUDENRIED | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | AUDEURIED | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | SOUTH WILKESBARRE | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | SUGAR NOTCH | PA |
LEHIGH AND WILKES BARRE COAL COMPANY | NOTINGHAM COLLIERY | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, COLLIERY #4 | AUDENRIED | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, EMPIRE COLLIERY #4 | ASHLEY | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, HOLLENBACK COLLIERY #2 | WILKES BARRE | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, STANTON COLLIERY #4 | ASHLEY | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, SUGAR NOTCH COLLIERY #9 | SUGAR NOTCH | PA |
LEHIGH AND WILKES BARRE COAL COMPANY, WANAMIE COLLIERY #3 | WANAMIE | PA |
LEHIGH CAR WHEEL AND AXLE COMPANY | CATASAUQUA | PA |
LEHIGH COAL AND COMPANY | LANSFORD | PA |
LEHIGH COAL AND COMPANY | HAUTO | PA |
LEHIGH COAL AND COMPANY | NESQUEHONING | PA |
LEHIGH COAL AND COMPANY | TAMAQUA | PA |
LEHIGH COAL AND IRON COMPANY | LANSFORD | PA |
LEHIGH COAL AND NAVAGATION COMPANY | LANSFORD | PA |
LEHIGH COAL AND NAVAGATION COMPANY | PHILADELPHIA | PA |
LEHIGH COAL AND NAVAGATION COMPANY | NESQUEHONING | PA |
LEHIGH COAL AND NAVAGATION COMPANY | HAUTO | PA |
LEHIGH COAL AND NAVIGATION COMPANY | HAUTO | PA |
LEHIGH COAL AND NAVIGATION COMPANY | PHILADELPHIA | PA |
LEHIGH COAL AND NAVIGATION COMPANY | WILKES BARRE | PA |
LEHIGH COAL AND NAVIGATION COMPANY | NESQUEHONING | PA |
LEHIGH COAL AND NAVIGATION COMPANY | LANSFORD | PA |
LEHIGH COAL AND NAVIGATION COMPANY | NEW PHILADELPHIA | PA |
LeHigh Coke Co. | South Bethlehem | PA |
LEHIGH COKE COMPANY | SOUTH BETHLEHEM | PA |
LEHIGH COUNTY COURT HOUSE | ALLENTOWN | PA |
LEHIGH COUNTY HOME | WESCOSVILLE | PA |
Lehigh Dye & Finishing Co. | Allentown | PA |
Lehigh Engineering | Bethlehem | PA |
LEHIGH ENGINEERING CO. – WEST PLANT | HANOVER | PA |
Lehigh Engineering Company | Dunmore | PA |
LEHIGH INDUSTRIAL POWER COMPANY | STAUTO | PA |
LEHIGH INDUSTRIAL POWER COMPANY | HAUTO | PA |
LEHIGH MANUFACTURING COMPANY | PHILADELPHIA | PA |
Lehigh Material Company | Philadelphia | PA |
LEHIGH MATERIALS CO (a/k/a Tamaqua Colliery) | TAMAQUA | PA |
LEHIGH NAVIGATION ELECTRIC COMPANY – GENERATING STATION | HAUTO | PA |
Lehigh Parkway School | Allentown | PA |
LEHIGH PIPE SHOP | BETHLEHEM | PA |
LEHIGH PORTLAND CEMENT | ALLENTOWN | PA |
LEHIGH PORTLAND CEMENT – FOGELSVILLE PLANT | ALLENTOWN | PA |
LEHIGH PORTLAND CEMENT COMPANY | NEW CASTLE | PA |
LEHIGH PORTLAND CEMENT COMPANY | ORMROD | PA |
LEHIGH PORTLAND CEMENT COMPANY | ALLENTOWN | PA |
LEHIGH PORTLAND CEMENT COMPANY | FOGELSVILLE | PA |
LEHIGH PORTLAND CEMENT COMPANY | WEST COPLAY | PA |
LEHIGH PORTLAND CEMENT COMPANY | SANDTS EDDY | PA |
LEHIGH PORTLAND CEMENT COMPANY | BATH | PA |
LEHIGH PORTLAND CEMENT COMPANY | PAYNES STATION | PA |
LEHIGH PORTLAND CEMENT COMPANY | WEST COPLEY | PA |
Lehigh Portland Cement Company – Fogelsville Plant | Fogelsville | PA |
Lehigh Portland Cement Company – Fogelsville Plant – Young Building | Fogelsville | PA |
LEHIGH SILK DYEING COMPANY | WEIDMANN | PA |
LEHIGH UNIVERSITY – MAGINNES HALL OF LIBERAL ARTS | BETHLEHEM | PA |
Lehigh Valley Coal Co. | PA | |
LEHIGH VALLEY COAL COMPANY | PHILADELPHIA | PA |
LEHIGH VALLEY COAL COMPANY | PITTSTON | PA |
LEHIGH VALLEY COAL COMPANY | WILKES BARRE | PA |
LEHIGH VALLEY COAL COMPANY | ORWIGSBURG | PA |
LEHIGH VALLEY COAL COMPANY | WYOMING | PA |
LEHIGH VALLEY COAL COMPANY | CENTRALIA | PA |
LEHIGH VALLEY COAL COMPANY | HAZLETON | PA |
LEHIGH VALLEY COAL COMPANY | JEANSVILLE | PA |
LEHIGH VALLEY COAL COMPANY | MT. CARMEL | PA |
LEHIGH VALLEY COAL COMPANY | PITTSTON JUNCTION | PA |
LEHIGH VALLEY COAL COMPANY | HAZELTON | PA |
LEHIGH VALLEY COAL COMPANY | PARK PLACE | PA |
LEHIGH VALLEY COAL COMPANY | JEANSVILLE, HAZELTON | PA |
LEHIGH VALLEY COAL COMPANY, BLACKWOOD COLLIERY | ORWIGSBURG | PA |
LEHIGH VALLEY COAL COMPANY, EXETER COLLIERY | PITTSTON | PA |
LEHIGH VALLEY COAL COMPANY, PROSPECT COLLIERY | WILKES BARRE | PA |
LEHIGH VALLEY COOPERATIVE FARMERS | ALLENTOWN | PA |
Lehigh Valley Dairy | Allentown | PA |
LEHIGH VALLEY R. R. – PRINGLE STREET SIDING | KINGSTON | PA |
LEHIGH VALLEY RAILROAD | COXTON | PA |
LEHIGH VALLEY RAILROAD COMPANY | BETHLEHEM | PA |
LEHIGH VALLEY SUPPLY | ALLENTOWN | PA |
LEHIGH VALLEY TRACTION COMPANY | ALLENTOWN | PA |
LEHIGH VALLEY TRANSIT COMPANY – POWER PLANT | ALLENTOWN | PA |
LEHIGH WATER COMPANY – FILTRATION PLANT | EASTON | PA |
LEHIGH-NORTHAMPTON GAS AND ELECTRIC COMPANY – POWER PLANT | CATASAUQUA | PA |
LEHIGHTON ELECTRIC LIGHT, HEAT AND POWER COMPANY – POWER STATION | LEHIGHTON | PA |
LEICESTER CONTINENTAL MILLS COMPANY | GERMANTOWN | PA |
LEIDY SCHOOL | PHILADELPHIA | PA |
LEISENRING AND COMPANY | DUNCOTT | PA |
LEISENRING AND COMPANY | MINERSVILLE | PA |
LEITH MINES | LEITH STATION | PA |
Lenape Elementary School | Ford City | PA |
LENAPE FORGE, INCORPORATED | WEST CHESTER | PA |
Leninger Knitting Mills | Mohnton | PA |
LENTZ AND COMPANY | PARK PLACE | PA |
LENTZ LILLY AND COMPANY | PARK PLACE | PA |
LEONARD BROTHERS | SERANTON | PA |
LEOPOLD VILSACK | PITTSBURGH | PA |
LESTER INDUSTRIAL BLDG | LESTER | PA |
LESTER INDUSTRIAL PARK | LESTER | PA |
Leston Company | Philadelphia | PA |
LETORT ELEM. SCHOOL | MILLERSVILLE | PA |
LETORT ELEMENTARY SCHOOL | MILLERSVILLE | PA |
LETTERKENNY DEPOT | LETTERKENNY | PA |
Levinson Steel | Mckees Rocks | PA |
LEWIS BLOCK | PITTSBURGH | PA |
Lewis Foundry and Machine | Groveton | PA |
LEWIS FOUNDRY AND MACHINE COMPANY | PITTSBURGH | PA |
LEWIS S. COX AND COMPANY | PHILADELPHIA | PA |
LEWISTOWN SMELTING & REFINING CO. | LEWISTOWN | PA |
LEXINGTON MEAD CORP. | PITTSBURGH | PA |
LIBERTY BELL RACE TRACK | PHILADELPHIA | PA |
LIBERTY BUILDING & HEATING, JUNIOR HIGH SCHOOL – HARDING AVE. & MAIN ST. | ALIQUIPPA | PA |
LIBERTY MANUFACTURING COMPANY | PITTSBURGH | PA |
LIBERTY MARKET COMPANY | PITTSBURGH | PA |
LIBERTY POWDER COMPANY | MT. BRADDOCK | PA |
LICKDALE IRON COMPANY | LICKDALE | PA |
LIGGETT AND MYERS TOBACCO COMPANY | PHILADELPHIA | PA |
LIGGETT SPRING AND AXLE COMPANY | MONONGAHELA | PA |
LILLY WASHINGTON SCHOOL | LILLY | PA |
Limbach Company | Pittsburgh | PA |
LIMERICK NUCLEAR POWER PLANT | LIMERICK | PA |
LINCOLN COAL AND COKE COMPANY | WATERBURG | PA |
LINCOLN COAL AND COKE COMPANY | SCOTTDALE | PA |
LINCOLN COAL AND COKE COMPANY | HELEN | PA |
Lincoln High School | Ellwood City | PA |
LINCOLN LIBERTY BUILDING | PHILADELPHIA | PA |
LINCOLN UNIVERSITY – STEAM TUNNELS | OXFORD | PA |
LINDBERG | NEWTOWN SQUARE | PA |
LINDE AIR PRODUCTS | KITTANNING | PA |
Linde Air Products Co. (Union Carbide & Carbon Corp.) | Coatesville | PA |
Linde Air Products Co. (Union Carbide & Carbon Corp.) | Duquesne | PA |
Linde Air Products Co. (Union Carbide & Carbon Corp.) | Homestead | PA |
Linde Air Products Co. (Union Carbide & Carbon Corp.) | Kittaning | PA |
Linde Air Products Co. (Union Carbide & Carbon Corp.) | Pittsburgh | PA |
LINDE AIR PRODUCTS COMPANY | KITTANNING | PA |
LINDE AIR PROUDCTS COMPANY | DUQUESNE | PA |
Linde Company | Erie | PA |
Linde Company | Fairless Mills | PA |
Linde Company | Farrell | PA |
LINDNER SHOE COMPANY | CARLISLE | PA |
LINDNER SHOE COMPANY | PHILADELPHIA | PA |
Line Company | Braddock | PA |
LINK BELT COMPANY | COLMAR | PA |
Link Belt Engineering Co. | Philadelphia | PA |
LINK BELT ENGINEERING COMPANY | PHILADELPHIA | PA |
LINK BELT ENGINEERING COMPANY, BY DODGE AND DAY | NICETOWN, PHILADELPHIA | PA |
LIQUID CARBONIC ACID MANUFACTURING COMPANY | PITTSBURGH | PA |
LIQUID CARBONIC CORPORATION | PHILADELPHIA | PA |
Little Sisters of the Poor | Pittsburgh | PA |
Locher’S Green House | West View | PA |
LOCHIEL ROLLING MILL COMPANY | HARRISBURG | PA |
LOCKHART IRON AND STEEL COMPANY | MCKEES ROCKS | PA |
LOCUST SPRING COLLIERY | LOCUST GAP | PA |
LOEWENGART & CO. INC. – Mercersburg Tannery Div. | MERCERSBURG | PA |
LOFTUS ENGINEERING CO | PITTSBURGH | PA |
Loftus Engineering Corporation | Pittsburgh | PA |
LOGAN IRON AND STEEL COMPANY | BURNHAM | PA |
LOGAN IRON AND STEEL COMPANY | LEWISTOWN | PA |
LONE STAR CEMENT | NAZARETH | PA |
LONE STAR CEMENT CORP | NAZARETH | PA |
LONE STAR INDUSTRIES INC | NAZARETH | PA |
Long Publishing Company | Philadelphia | PA |
LONGMEAD IRON COMPANY | CONSHOHOCKEN | PA |
Long’S P & H Service | Easton | PA |
LONGSTRETH ELEMENTARY SCHOOL – 57TH & WILLOW AVENUE | PHILADELPHIA | PA |
LOOS & DILWORTH | PHILADELPHIA | PA |
LOOSE WILES BISCUIT COMPANY | PITTSBURGH | PA |
LORAIN STEEL COMPANY | JOHNSTOWN | PA |
LORAIN STEEL COMPANY | JOHNSTON | PA |
LORAINE STEEL | JOHNSTOWN | PA |
LOREN’S HEAT TREATING | PHILADELPHIA | PA |
LORENZ & SONS | PHILADELPHIA | PA |
LORENZ HEAT TREATING | PHILADELPHIA | PA |
LORMACK CORPORATION | SCHELLBURG | PA |
Louis B. Orlowitz Plumbing Supply | Philadelphia | PA |
LOUIS E. DIERUFF JUNIOR HIGH SCHOOL | ALLENTOWN | PA |
LOUIS KRAEMER AND COMPANY | READING | PA |
LOU’S BAR | PHILADELPHIA | PA |
LOVEKIN TRAGESER DIV | PHILADELPHIA | PA |
LOVEKIN WATER HEATER COMPANY – HOME OFFICE | PHILADELPHIA | PA |
LOVELL COAL MINING COMPANY | PORTAGE | PA |
LOVELL MFG CO | ERIE | PA |
LOWER MERION HIGH SCHOOL | ARDMORE | PA |
LOWER WORKS | WOODLAND | PA |
L’SONNEBARN SONS INCORPORATED | PETROLIA | PA |
LTV SHEET AND TUBE | MIDLAND | PA |
LTV Steel | Aliquippa | PA |
LTV Steel | Rochester | PA |
LTV Steel | Monaca | PA |
LTV Steel | Baden | PA |
LTV Steel | Ambridge | PA |
LTV STEEL | PITTSBURGH | PA |
LTV STEEL – COKE PLANT | PITTSBURGH | PA |
LTV STEEL – HAZELWOOD PLANT | PITTSBURGH | PA |
LTV STEEL – SOUTHSIDE | PITTSBURGH | PA |
LTV Steel (fka J&L / Republic) – Hazelwood | PITTSBURGH | PA |
LTV Steel (fka J&L Steel) | ALIQUIPPA | PA |
LTV Steel (fka J&L Steel) – South Side Plant | PITTSBURGH | PA |
LTV, f/k/a J&L STEEL | ALIQUIPPA | PA |
LUCENT TECHNOLOGIES, INCORPORATED | ALLENTOWN | PA |
LUCENT TECHNOLOGIES, INCORPORATED | BREINIGSVILLE | PA |
LUCENT TECHNOLOGOES | READING | PA |
Lucerne Mines | Indiana | PA |
LUCIFER FURNACES | WARRINGTON | PA |
LUCY FURN | PITTSBURGH | PA |
LUCY FURNACES | PITTSBURGH | PA |
LUDLOW ELEMENTARY SCHOOL – 6TH & MASTER STREETS | PHILADELPHIA | PA |
LUKE FIDLER COLLIERY | SHAMOKIN | PA |
LUKENS IRON AND STEEL COMPANY | COATESVILLE | PA |
Lukens Steel | Coatesville | PA |
Lukens Steel | Coatsville | PA |
Lukens Steel Co | Coatesville | PA |
LUKENS STEEL CO | COATSVILLE | PA |
LUKENS STEEL CO. – PHYSICAL TEST LABS. | COATESVILLE | PA |
Lukens Steel Company | Coatesville | PA |
LUKENS STEEL CORP | COATESVILLE | PA |
LUKENS STEEL PLANT | COATESVILLE | PA |
Lumax Industries | Altoona | PA |
LUPTON MFG CO | PHILADELPHIA | PA |
Luzerne County Gas & Electric | Humlock Creek | PA |
LYCOMING EDISON COMPANY | WILLIAMSPORT | PA |
LYCOMING ELECTRIC COMPANY – POWER PLANT | WILLIAMSPORT | PA |
Lycoming Rubber Co. | Williamsport | PA |
LYKENS VALLEY COAL COMPANY | LYKENS VALLEY | PA |
LYKENS VALLEY COAL COMPANY | LYKENS | PA |
LYNN HEIDELBERG SCHOOL | NEW TRIPOLI | PA |
LYNN HEIDELBERG SCHOOL | TRIPOLI | PA |
LYNNEWOOD GARDENS | ELKINS PARK | PA |
LYTLE COAL COMPANY | PRIMROSE | PA |
LYTLE COAL COMPANY | MINERSVILLE | PA |
M & G Industrial Associates, Inc. | Pittsburgh | PA |
M MILLER SPRING & MFG CO | PITTSBURGH | PA |
M S A RESEARCH CORP | CALLERY | PA |
M S A RESEARCH CORP | GALLERY | PA |
M Schnoll & Sons | Philadelphia | PA |
M. AND M. MARS, INCORPORATED | ELIZABETHTOWN | PA |
M. AND W.H. NIXON | PHILADELPHIA | PA |
M. AND W.H. NIXON, EAST MANAYUNK | PHILADELPHIA | PA |
M. AND W.H. NIXON, PAPER COMPANY | PHILADELPHIA | PA |
M. L. Clothier | Villa Nova | PA |
M. S. A. RESEARCH CENTER | CALLERY | PA |
M.H. PICKERING | PITTSBURGH | PA |
M.L. BAYARD AND COMPANY | PHILADELPHIA | PA |
M.T. SEAKITE | CHESTER | PA |
M.W. KELLOGG | WILLIAMSPORT | PA |
MABEL FURNACE | SHARPSVILLE | PA |
Mac Service, Incorporated | Windber | PA |
MACAW BROTHERS | NORWOOD | PA |
MACAW BROTHERS | NORWOOD STATION | PA |
MAC-CO SERVICE | PITTSBURGH | PA |
MACHINE SHOP | ALTOONA | PA |
MACHOLD AND RIDDELL | PHILADELPHIA | PA |
MACK AXE WORKS | BEAVER FALLS | PA |
MACK MFG. CORP. | ALLENTOWN | PA |
Mack Truck | Allentown | PA |
MACK TRUCK | MACKUNGIE | PA |
MACK TRUCKS – WORLD HEADQUARTERS – MACK BOULEVARD | ALLENTOWN | PA |
MACK WAREHOUSE | PHILADELPHIA | PA |
MACK WAREHOUSE CORP. | PHILADELPHIA | PA |
MACK WHSE. | PHILADELPHIA | PA |
Mackintosh Hemphill | Midland | PA |
MACKINTOSH HEMPHILL AND COMPANY | PITTSBURGH | PA |
MACKINTOSH-HEMPHILL | MIDLAND | PA |
MACKINTOSH-HEMPHILL | PITTSBURGH | PA |
Mackintosh-Hemphill Company | Pittsburgh | PA |
MADDOCK & CO | BALA CYNWYD | PA |
Magazine Lumber Co | Cardale | PA |
MAGEE CARPET CO | BLOOMSBURG | PA |
MAGEE CARPET CO – PIPE SHOP | BLOOMSBURG | PA |
MAGEE CARPET CO. | BLOOMSBURG | PA |
Magee Carpet Company | Bloomsburg | PA |
MAGEE CARPET COMPANY – BLDG 50 | BLOOMSBURG | PA |
MAGEE GENERAL HOSPITAL | PITTSBURGH | PA |
MAGEE WOMENS HOSPITAL | PITTSBURGH | PA |
MAGINN AND LEWIS | PITTSBURGH | PA |
MAHONING ROLLING MILL COMPANY | DANVILLE | PA |
MAHONING VALLEY IRON COMPANY | PITTSBURGH | PA |
MAHONINGTOWN SHOPS | NEW CASTLE | PA |
MAJESTIC APARTMENT HOUSE | PHILADELPHIA | PA |
Makefield Elementary | Yardley | PA |
MALL OFFICE BUILDING | PHILADELPHIA | PA |
MALSBARY MANUFACTURING CO | UNIONTOWN | PA |
MALTHBY COLLIERY | WYOMING | PA |
MAMMOTH SHAFT MINE – MAMMOTH PLANT | MAMMOTH | PA |
MANAYUNK | PHILADELPHIA | PA |
MANGANESE STEEL FORGE CO | PHILADELPHIA | PA |
Manganese Steel Forge Co. | Philadelphia | PA |
MANHATTAN SLATE COMPANY | SLATINGTON | PA |
MANITOWOC (USS) | PHILADELPHIA | PA |
MANN BROTHERS | HARRISBURG | PA |
MANOR BRICK CRAFTERS INC | NEW OXFORD | PA |
MANOR OAK TWO – COCHRAN ROAD | PITTSBURGH | PA |
MANUFACTURERS LIGHT AND HEAT PLANT | CLAYSVILLE | PA |
Maple Avenue Hospital | Du Bois | PA |
MARATHON CO | LESTER | PA |
MARCAL PAPER MILLS, INCORPORATED | PHILADELPHIA | PA |
MARCK SHARP & DOHME INC – H. K. Mulford Plant | PHILADELPHIA | PA |
MARCUS HOOK PLANT | MARCUS HOOK | PA |
Marietta Carpet Plant | Marietta | PA |
MARIETTA METAL PRODUCTS CORP. | MARIETTA | PA |
MARIETTA METAL PRODUCTS CORP. | PHILADELPHIA | PA |
MARINE BANK BUILDING – STATE STREET | ERIE | PA |
MARINE CORPS RECRUITING DEPOT | WEST READING | PA |
MARINE LEADER | CHESTER | PA |
MARITIME SUPPLY CO | PHILADELPHIA | PA |
MARKER & SONS | MC KEESPORT | PA |
MARKER & SONS | MCKEESPORT | PA |
Marks & Wyant Plumbing & Heating | Chalfont | PA |
MARKS BROTHERS | PHILADELPHIA | PA |
Marlsbary Mfg Co | Uniontown | PA |
MARPLE TOWNSHIP | DELAWARE COUNTY | PA |
MARQUETTE CEMENT | PITTSBURGH | PA |
MARQUETTE CEMENT | NEVILLE ISLAND | PA |
MARQUETTE CEMENT – NEVILLE ISLAND | PITTSBURGH | PA |
Marquette Cement Mfg. Co. | Neville Township | PA |
MARSDEN T J CO | POTTSVILLE | PA |
MARSH PLATE GLASS COMPANY | WALTON | PA |
MARSHALL BROTHERS AND COMPANY | PHILADELPHIA | PA |
MARSHALL BROTHERS AND COMPANY | NEWPORT | PA |
MARSHALL KENNEDY COMPANY | PITTSBURGH | PA |
MARSHALL KENNEDY COMPANY | ALLEGHENY | PA |
MARSHALSEA FOUR ARM | PITTSBURGH | PA |
MARTIN AND W.H. NIXON | EAST MANAYUNK | PA |
MARTIN AND W.H. NIXON | PHILADELPHIA | PA |
MARTIN AND WILLIAM H. NIXON PAPER COMPANY | PENEOYD | PA |
MARTIN AND WILLIAM NIXON PAPER COMPANY | PENCOYD | PA |
MARTIN LUTHER KING HIGH SCHOOL – STENTON AVENUE | PHILADELPHIA | PA |
MARTIN LUTHER KING JUNIOR SCHOOL | PHILADELPHIA | PA |
MARTIN LUTHER KING SCHOOL – STENTON AVENUE & HAINES STREET | PHILADELPHIA | PA |
MARTIN TOWERS | BETHLEHEM | PA |
MARTINS CREEK | MARTINS CREEK | PENNSYLVANIA |
MARTINS CREEK POWER STATION | MARTINS CREEK | PA |
Martins Creek Powerhouse | Martins Creek | PA |
MARTINS CREEK, P.P.L. | STROUDSBURG | PA |
Mary Immaculate Seminary | Northampton | PA |
MARY STREET PROJECT | KINGSTON | PA |
MARY WOOD COLLEGE – NEW BOILER ROOM | SCRANTON | PA |
MARY WOOD COLLEGE – NOVITIATE BLDG | SCRANTON | PA |
MARYLAND COAL COMPANY | SOUTH FORK | PA |
MARYLAND COAL COMPANY | HAZELTON | PA |
MARYLAND COAL COMPANY | PHILADELPHIA | PA |
MARYLAND COAL COMPANY | TUSCARORA | PA |
MARYLAND COAL COMPANY | MARYD | PA |
MARYLAND COAL COMPANY OF PENNSYLVANIA | ST. MICHAEL | PA |
MARYLAND STEEL COMPANY | PHILADELPHIA | PA |
MARYWOOD UNIVERSITY – MARIAN CONVENT BUILDING – ADAMS AVENUE | SCRANTON | PA |
MASLAND DURALEATHER CO | PHILADELPHIA | PA |
MASONIC HOMES – NEW RECREATION BLDG. | ELIZABETHTOWN | PA |
MASONIC HOMES – RECREATION BLDG. | ELIZABETHTOWN | PA |
Masonic Temple | Pottstown | PA |
MASONRY INC | CARNEGIE | PA |
Masontown Brewing Co. | Masontown | PA |
Masontown Bridge, Hatfield Power Station | Monongahela | PA |
Masontown Bridge, Hatfield Power Station | Masontown | PA |
MATHER CO. | TOLEDO | PA |
MATHER COLLIERIES | RICES LANDING | PA |
MATTHEW S. LEWIS COMPANY | CANONSBURG | PA |
MATTHIESSEN AND HEGELER ZINC COMPANY | ELRAMA | PA |
MAUCH CHUNK CRYSTAL ICE COMPANY | MAUCH CHUNK | PA |
MAUCH CHUNK LEHIGHTON AND SLATINGTON RAILWAY COMPANY | MAUCH CHUNK | PA |
MAUCH CHUNK LEHIGHTON AND SLATINGTON RAILWAY COMPANY | ALLENTOWN | PA |
MAUMEE (USS) | CHESTER | PA |
MAX AND LEVY BUILDING | PHILADELPHIA | PA |
Max Brockton Textile Company | Philadelphia | PA |
MAXTON | CHESTER | PA |
MAXWELL COLLIERY | ASHLEY | PA |
MAXWELL COLLIERY, #20 | ASHLEY | PA |
MAYER CHINA COMPANY | BEAVER FALLS | PA |
MC AVEY BRICK CO | PHOENIXVILLE | PA |
MC CLASKEY & CO | PHILADELPHIA | PA |
MC CONWAY & FORLEY CORP | PITTSBURGH | PA |
MC CONWAY & TURLEY CORP | PITTSBURGH | PA |
MC CULLOUGH IRON COMPANY | PHILADELPHIA | PA |
MC CUSKER T J INC | W MIFFLIN | PA |
MC CUSKER T J INC | W. MIFFLIN | PA |
MC DANIEL AND HARVEY | PHILADELPHIA | PA |
MC DOWELL PAPER COMPANY | MANAYUNK | PA |
Mc Kay Co | York | PA |
Mc Keesport Coating Co | Mc Keesport | PA |
MCARDLE & COONEY INC. | PHILADELPHIA | PA |
MCCAHAN SUGAR COMPANY | PHILADELPHIA | PA |
MCCAHAN SUGAR REFINING AND MOLASSES COMPANY | PHILADELPHIA | PA |
McCann Shields Paint Co. | Pittsburgh | PA |
Mccarter Iron | Norristown | PA |
MCCARTER IRON WORKS | MORRISTOWN | PA |
MCCARTER IRON WORKS | NORRISTOWN | PA |
MCCLAIR, BROOKS AND COMPANY | SCRANTON | PA |
MCCLASKEY & CO | PHILIDELPHIA | PA |
MCCLASKEY & CO | PHILADELPHIA | PA |
MCCLAVE BROOKS AND COMPANY | SCRANTON | PA |
MCCLELLAN STORAGE YARD | MCCLELLAN | PA |
MCCLINTIC-MARSHALL CONSTRUCTION COMPANY – STEEL PLANT | POTTSTOWN | PA |
MCCLINTIC-MARSHALL CONSTRUCTION COMPANY – STEEL PLANT | CARNEGIE | PA |
MCCLOSKEY VARNISH COMPANY | PHILADELPHIA | PA |
MCCLURE COMPANY | WASHINGTON | PA |
MCCONNELL ASBESTO AND COVERING COMPANY | ETNA | PA |
McConnellsburg Medical Center | McConnellsburg | PA |
MCCONOVAY AND TORLEY CORP | PITTSBURG | PA |
MCCONOVAY AND TORLEY CORP | PITTSBURGH | PA |
MCCONWAY & TORLEY CORP | PITTSBURGH | PA |
MCCONWAY AND FORLEY COMPANY | PITTSBURGH | PA |
MCCONWAY AND TORLEY CORPORATION | PITTSBURGH | PA |
MCCONWAY-TORLEY | PITTSBURGH | PA |
MCCRACKEN STARK AND COMPANY | PHILADELPHIA | PA |
MCCREARY TIRE & RUBBER CO | INDIANA | PA |
MCDOWELL PAPER MILLS | MANAYUNK | PA |
McEnery Co. | Erie | PA |
MCFADDEN JAMES E INC | PHILADELPHIA | PA |
MCGRAW EDISON COMPANY | PITTSBURGH | PA |
MCGRAW EDISON COMPANY – POWER SYSTEMS DIV | CANONSBURG | PA |
Mcgraw-Edison | Canonsburg | PA |
McGraw-Edison Power Systems | Canonsburg | PA |
MCGREW PARKINSON AND COMPANY | MONONGAHELA | PA |
MCGUINNES COMPANY | PITTSBURGH | PA |
MCKAY CORPORATION | YORK | PA |
MCKEAN OIL PLANT | FARMERS VALLEY | PA |
MCKEAN, NEWHALL AND BORIE | PHILADELPHIA | PA |
MCKEE DIVISION | JEANNETTE | PA |
MCKEES ROCKS IND ENTERPRISES – BLDG 45 | MCKEES ROCKS | PA |
MCKEESPORT AND YOUGHIOGHENY ICE COMPANY | MCKEESPORT | PA |
MCKEESPORT BOARD OF WATER AND LIGHTING – PUMPING STATION | MCKEESPORT | PA |
McKeesport Hospital | Pittsburgh | PA |
MCKEESPORT HOSPITAL | MCKEESPORT | PA |
MCKEESPORT MANUFACTURING COMPANY | MCKEESPORT | PA |
MCKEESPORT TIN PLATE COMPANY | MCKEESPORT | PA |
MCKEESPORT WATER PURIFICATION WORKS | MCKEESPORT | PA |
MCKEESPORT WORKS | MCKEESPORT | PA |
MCKINLEY ELEMENTARY SCHOOL | YORK | PA |
MCKINNEY MANUFACTURING COMPANY | ALLEGHENY | PA |
McLanahan Corp. | Hollidaysburg | PA |
MCLAUGHLIN BROTHERS | PHILADELPHIA | PA |
MCLEAN NEWHALL AND BORIE | PHILADELPHIA | PA |
MEADOWVALE SCHOOL, MESSENGER ST. | JOHNSTOWN | PA |
MEADVILLE FORGING CO | MEADVILLE | PA |
MEATA MACHINE CO | NEW CASTLE | PA |
Mechanical Insulation Co | Lester | PA |
Mechanical Insulation Co | Philadelphia | PA |
Mechanical Insulation Co | Plymouth Meeting | PA |
MECHANICAL INSULATION CO. | LESTER | PA |
Mechanical Insulation Company | Philadelphia. Pa & Lester | PA |
Mechanicsburg Navy Depot | Mechanicsburg | PA |
Medal Distributing Co | Sharon | PA |
MEDFORD’S INC. | CHESTER | PA |
MEDICAL PAVILION – HOSPITAL | PITTSBURGH | PA |
MEDIUM VOLTAGE SWGR. DEPARTMENT | PHILADELPHIA | PA |
Medusa Cement Co., Division of Medusa Corp – Wampum Plant | Wampum | PA |
Medusa Cement Company | York | PA |
MEDUSA PORTLAND CEMENT | WAMPUN | PA |
MEDUSA PORTLAND CEMENT CO | WEST YORK | PA |
MEDUSA PORTLAND CEMENT COMPANY | WEST YORK | PA |
MEDUSA PORTLAND CEMENT COMPANY | WAMPUM | PA |
MEDUSA PORTLAND CEMENT COMPANY | YORK | PA |
MEGARGEE PAPER COMPANY | EDGELY | PA |
MEGARGEE PAPER MILLS | TULLYTOWN | PA |
MEILI & WORTHINGTON | HATBORO | PA |
MELLON BANK, OLD USS BUILDING | PITTSBURGH | PA |
Mellon Institute of Industrial Research | Pittsburgh | PA |
MELLON INSTITUTE OF INDUSTRIAL RESEARCH BUILDING | PITTSBURGH | PA |
MELVILLE CORBETT COMPANY | KAULMONT, ELK COUNTY | PA |
Memorial Hospital – Boiler Room Ceiling | Johnstown | PA |
MENS HOUSE OF DETENTION | PHILADELPHIA | PA |
Mercer Alloys | Greenville | PA |
MERCER COUNTY COURT HOUSE | MERCER | PA |
MERCER COUNTY LIGHT COMPANY – POWER PLANT | GREENVILLE | PA |
MERCER LIME & STONE CO | PITTSBURGH | PA |
MERCER LIME AND STONE CO | PITTSBURGH | PA |
MERCHANT SHIPBUILDING CORPORATION | BRISTOL | PA |
MERCHANTS COAL COMPANY | BOSWELL | PA |
MERCHANTS COAL COMPANY | STOYESTOWN | PA |
MERCHANTS COAL COMPANY OF PENNSYLVANIA | BOSWELL | PA |
MERCHANTS SHIP BUILDING CORPORATION | BRISTOL | PA |
Merck & Co. | Danville | PA |
Merck & Company, Inc. | Riverside | PA |
Merck And Company | Riverside | PA |
Merck And Company | Danville | PA |
MERCK AND COMPANY | LANSDALE | PA |
MERCK AND COMPANY | WEST POINT | PA |
MERCK AND COMPANY PLANT | DANVILLE | PA |
MERCK AND COMPANY, BUILDING #2 | WEST POINT | PA |
MERCK AND COMPANY, INCORPORATED | WEST POINT | PA |
MERCK AND COMPANY, INCORPORATED | RIVERSIDE BOROUGH | PA |
Merck Chemical | Danville | PA |
MERCK SHARPE & DOHME | WEST POINT | PA |
MERCK SHARPE & DOHME – BUILDING 65 – CAT HOME | WEST POINT | PA |
MERCK SHARPE & DOHME, BUILDING 65, CAT HOME | WEST POINT | PA |
MERCK, SHARP AND DOHME | WEST POINT | PA |
Merck, Sharpe and Dohme | West Point | PA |
MERCY HOSPITAL | PITTSBURGH | PA |
MERCY HOSPITAL | ALTOONA | PA |
Mercy-Douglass Hospital | Philadelphia | PA |
MERION AND RADNOR GAS AND ELECTRIC COMPANY – POWER PLANT | WAYNE | PA |
MERMOUNT GARDENS | BRYN MAWR | PA |
MERRICK CHEMICAL PLANT | DANVILLE | PA |
MERRITT CHAPMAN & SCOTT | MILTON | PA |
Messinger Bearings, Inc. | Philadelphia | PA |
Mesta Machine | Homestead | PA |
MESTA MACHINE CO | HOMESTEAD | PA |
MESTA MACHINE CO | ALL PA LOCATIONS | PA |
MESTA MACHINE CO | NEW CASTLE | PA |
MESTA MACHINE CO (a/k/a United Engineering & Foundry Co.) | NEW CASTLE | PA |
MESTA MACHINE CO (a/k/a United Engineering & Foundry Co.) | PITTSBURGH | PA |
Mesta Machine Co. | Pittsburg/Homestead | PA |
MESTA MACHINE CO. | HOMESTEAD | PA |
Mesta Machine Company | Homestead | PA |
Mesta Machine Company | Pittsburgh | PA |
MESTA MACHINE CORP | HOMESTEAD | PA |
MESTA MACHINE CORP | NEW CASTLE | PA |
METAL BANK OF AMERICA | PHILADELPHIA | PA |
METAL TREATING CO | PITTSBURGH | PA |
METHACTON HIGH SCHOOL | FAIRVIEW VILLAGE | PA |
METHODIST TOWERS – WEST 8TH STREET | ERIE | PA |
Metropolital Edision | Williamsburg | PA |
Metropolital Edision | Homer City | PA |
Metropolitan Edison – G.E. Titus Station Turbine | Philadelphia | PA |
METROPOLITAN EDISON – THREE MILE ISLAND NUCLEAR GENERATING STATION | MIDDLETOWN | PA |
METROPOLITAN EDISON – THREE MILE ISLAND NUCLEAR GENERATING STATION – UNIT 1 | MIDDLETOWN | PA |
METROPOLITAN EDISON – YORK HAVEN PLANT | YORK | PA |
Metropolitan Edison Co | Reading | PA |
Metropolitan Edison Co | Middletown | PA |
METROPOLITAN EDISON CO – EYLER STATION STOREHOUSE | WEST READING | PA |
METROPOLITAN EDISON CO – PORTLAND GENERATING STATION | PORTLAND | PA |
METROPOLITAN EDISON CO – PORTLAND GENERATING STATION – UNIT #1 | PORTLAND | PA |
METROPOLITAN EDISON CO – PORTLAND GENERATING STATION – UNIT #2 | PORTLAND | PA |
METROPOLITAN EDISON CO – PORTLAND GENERATING STATION BETHEL TWP | PORTLAND | PA |
METROPOLITAN EDISON CO – PORTLAND GENERATING STATION UNIT 2 | PORTLAND | PA |
METROPOLITAN EDISON CO – TITUS STATION | READING | PA |
METROPOLITAN EDISON CO – TITUS STATION – PLANT SUPERINTENDENT | READING | PA |
METROPOLITAN EDISON CO – UNIT #1 | PORTLAND | PA |
Metropolitan Edison Co. – Titus Station | Reading | PA |
Metropolitan Edison Co.- Portland Generating Station | Portland | PA |
Metropolitan Edison Co., Titus Station | Reading | PA |
Metropolitan Edison Company | Williamsburg | PA |
Metropolitan Edison Company | Homer City | PA |
Metropolitan Edison Company | Reading | PA |
METROPOLITAN EDISON COMPANY | PORTLAND | PA |
METROPOLITAN EDISON COMPANY | UPPER MOUNT BETHEL | PA |
METROPOLITAN EDISON COMPANY | WEST READING | PA |
METROPOLITAN EDISON COMPANY – GENERATING STATION | READING | PA |
Metropolitan Edison Company – Portland Generating Station | Mt. Bethel | PA |
METROPOLITAN EDISON COMPANY – PORTLAND POWER PLANT | UPPER MOUNT BETHEL | PA |
METROPOLITAN EDISON COMPANY – PORTLAND STATION | PORTLAND | PA |
METROPOLITAN EDISON COMPANY – THREE MILE ISLAND | MIDDLETOWN | PA |
Metropolitan Edison Company – Titus Station | Reading | PA |
METROPOLITAN EDISON COMPANY – TURBINE REPAIR | PHILADELPHIA | PA |
METROPOLITAN EDISON COMPANY, DOCK ST. STATION | EASTON | PA |
METROPOLITAN EDISON COMPANY, PORTLAND STATION | PORTLAND | PA |
METROPOLITAN EDISON COMPANY, THREE MILE ISLAND | MIDDLETOWN | PA |
METROPOLITAN EDISON COMPANY, TITUS STATION | READING | PA |
METROPOLITAN EDISON POWER – BRUNNERS ISLAND | YORK HAVEN | PA |
Metropolitan Edison Power Plant | Portland | PA |
METROPOLITAN EDISON-TMI | HARRISBURG | PA |
METROPOLITAN HOSPITAL – 8TH & RACE STREETS | PHILADELPHIA | PA |
MEYER ZAUSNER INC | NEW HOLLAND | PA |
MEYERSDALE JR.-SR. HIGH SCHOOL | MEYERSDALE | PA |
MICHAEL FLYNN | PHILADELPHIA | PA |
MICHAEL FLYNN MFG | PHILADELPHIA | PA |
MICHIGAN CHEMICAL COMPANY | PITTSBURGH | PA |
Michigan Limestone And Chemical | Annandale | PA |
MIDDLE CREEK ELECTRIC COMPANY – POWER PLANT | NORTHUMBERLAND | PA |
MIDDLE SCHOOL – ROUTE 30 | IMPERIAL | PA |
MIDDLETOWN CAR COMPANY | MIDDLETOWN | PA |
MIDDLETOWN CAR WORKS | MIDDLETOWN | PA |
MIDDLETOWN ELEM. SCHOOL | LANGHORN | PA |
MIDDLETOWN ELEM. SCHOOL | MIDDLETOWN TWSHP. | PA |
MIDDLETOWN ELEMENTARY SCHOOL | MIDDLETOWN | PA |
MIDDLETOWN SCHOOL | BORNSTEIN | PA |
Midland Ross | Sharon | PA |
MIDLAND STEEL COMPANY | MIDLAND | PA |
MIDLAND WORKS | MIDLAND | PA |
MIDLAND-ROSS CORP | PITTSBURGH | PA |
MIDUALE-HEPPENSTAHL | PHILADELPHIA | PA |
MIDVALE COMPANY | NICETOWN, PHILADELPHIA | PA |
MIDVALE COMPANY | PHILADELPHIA | PA |
MIDVALE HEPPENSTALL CO | NICETOWN PHIL | PA |
MIDVALE HEPPENSTALL COMPANY | EDDYSTONE | PA |
MIDVALE HEPPENSTALL COMPANY | PHILADELPHIA | PA |
MIDVALE HEPPENSTALL COMPANY | NICETOWN, PHILADELPHIA | PA |
Midvale Steel | Nicetown | PA |
MIDVALE STEEL AND ORDNANCE COMPANY | NICETOWN | PA |
MIDVALE STEEL AND ORDNANCE COMPANY | PHILADELPHIA | PA |
MIDVALE STEEL COMPANY | PHILADELPHIA | PA |
MIDVALE STEEL COMPANY | NICETOWN | PA |
MIDVALEE HEPPENSTALL COMPANY | NICETOWN, PHILADELPHIA | PA |
MIDVALLEY COAL COMPANY | PHILADELPHIA | PA |
MIDVALLEY COAL COMPANY | WILBURTON | PA |
MIDVALLEY COAL COMPANY | CENTRALIA | PA |
MIDVALLEY COAL COMPANY | MAUCH CHUNK | PA |
MIDVALLEY COAL COMPANY | MT. CARMEL | PA |
MIDVALLEY COAL COMPANY | CENTRALIA STATION | PA |
MIDVALLEY COAL COMPANY | WILLBURTON | PA |
MIDWEST GENERATION – HOMER CITY GENERATION STATION | HOMER CITY | PA |
MILBON MANUFACTURING COMPANY | MILBON | PA |
MILCO UNDERGARMENT CO. | BLOOMSBURG | PA |
Milesburg Power Plant | Milesburg | PA |
MILL #4 | MARTINS CREEK | PA |
MILL CREEK COAL COMPANY | NEW BOSTON | PA |
MILL CREEK COAL COMPANY | DELANO | PA |
MILL CREEK COAL COMPANY | VULCAN | PA |
MILL CREEK POWER HOUSE | JOHNSTOWN | PA |
MILL CREEK SCHOOL | ERIE | PA |
Millard Quarry | Annville | PA |
MILLBOURNE MILLS | PHILADELPHIA | PA |
Millcreek Mall | Erie | PA |
MILLER GAS & OIL | SHAMOKIN | PA |
MILLER PLANNER BLDG | MARKLEYSBURG | PA |
MILLER PLANNER BLDG – AUXILIARY BOILER | MARKLEYSBURG | PA |
Miller Printing Machinery Company | Pittsburgh | PA |
MILLER QUARRIES INC. | RUSHLAND | PA |
MILLER ROBERT L | MECHANICSBURG | PA |
MILLERSVILLE UNIVERSITY – ARTS BUILDING | MILLERSVILLE | PA |
MILLERSVILLE UNIVERSITY – WOMEN’S DORM | MILLERSVILLE | PA |
MILLIAM A COLLIERY LIGHT AND POWER | JUNCTION | PA |
MILLIKEN HOSPITAL BOILER ROOM | POTTSVILLE | PA |
MILTON MANUFACTURING | MILTON | PA |
MILTON MANUFACTURING CO. | MILTON | PA |
MILTON MANUFACTURING COMPANY | MILTON | PA |
Minard Run Oil Company | Bradford | PA |
MINE SAFETY APPLIANCE CO | CALLERY | PA |
MINE SAFETY APPLIANCE CO | PITTSBURGH | PA |
MINE SAFETY APPLIANCE CO | PHILADELPHIA | PA |
MINE SAFETY APPLIANCE COMPANY | PITTSBURGH | PA |
MINE SAFETY APPLIANCES CO | PITTSBURGH | PA |
MINE SAFETY APPLIANCES CO – ATEC BLDG. | PITTSBURGH | PA |
MINERAL RAILROAD AND MINING COMPANY | SHAMOKIN | PA |
MINERAL RAILROAD AND MINING COMPANY | WILKES BARRE | PA |
MINERAL SPRING COLLIERY | WILKES BARRE | PA |
MINNEPOLIS HONEYWELL REG. CO. – BROWNS INSTRUMENT DIVISION | PHILADELPHIA | PA |
Minnesota Mining & Manufacturing Company | Bristol | PA |
Minnesota Mining and Manufacturing Co | Bristol | PA |
MINNOTTE MFG CORP | PITTSBURGH | PA |
MINOTTE BROTHERS COMPANY | PITTSBURGH | PA |
Mira Bell, Inc. | Philadelphia | PA |
MISERACORDIA – STUDENT UNION & DORMS | KINGSTON | PA |
MISSILE MASTER FACILITIES | OAKDALE | PA |
Mitchell Power Station | Courtney | PA |
Mitchell Power Station | Monongahela | PA |
MITCHELL POWER STATION – WASHINGTON COUNTY | COURTNEY | PA |
MITCHELL POWER STATION, WASHINGTON COUNTY | COURTNEY | PA |
MITCHELL, FLETCHER AND COMPANY | PHILADELPHIA | PA |
MOBAY CHEMICAL COMPANY | PITTSBURGH | PA |
MOBIL | PHILADELPHIA | PA |
MOBIL OIL CO | PHILADELPHIA | PA |
Model Coat & Apron Co. | Pittsburgh | PA |
MODEL LAUNDRY AND DRY CLEANING COMPANY | JEANNETTE | PA |
MOE & CO A | PHILADELPHIA | PA |
MOE A & CO | PHILADELPHIA | PA |
MOHAWK VALLEY BREWING COMPANY | PHILADELPHIA | PA |
Molded Materials Div., | Ridgway | PA |
Monahan Insulation Company | Pittsburgh | PA |
MONESSEN STEEL COMPANY | MONESSEN | PA |
MONESSEN WORKS | MONESSEN | PA |
MONONGAHELA CONNECTING RAILROAD COMPANY | PITTSBURGH | PA |
MONONGAHELA ELECTRIC LIGHT COMPANY – LIGHT PLANT | MONONGAHELA | PA |
MONONGAHELA FURNACE | MCKEESPORT | PA |
MONONGAHELA FURNACES | MCKEESPORT | PA |
MONONGAHELA INCLINE PLANE COMPANY | PITTSBURGH | PA |
MONONGAHELA LIGHT AND POWER COMPANY | PITTSBURGH | PA |
MONONGAHELA LIGHT AND POWER COMPANY | RANKIN | PA |
MONONGAHELA MELTING COMPANY | ALTOONA | PA |
MONONGAHELA POWER COMPANY | MASONTOWN | PA |
Monongahela Railway | Brownsville | PA |
MONONGAHELA RIVER CONSOLIDATED COAL AND COKE COMPANY | CALIFORNIA | PA |
MONONGAHELA RIVER CONSOLIDATED COAL AND COKE COMPANY | PITTSBURGH | PA |
MONONGAHELA STREET RAILWAY COMPANY | PITTSBURGH | PA |
MONONGAHLEA ELECTRIC LIGHT AND POWER COMPANY – GAS AND ELECTRIC LIGHT PLANT | HOMESTEAD | PA |
Monongalia & Ohio Dredging Company | Pittsburgh | PA |
MONROE SHIP SUPPLY | PHILADELPHIA | PA |
MONROEVILLE HIGH SCHOOL | MONROEVILLE | PA |
Monroeville Mall | Monroeville | PA |
MONROEVILLE MALL – GIMBELS DEPARTMENT STORE | MONROEVILLE | PA |
MONSANTO CHEMICAL CO. | PHILADELPHIA | PA |
Monsey Products | Kimberton | PA |
Monsey Products | Wissahicken | PA |
Monsey Products Company | Philadelphia | PA |
MONT ALTO SANITARIUM | MONT ALTO | PA |
MONTEFOIRE HOSPITAL | PITTSBURGH | PA |
MONTGOMERY COUNTY COURTHOUSE | MORRISTOWN | PA |
MONTGOMERY COUNTY COURTHOUSE – EAST AIRY STREET | NORRISTOWN | PA |
MONTGOMERY IRON COMPANY | PORT KENNEDY | PA |
MONTOUR | WASHINGTONVILLE | PENNSYLVANIA |
MONTOUR CTY | DANVILLE | PA |
Montour Power Plant | Washingtonville | PA |
MONTOUR STEAM STATION-PA POWER & LIGHT | WASHINGTONVILLE | PA |
MONTOUR STEEL AND IRON COMPANY | DANVILLE | PA |
Moore Street Elementary School | Millersburg | PA |
MOOREHEAD BROTHERS AND COMPANY | PITTSBURGH | PA |
MOORHEAD BROTHERS | SHARPSBURG | PA |
MOORHEAD BROTHERS AND COMPANY | SHARPSBURG | PA |
MORADO | BEAVER COUNTY | PA |
MORAVIAN COLLEGE | BETHLEHEM | PA |
MORAVIAN COLLEGE, SCIENCE BUILDING | BETHLEHEM | PA |
MORGAN PAPER COMPANY | LITITZ | PA |
MORGANTHALER BROTHERS | PHILADELPHIA | PA |
MORGENTHALER BROTHERS | PHILADELPHIA | PA |
MORGENTHALER ICE MANUFACTURING COMPANY | PHILADELPHIA | PA |
MORMACBAY | CHESTER | PA |
MORMACCOVE | CHESTER | PA |
MORMACLAKE | CHESTER | PA |
MORMACPRIDE | CHESTER | PA |
MORMACSCAN | CHESTER | PA |
MORMACTRADE | CHESTER | PA |
MORO PHILLIPS | PHILADELPHIA | PA |
MORRELL FELIN MEAT PACKERS | PHILADELPHIA | PA |
Morrellsville Colliery | Nantyglo | PA |
MORRIS SCHOOL – 26TH & THOMPSON | PHILADELPHIA | PA |
Morristown High School | PA | |
MORRISVILLE HIGH SCHOOL | MORRISVILLE | PA |
Moss Rehabilitation Hospital | Philadelphia | PA |
Moss-Rose Manufacturing Company | Philadelphia | PA |
Mother of Divine Grace | Philadelphia | PA |
Motion Control (Molded Materials) | Ridgeway | PA |
Motor Coils Mfg Co | Emporium | PA |
Motor Coils Mfg Co | Evans City | PA |
Motorola | Carlisle | PA |
MOUNT ALTO SANITARIUM | MONT ALTO PARK | PA |
MOUNT ALTO SANTARIUM | MONT ALTO PARK | PA |
MOUNT HOLLY SPRINGS | CUMBERLAND COUNTY | PA |
MOUNT JESSEYS COAL COMPANY | PECKVILLE | PA |
MOUNT LEBANON HIGH SCHOOL – COCHRAN ROAD | MOUNT LEBANON | PA |
MOUNT LEBANOUS ICE COMPANY | MT. LEBANON | PA |
MOUNT LOOKOUT COAL COMPANY | WYOMING | PA |
MOUNT MERCY COLLEGE – GRACE LIBRARY | PITTSBURGH | PA |
MOUNT MORICH | PHILADELPHIA | PA |
MOUNT PLEASANT ELECTRIC LIGHT AND POWER COMPANY – ELECTRIC LIGHT PLANT | MT. PLEASANT | PA |
MOUNT SINAI HOSPITAL | PHILADELPHIA | PA |
MOUNT ST. JOSEPH ACADEMY | PHILADELPHIA | PA |
Mountain View Center, Inc. | Kylertown | PA |
MRS PAUL`S FROZEN FOODS – TABOR ROAD | PHILADELPHIA | PA |
Msa | Evans City | PA |
MUHLENBERG COLLEGE – SHANKWEILER BIOLOGY BUILDING | ALLENTOWN | PA |
MUHLENBERG HIGH SCHOOL | PHILADELPHIA | PA |
MUHLENBURG COLLEGE – BIOLOGY LABORATORY | ALLENTOWN | PA |
MULLIGAN HAROLD B | PHILADELPHIA | PA |
MULLIGAN HAROLD R | PHILADELPHIA | PA |
MULLINS MANUFACTURING CO | HAYS | PA |
MUNCIPAL HOSPITAL | PHILADELPHIA | PA |
MUNICIPAL HOSPITAL | PHILADELPHIA | PA |
MUNICIPAL SERVICE BLDG CITY HALL | PHILADELPHIA | PA |
MUNICIPAL SERVICES BUILDING | PHILADELPHIA | PA |
Munition Plant | Tacony | PA |
MURRAY BODY COMPANY | SCRANTON | PA |
MURRAY CORPORATION | SCRANTON | PA |
MUSKIN COAL MINING COMPANY | CAIRNBROOK | PA |
MUSKIN MFG CO (a/k/a Wilkes Barre Lace Mfg) | WILKES BARRE | PA |
MUSSER’S MARKET – FRIENDLY DRIVE | QUARRYVILLE | PA |
MUTUAL CHEMICAL DIVISION OF ALLIED CHEMICAL AND DYE | PHILADELPHIA | PA |
MUTUAL RENDERING CO | PHILADELPHIA | PA |
MUTUAL SHOEMAKER CO | PHILADELPHIA | PA |
N H Robertson Co | Ambridge | PA |
N. AND G. TAYLOR COMPANY | PHILADELPHIA | PA |
N. S. | PITTSBURGH | PA |
N. SNELLENBURG AND COMPANY | PHILADELPHIA | PA |
N.R.S. YEWDALL | PHILADELPHIA | PA |
Nabisco | Philadelphia | PA |
Nancy Corporation | Summerville | PA |
Narco | Curwensville | PA |
Narco | Womelsdorf | PA |
NARCO PLANT – WOMELSDORF PLANT | WOMELSDORF | PA |
NATHAN R. YEWDALL | PHILADELPHIA | PA |
National Airoil Burner Co | Philadelphia | PA |
NATIONAL ANILINE AND CHEMICAL COMPANY | MARCUS HOOK | PA |
NATIONAL ANILINE DIVISION – USS CHEMICALS | MCKEES ROCKS | PA |
NATIONAL BISCUIT COMPANY | PHILADELPHIA | PA |
NATIONAL BISCUIT COMPANY | NORTH PHILADELPHIA | PA |
NATIONAL BISCUIT COMPANY | EAST LIBERTY | PA |
NATIONAL BISCUIT COMPANY | PITTSBURGH | PA |
NATIONAL BISCUIT COMPANY – CRACKER BAKERY | PITTSBURGH | PA |
National Biscuit Plant | Pittsburg | PA |
NATIONAL BOND INSULATORS, INC. | ALLENTOWN | PA |
NATIONAL BORAX COMPANY | LANCASTER | PA |
NATIONAL CAN | FAIRLESS HILLS | PA |
NATIONAL CASKET COMPANY, INCORPORATED | PITTSBURGH | PA |
National Casting | Sharon | PA |
NATIONAL CONTAINER COMPANY | BRISTOL | PA |
NATIONAL CRICIBLE CO | PHILADELPHIA | PA |
NATIONAL CRUCIBLE COMPANY | PHILADELPHIA | PA |
NATIONAL DISTILLERS PRODUCTS CORPORATION | BROAD FORD | PA |
NATIONAL DRUG CO – RESEARCH & DEVELOPMENT BLDG. | SWIFTWATER | PA |
National Drug Co. – Manufacturing Plant | SWIFTWATER | PA |
NATIONAL DRUG COMPANY | CENTER VALLEY | PA |
NATIONAL DRYING MACHINE PLANT | PHILADELPHIA | PA |
NATIONAL ELECTRIC PRODUCTS CO. | AMBRIDGE | PA |
National Electric Products Company – Manufacturing Facility | Ambridge | PA |
NATIONAL ELECTRIC PRODUCTS CORP | AMBRIDGE | PA |
NATIONAL FOAM CO | WEST CHESTER | PA |
NATIONAL FOOD PRODUCTS | BEACH GLEN | PA |
National Forge & Ordnance | Irvine | PA |
NATIONAL FORGE AND ORDNANCE CO. | IRVIN | PA |
NATIONAL FORGE AND ORDNANCE CO. | IRVINE | PA |
NATIONAL FORGE AND ORDNANCE COMPANY | IRVINE | PA |
NATIONAL FORGE CO. | IRVINETON | PA |
NATIONAL FORGE COMPANY | IRVINE | PA |
NATIONAL GALVANIZING CO | PITTSBURGH | PA |
NATIONAL GALVANIZING CO | PITTSBURHG | PA |
NATIONAL GALVANIZING WORKS | MCKEESPORT | PA |
NATIONAL GYPSUM CO. – BOILER HOUSE | NEW COLUMBIA | PA |
NATIONAL GYPSUM COMPANY | MILTON | PA |
National Heat & Power | Philadelphia | PA |
NATIONAL LEAD AND OIL COMPANY | ALLEGHENY | PA |
NATIONAL LEAD CO | PHILADELPHIA | PA |
NATIONAL LEAD CO – BLDG #30 | PHILADELPHIA | PA |
NATIONAL LEAD CO – BLDG #9 | PHILADELPHIA | PA |
NATIONAL LEAD CO. | PITTSBURGH | PA |
NATIONAL LEAD COMPANY – DUST ARRESTER & CONICAL HOPPER | PHILADELPHIA | PA |
NATIONAL LEAD COMPANY, DUST ARRESTER & CONICAL HOPPER | PHILADELPHIA | PA |
NATIONAL LEAD DOEHLER JARVIS CIV | POTTSTOWN | PA |
NATIONAL MALLEABLE | Sharon | PA |
NATIONAL MINING COMPANY | PITTSBURGH | PA |
NATIONAL MINING COMPANY | SUGAR STATION | PA |
NATIONAL MINING COMPANY | SYGAM | PA |
NATIONAL MINING COMPANY | TRAVESKYN | PA |
NATIONAL MOLASSES | PHILADELPHIA | PA |
NATIONAL MOLLASES | PHILADELPHIA | PA |
National Paper Company | Ransom | PA |
National Plastics Company | Jeannette | PA |
National Portland Cement | Bethlehem | PA |
National Portland Cement Co | Bethlehem/Brodhead | PA |
NATIONAL PORTLAND CEMENT COMPANY | HECKTOWN | PA |
NATIONAL ROLL DIVISION | AVONMORE | PA |
NATIONAL ROLLING MILL | MCKEESPORT | PA |
National Standard | Mount Joy | PA |
National Steel | Pittsburgh | PA |
NATIONAL STEEL COMPANY | PITTSBURGH | PA |
NATIONAL STEEL COMPANY | SHARON | PA |
NATIONAL STEEL COMPANY | NEW CASTLE | PA |
National Steel Service Center, Inc. | New Castle | PA |
National Sugar | Philadelphia | PA |
NATIONAL SUGAR REFINERY | PHILADELPHIA | PA |
NATIONAL SUGAR REFINERY COMPANY | PHILADELPHIA | PA |
NATIONAL SUGAR REFINING CO | PHILADELPHIA | PA |
National Supply | Pittsburgh | PA |
National Supply Co. | Etna | PA |
National Supply Company | Ambridge | PA |
National Tube | Ellwood City | PA |
National Tube | Mckeesport | PA |
National Tube | Pittsburgh | PA |
National Tube Company | Pittsburgh | PA |
NATIONAL TUBE COMPANY | MCKEESPORT | PA |
NATIONAL TUBE COMPANY | PHILADELPHIA | PA |
NATIONAL TUBE COMPANY | CHESTER | PA |
NATIONAL TUBE COMPANY (a/k/a U.S. Steel) – Central Boiler House | McKeesport | PA |
National Tube Company (Division National Works) | McKeesport | PA |
NATIONAL TUBE COMPANY, MONONGAHELA FURNACES | MCKEESPORT | PA |
NATIONAL TUBE COMPANY, PENNSYLVANIA DEPARTMENT | PITTSBURGH | PA |
NATIONAL TUBE DIV | MCKEESPORT | PA |
NATIONAL TUBE DIVISION – U.S. STEEL CORPORATION NATIONAL WORKS | MCKEESPORT | PA |
National Tube Works | Mckeesport | PA |
NATIONAL TUBE WORKS COMPANY | MCKEESPORT | PA |
NATIONAL TUBE WORKS COMPANY | VERSAILLES | PA |
National Valve | Lawrenceville | PA |
NATIONAL VALVE | JOHNSTOWN | PA |
NATIONAL VALVE & MANUFACT | PITTSBURGH | PA |
NATIONAL VALVE AND MANUFACT | PITTSBURGH | PA |
National Vulcanized Fiber | Kennett Square | PA |
NATIONAL VULCANIZED FIBER COMPANY | YORKLYN | PA |
National Vulcanized Fibre | Kennett Square | PA |
NAVAL AVIATION SUPPLY DEPOT | PHILADELPHIA | PA |
NAVAL BOILER AND TURBINE LABORATORY SCHOOL | PHILADELPHIA | PA |
Naval Dry Dock | Philadelphia | PA |
Naval Engineering Center | Philadelphia | PA |
NAVAL ORDNANCE WORKS | MIDLAND | PA |
NAVAL SHIP ENGINEERING CENTER | PHILADELPHIA | PA |
NAVAL SUPPLY DEPOT | MECHANICSBURG | PA |
NAVAL SUPPLY DEPOT – BLDG 2 | PHILADELPHIA | PA |
Navy Regional Finance Center | Philadelphia | PA |
Navy Yard Dry Dock | Philadelphia | PA |
NAZARETH CEMENT CO | NAZARETH | PA |
NAZARETH CEMENT COMPANY | NAZARETH | PA |
Nazareth Hospital | Philadelphia | PA |
NAZARETH PORTLAND CEMENT COMPANY | NAZARETH | PA |
NAZARETH STEEL FABRICATORS | NAZARETH | PA |
NCC PET FOOD CORP LADDIE | PHILADELPHIA | PA |
NEALS WELDING AND FABRICAT | STEELTON | PA |
NEALS WELDING AND FABRICATING | STEELTON | PA |
NEATSFOOT OIL REFINERIES | PHILADELPHIA | PA |
NELSON VALVE COMPANY | CHESTNUT HILL | PA |
NELSON VALVE COMPANY | PHILADELPHIA | PA |
NESBITT MANUFACTURING COMPANY | PHILADELPHIA | PA |
Neshaminy High School | Langhorne | PA |
NESHAMINY MALL – STRAWBRIDGE AND CLOTHIER DEPARTMENT STORE | BENSALEM | PA |
Neshaminy Nursing | Doylestown | PA |
NESQUE | HOMINY | PA |
NEVILLE CHEMICAL CO – NEVILLE ISLAND | PITTSBURGH | PA |
NEVILLE CHEMICAL CO – NEVILLE ISLAND – STORE ROOM | PITTSBURGH | PA |
NEVILLE CHEMICAL COMPANY | PITTSBURGH | PA |
NEVILLE CHEMICAL COMPANY | NEVILLE ISLAND | PA |
NEVILLE CHEMICAL COMPANY – NEVILLE ISLAND PLANT | NEVILLE ISLAND | PA |
NEVILLE CHEMICAL PLANT | PITTSBURGH | PA |
NEVILLE COMPANY | NEVILLE ISLAND | PA |
NEVILLE ISLAND | PITTSBURGH | PA |
Neville Island Coke & Chemical | Neville Island | PA |
Neville Island Coke & Chemical | Pittsburgh | PA |
NEVILLE ST. APARTMENTS | PITTSBURGH | PA |
NEW A AND B FOUNDRY INC | CONNELLSVILLE | PA |
NEW AIR COND SYSTEM CLOSURE PLANT | LANCASTER | PA |
NEW CASTLE AND LOWELL RAILWAY COMPANY | EDINBURG | PA |
NEW CASTLE ELECTRIC COMPANY – ELECTRIC PLANT | NEW CASTLE | PA |
New Castle Junior High School | New Castle | PA |
NEW CASTLE LIGHT, HEAT, AND POWER COMPANY | NEW CASTLE | PA |
NEW CASTLE PORTLAND CEMENT COMPANY | NEW CASTLE | PA |
New Castle Refractories | New Castle | PA |
NEW CASTLE SHOVEL COMPANY | NEW CASTLE | PA |
NEW CASTLE STAMPING COMPANY | NEW CASTLE | PA |
NEW CASTLE WATER COMPANY – WATER PLANT | NEW CASTLE | PA |
New Cumberland Army Depot | New Cumberland | PA |
NEW CUMBERLAND GENERAL DEPOT – ARMY AVIATION FAC., HANGER & SHOPS | NEW CUMBERLAND | PA |
NEW DUQUESNE SCIENCE HALL | PITTSBURGH | PA |
NEW FEDERAL BLDG | PITTSBURGH | PA |
NEW FEDERAL OFFICE BUILDING | PHILADELPHIA | PA |
NEW JERSEY AND PENNSYLVANIA TRACTION COMPANY | YARDLEY | PA |
NEW JERSEY MILLS | PHILADELPHIA | PA |
NEW JERSEY ZINC | PALMERTON | PA |
NEW JERSEY ZINC CO | CENTER VALLEY | PA |
NEW JERSEY ZINC CO | PALMERTON | PA |
NEW JERSEY ZINC COMPANY | FRIEDENSVILLE | PA |
NEW JERSEY ZINC COMPANY | FREEMANSBURG | PA |
NEW JERSEY ZINC COMPANY | HAZARD | PA |
NEW JERSEY ZINC COMPANY | SOUTH BETHLEHEM | PA |
New Jersey Zinc Company – West Plant Slab Z | Palmerton | PA |
NEW JERSEY ZINC COMPANY OF PENNSYLVANIA | EAST PLANT, PLAMERTON | PA |
NEW JR HIGH SCHOOL | TROY | PA |
NEW OFFICE BLDG. | LANCASTER | PA |
NEW ORLEANS (USS) | PHILADELPHIA | PA |
New Oxford Junior High School | New Oxford | PA |
NEW PELLET PLANT | CORNWALL | PA |
NEW RIVER AND POCAHONTAS CONSOLIDATED COAL COMPANY | PHILADELPHIA | PA |
NEW SECONDARY SCHOOL | WYALUSING | PA |
NEW SENIOR HIGH SCHOOL | QUARRYVILLE | PA |
NEW SR. HIGH SCHOOL | LANCASTER | PA |
NEW STEEL BUILDING, SPANG STEEL COMPANY | BUTLER | PA |
New Williamsport High School | Williamsport | PA |
New Wilmington City Hall & Courthouse | New Wilmington | PA |
New York & Penna Co | Lock Haven | PA |
New York & Pennsylvania Co. | Lock Haven | PA |
NEW YORK & PENNSYLVANIA CO., INC. | JOHNSONBURG | PA |
NEW YORK & PENNSYLVANIA CO., INC. | LOCK HAVEN | PA |
NEW YORK & PENNSYLVANIA CO., INC. – CASTANEA MILL | LOCK HAVEN | PA |
NEW YORK & PENNSYLVANIA CO., INC. – CHEMICAL PILOT PLANT | LOCK HAVEN | PA |
NEW YORK & PENNSYLVANIA CO., INC. – LOCK HAVEN MILL | LOCK HAVEN | PA |
NEW YORK & PENNSYLVANIA CO., INC. – SEMICHEMICAL PILOT PLANT | LOCK HAVEN | PA |
NEW YORK & PENNSYLVANIA PAPER CO – BOILER ROOM | HAVEN | PA |
NEW YORK & PENNSYLVANIA PAPER CO – BOILER ROOM | LOCK HAVEN | PA |
NEW YORK AND PENNSYLVANIA COMPANY | JOHNSONBURG | PA |
NEW YORK PHILADELPHIA AND NORFOLK RAILWAY COMPANY | PHILADELPHIA | PA |
NEW YORK SHIPBUILDING COMPANY | PHILADELPHIA | PA |
NEW YORK STATE NATURAL GAS – LEIDY STATION | RENOVO | PA |
NEW YORK STATE NATURAL GAS – OAKFORD COMPRESSOR STATION | DELMONT | PA |
NEW YORK STATE NATURAL GAS – SABINSVILLE COMPRESSOR STATION | SABINSVILLE | PA |
NEW YORK STATE NATURAL GAS – TONKIN STATION | MURRAYSVILLE | PA |
New York State Natural Gas Company | Delmont | PA |
NEW YORK STATE NATURAL GAS CORPORATION – COMPRESSOR STATION | SABINSVILLE | PA |
NEW YORK STATE NATURAL GAS, 86 PUMP STATION LANE | LAWRENCEVILLE | PA |
NEW YORK WILKINS COMPANY ENGINEERS | PITTSBURGH | PA |
NEW YORK WIRE CLOTH COMPANY | YORK | PA |
NEWARK PROCESSING CO | CHESTER | PA |
NEWBURN GLASS COMPANY | ROYERSFORD | PA |
NEWCOR | MUELLER | PA |
NEWMAN & CO INC | PHILADELPHIA | PA |
NEWPORT (USS) | PHILADELPHIA | PA |
NEWTON COAL MINING COMPANY | PITTSTON | PA |
NICE BALL BEARING | KULPAVILLE | PA |
NICE BALL BEARING | KULPSVILLE | PA |
NICE BALL BEARING CO | PHILADELPHIA | PA |
NICETOWN | PHILADELPHIA | PA |
NICETOWN PLATE WASHER COMPANY | NICETOWN, PHILADELPHIA | PA |
NICHOLSON FILE COMPANY | PHILADELPHIA | PA |
NICHOLSON FILE COMPANY – RED LION & DECATUR ROADS | PHILADELPHIA | PA |
NICHOLSON FILE COMPANY, RED LION & DECATUR RDS. | PHILADELPHIA | PA |
Nickel Plumbing & Heating | Pittsburgh | PA |
Nicolet Industries | Ambler | PA |
Nicolet Industries | Norristown | PA |
Nicolet Industries | Lansdale | PA |
NICOLETTE INDUSTRIES | AMBLER | PA |
NILES BUILDING | PHILADELPHIA | PA |
NILES-BEMENT-POND COMPANY | PHILADELPHIA | PA |
NILES-BEMENT-POND COMPANY | NICETOWN | PA |
NIXON THEATRE | PITTSBURGH | PA |
NM. PENN COLLIERY | SHAFT | PA |
NO 2 SHAFT | WILLIAMSTOWN | PA |
NO AM REFR | CURWENSVILLE | PA |
NOAH BARLOW | PHILADELPHIA | PA |
Norfolk & Western Railway | Erie | PA |
NORFOLK SOUTHERN CORPORATION | HOLLIDAYSBURG | PA |
NORFOLK WESTERN RAILROAD | ERIE | PA |
NORFOLK WESTERN SHOPS | NOT PROVIDED | PA |
NORLAND SHIPPING & TRADING CO | MORRISVILLE | PA |
NORRIS SMELTING & REFINING | SWEDELAND | PA |
Norristown Hospital | Norristown | PA |
NORRISTOWN MAGNESIA AND ASBESTOS COMPANY | NORRISTOWN | PA |
Norristown Municipal Sanitation Department | Norristown | PA |
NORRISTOWN POST OFFICE | NORRISTOWN | PA |
Norristown State Hospital | Norristown | PA |
NORTH AMERICAN LACE COMPANY | PHILADELPHIA | PA |
NORTH AMERICAN REFR CO | WOMELSDORF | PA |
NORTH AMERICAN REFRACT CO | PITTSBURGH | PA |
North American Refractories | Womelsdorf | PA |
North American Refractory | Curwensville | PA |
NORTH AMERICAN ROCKWELL | READING | PA |
NORTH AMERICAN ROCKWELL CORP. | NEW CASTLE | PA |
NORTH BRANCH STEEL COMPANY | DANVILLE | PA |
NORTH BROTHERS COMPANY | COATESVILLE | PA |
NORTH BROTHERS MANUFACTURING COMPANY | PHILADELPHIA | PA |
NORTH CAMBRIA RAILWAY COMPANY | PITTSBURGH | PA |
NORTH CAMBRIA RAILWAY COMPANY | PATTON | PA |
North Cornwall Furnace | Cornwall | PA |
NORTH CORNWALL FURNACE COMPANY | CORNWALL | PA |
North Cumberland Company | Riverside | PA |
NORTH HUNTINGTON TWP HIGH SCHOOL | IRWIN | PA |
NORTH PIPE SHOP – STATION 270 | ALIQUIPPA | PA |
NORTH RESERVE BASIN | PHILADELPHIA | PA |
NORTH SEWICKLEY TOWNSHIP | BEAVER COUNTY | PA |
NORTH SIDE OF INDUSTRIAL HIGHWAY | EDDYSTONE | PA |
NORTH SIDE PACKING COMPANY | PITTSBURGH | PA |
NORTHAMPTON TRACTION COMPANY | EASTON | PA |
NORTHEAST HIGH SCHOOL – COTTMAN AVENUE | PHILADELPHIA | PA |
Northeast Water Pollution Control Plant | PHILADELPHIA | PA |
NORTHERN LIGHT (T-AK-284) | CHESTER | PA |
NORTHERN METALS COMPANY | TACONY | PA |
Northern Ore Co. | Easton | PA |
Northside Cooperage Company | Pittsburgh | PA |
NORTHVIEW HEIGHTS ELEMENTARY SCHOOL | PITTSBURGH | PA |
NORTHVIEW HOUSING, HAZLET AND SPRING HILL | PITTSBURGH | PA |
NORTHWEST COLLERY | CARBONDALE | PA |
NORTHWESTERN MINING AND EXCHANGE COMPANY | HELLEN MILLS | PA |
NORTHWESTERN PENNSYLVANIA RAILWAY COMPANY | MEADVILLE | PA |
NOSCO | ERIE | PA |
NOTTINGHAM COLLIERY | PLYMOUTH | PA |
NOVINGERS, INCORPORATED | HARRISBURG | PA |
NUCLEAR MAT & EQUIP CORP | APOLLO | PA |
NUCLEAR MATERIALS & EQUIPMENT | APOLLO | PA |
Nuclear Materials and Equipment Company – Apollo Plant | Apollo | PA |
NUCLEAR MATERIALS AND EQUIPMENT CORPORATION (NUMEC) – NUCLEAR PLANT | APOLLO | PA |
NUMBER 1 NUMBER 4 BLAST FURNACE | JOHNSTOWN | PA |
NUMBER 10 BREAKER | PITTSTON | PA |
NUMBER 2 SHAFT COLLIERY | KINGSTON | PA |
NUMBER 3 BOILDER HOUSE | NICETOWN, PHILADELPHIA | PA |
NUMBER 3 ROLLILNG MILL | JOHNSTOWN | PA |
NUMBER 4 BREAKER | KINGSTON | PA |
NUMBER 4 COLLIERY | KINGSTON | PA |
NUMBER 4 ROLLING MILL | JOHNSTOWN | PA |
NUMBER 5 AND NUMBER 6 BLAST FURNACE | JOHNSTOWN | PA |
NUMBER 6 BOLLIERY | PITTSTON | PA |
NUMBER 6 COLLIERY | INKERMAN | PA |
NUMBER 6 COLLIERY | PITTSTON | PA |
NUMBER 8 BOLLIERY | PITTSTON | PA |
NUMBER 8 GRUTIER MILL | JOHNSTOWN | PA |
NUMBER 9 BREAKER | PITTSTON | PA |
NUMBER 9 COLLIER | PETTSTON | PA |
NUMBER 9 COLLIERY NEAR | PITTSTON | PA |
NUTRITION PRODUCTS | PHILADELPHIA | PA |
NUTTAL WORKS | PITTSBURGH | PA |
NY & PA Co. | Johnsonburg | PA |
O AMOS CO DIV MCDONOUGH C | PHILADELPHIA | PA |
O C Cluss Lumber Co | Uniontown | PA |
O HORA JOHN F & SONS | SCRANTON | PA |
O HORA JOHN F AND SONS | SCRANTON | PA |
O. HOMMEL CO. | CARNEGIE | PA |
O.F. ZURN | PHILADELPHIA | PA |
Oak Summit Apartments | Philadelphia | PA |
O’BRIEN MACHINERY COMPANY | PHILADELPHIA | PA |
O’BRIEN RUBBER THREAD AND WEBBING COMPANY | CATASAUQUA | PA |
OCCIDENTAL CHEMICAL | POTTSTOWN | PA |
OCEAN COAL COMPANY | HERMINIE | PA |
OCEAN COAL COMPANY | PHILADELPHIA | PA |
OF AMERICA PARK WORKERS | PITTSBURGH | PA |
OFFICE & WHSE. R. C. A. | LANCASTER | PA |
OFFICE BUILDING – 1500 WALNUT STREET | PHILADELPHIA | PA |
OHIO AND PITTSBURGH MILK COMPANY | PITTSBURGH | PA |
OHIO PENNSYLVANIA SYSTEM | NEW CASTLE | PA |
OHIO SEVICE COMPANY | NEW PHILADELPHIA | PA |
OHIO SPRING SPECIALTIES | LEECHBURG | PA |
Oil City Glass Co Division Natl Can | Oil City | PA |
Oil City Glass Company | Oil City | PA |
OIL HEAT SERVICE | MIDDLEBURG | PA |
OIL WELL SUPPLY CO | OIL CITY | PA |
Oilwell Div Us Steel | Oil City | PA |
OKINAWA (USS) | PHILADELPHIA | PA |
Oklahoma Gas & Electric | Ponca City | PA |
Okonite Co. (Hazard Wire Rope) | Wilkes Barrre | PA |
OLD FORGE BREAKER | DUNMON | PA |
OLD FORGE COLLIERIES | NEW AVOCA | PA |
OLD FORGE COLLIERIES | SCRANTON | PA |
OLD FOURTH WARD SCHOOL | PITTSBURGH | PA |
OLD MEADOW WORKS | PITTSBURGH | PA |
Oldman Boiler Works | Erie | PA |
OLIN MATHIESON CHEMICAL | LAKE CHARLES | PA |
OLIN MATHIESON CHEMICAL CORP. | MCKEES ROCKS | PA |
OLIN PLANT | FOGELSVILLE | PA |
OLIVER AND ROBERTS WIRE COMPANY | PITTSBURGH | PA |
OLIVER AND SNYDER STEEL COMPANY | OLIVER | PA |
OLIVER AND SNYDER STEEL COMPANY | PITTSBURGH | PA |
OLIVER AND SNYDER STEEL COMPANY | ALLEGHENY | PA |
OLIVER BUILDING | PITTSBURGH | PA |
Oliver Iron & Steel Co. | Pittsburg | PA |
OLIVER IRON AND STEEL COMPANY | PITTSBURGH | PA |
OLIVER IRON MINING COMPANY | PITTSBURGH | PA |
OLIVER IRON STEEL COMPANY | PITTSBURGH | PA |
OLIVER NACE GREENHOUSE | PERKASIE | PA |
OLIVER SNYDER STEEL COMPANY | OLIVER | PA |
OLIVER WIRE COMPANY, LIMITED | PITTSBURGH | PA |
Olmstead Air Force Base | Middletown | PA |
OLNEY ANNEX HIGH SCHOOL – WYOMING AVENUE | PHILADELPHIA | PA |
OLNEY HIGH SCHOOL – FRONT & DUNCANNON STREETS | PHILADELPHIA | PA |
Olsen Industries Inc | Carengie | PA |
OLSON ENGINEERING | PITTSBURGH | PA |
OLSON ENGINEERING CO | PITTSBURGH | PA |
OLYPHANT COLLIERY | OLYPHANT | PA |
OLYPHANT POWER PLANT | OLYPHANT | PA |
OMAHA AND COUNCIL BLUFFS RAILWAY AND BRIDGE COMPANY | COUNCIL BLUFFS | PA |
ONDERDONK HEATING AND VENTILATING COMPANY | PHILADELPHIA | PA |
ONE OLIVER PLAZA BUILDING | PITTSBURGH | PA |
ONEIDA COLLIERY | ONEIDA | PA |
ONEIDA MINING | HOMER CITY | PA |
Oneida Mining Company | Armagh – Bush Valley | PA |
Onex Inc | Erie | PA |
ONOPONCA CITY | CHESTER | PA |
ONYX | ERIE | PA |
OPEN HEARTH DIVISION | HOMESTEAD | PA |
ORIENT COAL AND COKE COMPANY | NEW SALEM | PA |
ORIENT COAL AND COKE COMPANY | UNIONTOWN | PA |
ORIENT COKE COMPANY | UNIONTOWN | PA |
ORIENT COKE COMPANY | ORIENT | PA |
ORINOKA MILLS | PHILADELPHIA | PA |
ORION POWER HOLDINGS INCORPORATED | ELRAMA | PA |
ORION POWER HOLDINGS INCORPORATED | NEW CASTLE | PA |
ORION POWER MIDWEST, LLC | ELRAMA | PA |
ORION POWER MIDWEST, LLC | WEST PITTSBURGH | PA |
ORR & SEMBOWER INC | READING | PA |
ORR AND SEMBOWER INC | MIDDLETOWN | PA |
Orr Sembauer Co | Middletown | PA |
ORRTANNA CANNING COMPANY | ORRTANNA | PA |
OSBORN MACHINE CO. | DUBOIS | PA |
OSCAR MEYER MEATS | PHILADELPHIA | PA |
Oswald & Hess Company, Inc – 1314 Spring Garden Ave. | Pittsburgh | PA |
Otis Steel Co. | Pittsburg | PA |
Otto Milk Company | Pittsburgh | PA |
OUR LADY OF MERCY SCHOOL | MONROEVILLE | PA |
OUR LADY OF MT CARMEL CONVENT | CARBONDALE | PA |
OVERBROOK STEAM HEAT COMPANY – OVERBROOK HEATING PLANT | PHILADELPHIA | PA |
OVERBROOK STEAM HEAT COMPANY – POWER PLANT | PHILADELPHIA | PA |
OVERBROOK STEAM HEAT COMPANY – WOODBINE AVENUE & UPLANT WAY | PHILADELPHIA | PA |
OVERBROOK STEAM HEAT COMPANY, WOODBINE AVE. & UPLANT WAY | PHILADELPHIA | PA |
Owens Corning Fiberglas | Ephrata | PA |
Owens Corning Fiberglas Corp | Berwyn | PA |
Owens Corning Fiberglas Corp | Philadelphia | PA |
OWENS CORNING FIBERGLASS | BERWICK | PA |
OWENS CORNING FIBERGLASS | BERWYN | PA |
Owens Corning Fiberglass Corp. | Berwyn | PA |
OWENS ILLINOIS | CLAXTON | PA |
OWENS ILLINOIS | CLARION | PA |
OWENS ILLINOIS | BARDSTOWN | PA |
OWENS ILLINOIS GLASS COMPANY – GLASS CONTAINER DIVISION | CLARION | PA |
OWENS-CORNING FIBERGLAS | BERWYN | PA |
OWENS-CORNING FIBERGLAS | PHILADELPHIA | PA |
OWENS-CORNING FIBERGLAS CORP. | BERWYN | PA |
OWENS-CORNING FIBERGLAS CORP. | PHILADELPHIA | PA |
Owens-Illinois | Brookville | PA |
OWENS-ILLINOIS GLASS CO | PITTSTON | PA |
OXFORD CABINET CO | OXFORD | PA |
Oxychem | Berwyn | PA |
OXY-LOY | ALLENTOWN | PA |
OZENDA SMOKELESS COAL COMPANY | BOSWELL | PA |
P & L | MCKEES ROCKS | PA |
P & Le Railroad | Beaver Falls | PA |
P H GLADFELTER CO – SPRING GROVE | YORK | PA |
P H GLATFELTER COMPANY | SPRING GROVE | PA |
P P & L OFFICE BLDG | KINGSTON | PA |
P P G INDUSTRIES INC | SPRINGDALE | PA |
P P G INDUSTRIES INC | MEADVILLE | PA |
P&LE Railroad | McKees Rock | PA |
P. H. GLATFELTER CO – GLADFELTER BUILDING | SPRING GROVE | PA |
P. H. GLATFELTER COMPANY | SPRING GROVE | PA |
P. MCGRAW AND WOOL COMPANY | ALLEGHENY | PA |
P. MCGRAW WOOL COMPANY | PITTSBURGH | PA |
P.A. & S. SMALL | YORK | PA |
P.A. Power & Light – Sunbury Station | Sunbury | PA |
P.F. MAGIN AND COMPANY, JONES AND LAUGHLIN BUILDING | PITTSBURGH | PA |
P.H. BERMAN & SONS | PHILADELPHIA | PA |
P.H. GLATFELDER COMPANY | SPRING GROVE | PA |
P.H. Glatfelter | Spring Grove | PA |
P.J. RITTER COMPANY | PHILADELPHIA | PA |
P.O. #13014-S-601 FLOOR PLANT | LANCASTER | PA |
PA FORGE DIV OF CHERTRON CORP | PHILADELPHIA | PA |
PA MALL IRON CORP | LANCASTER | PA |
PABST BREWING COMPANY | FOGELSVILLE | PA |
PACIFIC RAILROAD WESTERN LINES | CONWAY | PA |
Packard Building – Office | Philadelphia | PA |
PACKER COLLIERY #4 | LOST CREEK | PA |
PACKER COLLIERY #5 | LOST CREEK | PA |
Pacor | Chester | PA |
Pacor Inc | Philadelphia | PA |
Page Steel & Wire Co. | Monessen | PA |
PAGE WOVEN WIRE FENCE COMPANY | MONESSEN | PA |
PAGE WOVEN WIRE FENCE COMPANY | MORESSEN | PA |
PALLADINON | POTTSTOWN | PA |
PALMERTON ELEMENTARY | PALMERTON | PA |
PALMERWELD FABRICATING COMPANY | AMBLER | PA |
Pangborn Corporation | Bethlehem | PA |
Pangborn Corporation | Homestead | PA |
PAOLI ELEMENTARY | PAOLI | PA |
PAPER MANUFACTURERS | PHILADELPHIA | PA |
PAPER MFG CO | PHILADELPHIA | PA |
Papercraft Plant | Pittsburgh | PA |
Parade Lumber Co | Erie | PA |
Paragon Packaging Prod Inc | Girard | PA |
PARISH DIV. DANA | READING | PA |
Parish Pressed Steel (Dana Corp.) | Reading | PA |
PARK AND TILFORD DISTILLERY COMPANY | BROWNSVILLE | PA |
Park City Mall | Lancaster | PA |
PARK CITY MALL – GIMBELS DEPARTMENT STORE | LANCASTER | PA |
PARK CITY SHOPPING CENTER | PARK CITY | PA |
PARK CITY SHOPPING CENTER | LANCASTER | PA |
PARK CITY SHOPS – ROUTET 30 BYPASS | LANCASTER | PA |
PARK CITY STORES | PARK CITY | PA |
PARK HOTEL | WILLIAMSPORT | PA |
PARK SHOPS | MANTUA | PA |
PARK STEEL COMPANY | PITTSBURGH | PA |
PARK STEEL WORKS | PITTSBURGH | PA |
PARK WORKS | PITTSBURGH | PA |
PARKERSBURG IRON AND STEEL COMPANY | PITTSBURGH | PA |
PARKESBURG IRON COMPANY | PARKESBURG | PA |
PARKVALE SAVINGS AND LOAN – FORBES AVENUE | OAKLAND | PA |
PARKVIEW COURT APARTMENTS | YEADON | PA |
PARKVIEW COURT APARTMENTS BUILDING B | YEADON | PA |
PARKVIEW COURT APARTMENTS BUILDING T | YEADON | PA |
PARKVIEW COURT APARTMENTS BUILDING Z 2 | YEADON | PA |
Parkway Apartment | Harrisburg | PA |
PARKWAY MANOR ELEM SCHOOL | LEHIGH COUNTY | PA |
Parsons Insulation | Wilkes Barre | PA |
PARVIEW COURT APARTMENTS | YEADON | PA |
PASCAGOULA STREET RAILWAY AND POWER COMPANY | SCRANTON | PA |
PASSAVANT HOSPITAL | PITTSBURGH | PA |
PATERSON PARCHMENT PAPER COMPANY | BRISTOL | PA |
PATERSON PARCHMENT PAPER COMPANY | EDGLEY | PA |
PAUL AND BEEKMAN CO | PHILADELPHIA | PA |
PAUL B. HENDEL & COMPANY | READING | PA |
PAUL BRONZE & BRASS CORP | EDDINGTON | PA |
Paul E. Stare Plumbing & Heating | Mechanicsburg | PA |
Paul Lumber And Supply Co | Pittsburgh | PA |
Paul W. Anderson | Stroudsburg | PA |
PAULSON ABBOT INC | CROYDON | PA |
PAWHATTAN COAL AND COKE COMPANY | SYKESVILLE | PA |
PAXTANG ELECTRIC COMPANY – POWER PLANT | HARRISBURG | PA |
PAXTON IRON AND STEEL COMPANY | HARRISBURG | PA |
PAXTRON FURNACES | HARRISBURG | PA |
PEABODY VERTICAL AIR HEATER | NEWELL | PA |
Peach Bottom III | Delta | PA |
PEACH BOTTOM NUCLEAR GENERATING STATION – UNIT 1 | DELTA | PA |
PEACH BOTTOM NUCLEAR GENERATING STATION – UNIT 2 | DELTA | PA |
PEACH BOTTOM NUCLEAR GENERATING STATION – UNIT 3 | DELTA | PA |
Peach Bottom Nuclear Plant | York County | PA |
Peachbottom Nuclear Plant – Unit 2 | Delta | PA |
Peachbottom Powerhouse | DELTA | PA |
Peachbottom Reactor II | Delta | PA |
PEARSON MFG CO INC | PITTSBURGH | PA |
Pebbco Industries | Lancaster | PA |
Peckerman Company | Philadelphia | PA |
PECO | Philadelphia | PA |
PECO – CROMBY POWER PLANT | PHOENIXVILLE | PA |
Peco Barbados Island Powerhouse | Norristown | PA |
PECO Croydon Powerhouse | Croydon | PA |
Peco Delaware Station Powerhouse | Philadelphia | PA |
Peco Eddystone Station Powerhouse | Eddystone | PA |
PECO Energy – West Conshohocken Gas Plant | WEST CONSHOHOKEN | PA |
PECO ENERGY COMPANY | PHILADELPHIA | PA |
PECO, Cromby Station | Phoenixville | PA |
PECO-Cromby Station | Norristown | PA |
Peco-Philadelphia Electric | Philadelphia | PA |
Pecora Inc. | Philadelphia | PA |
PEERLESS DYE CO | PHILADELPHIA | PA |
PEERLESS DYEING | PHILADELPHIA | PA |
PENCOYD IRON WORKS | PENCOYD | PA |
PENCOYD IRON WORKS | PHILADELPHIA | PA |
Penelec Power Plant | Shawville | PA |
Penhurst State Institute | Spring City | PA |
PENN ALUMINUM | ERIE | PA |
PENN ARGYL HIGH SCHOOL | PEN ARGYL | PA |
PENN BRADFORD COMPANY | PHILADELPHIA | PA |
Penn Center | Philadelphia | PA |
PENN CENTER TWO | PHILADELPHIA | PA |
PENN CENTRAL | ENOLA | PA |
PENN CENTRAL | ALTOONA | PA |
PENN CENTRAL | HOLIDAYSBURG | PA |
PENN CENTRAL | SOUTH ALTOONA | PA |
PENN CENTRAL LIGHT AND POWER COMPANY | SAXTON | PA |
PENN CENTRAL LIGHT AND POWER COMPANY | ALTOONA | PA |
PENN CENTRAL RAIL ROAD COMPANY | PHILADELPHIA | PA |
PENN CENTRAL RAILROAD CO | PHILADELPHIA | PA |
Penn Dairies | Lancaster | PA |
Penn Dairies | Pottsville | PA |
PENN DAIRIES, GREENFIELD RD. | LANCASTER | PA |
PENN DAIRIES, INCORPORATED | YORK | PA |
PENN DIXIE CEMENT COMPANY | NAZARETH | PA |
PENN DIXIE CEMENT CORP – PLANT NO 9 | WEST WINFIELD | PA |
PENN ELECTRIC | JOHNSTOWN | PA |
PENN ELECTRIC | WARREN | PA |
Penn Electric Co | Shawville | PA |
PENN FISHING | PHILADELPHIA | PA |
Penn Fruit Co. – Warehouse | Philadelphia | PA |
Penn Fruit Company | Philadelphia | PA |
PENN GAS COAL COMPANY – COAL PLANT | IRWIN | PA |
PENN HARDWARE COMPANY | READING | PA |
PENN HEAT AND POWER COMPANY | WILKENSBURG | PA |
PENN HEAT AND POWER COMPANY | WILKINSBURG | PA |
PENN HIGH SCHOOL | KINGSTON | PA |
Penn Jersey Boiler Company | Pennsauken | PA |
PENN JERSEY TRANSMISSION CORP. | BECHTELSVILLE | PA |
PENN JERSEY TRANSMISSION CORP. | BOYERTOWN | PA |
PENN JERSEY TRANSMISSION CORP. | GRANTVILLE | PA |
PENN JERSEY TRANSMISSION CORP. | LILLY | PA |
PENN JERSEY TRANSMISSION CORP. | PERULACK | PA |
PENN MALL IRON | LANDISVILLE | PA |
PENN MO FIRE BRICK CO | HARRISBURG | PA |
Penn Mo Firebrick Co | Harrisburg | PA |
PENN MO FIREBRICK CO | PITTSBURGH | PA |
Penn Optical | Reading | PA |
PENN POWER | NEW EAGLE | PA |
PENN POWER & LIGHT – MONTOUR STATION | WASHINGTONVILLE | PA |
PENN POWER COMPANY | NEW CASTLE | PA |
PENN POWER COMPANY | WEST PITTSBURGH | PA |
PENN PUBLIC SERVICE COMPANY | PHILIPSBURG | PA |
PENN PUBLIC SERVICE COMPANY | JOHNSTOWN | PA |
PENN PUBLIC SERVICE CORPORATION | JOHNSTOWN | PA |
PENN PUBLIC SERVICE CORPORATION | SEWARD | PA |
PENN RANGE COMPANY | PHILADELPHIA | PA |
PENN RILTON COMPANY | WEST ELIZABETH | PA |
PENN SHERATON HOTEL | PHILADELPHIA | PA |
PENN SHOVEL COMPANY | CORRY | PA |
PENN STATE EDUCATIONAL ASSOCIATION BUILDING | HARRISBURG | PA |
Penn State University | State College | PA |
Penn State University | University Park | PA |
PENN STEEL COMPANY | PHILADELPHIA | PA |
PENN STEEL COMPANY | STEELTON | PA |
PENN TECH | JOHNSONBURG | PA |
PENN TREATY AMERICAN CORPORATION | PHILADELPHIA | PA |
PENN TREATY OVERALL | PHILADELPHIA | PA |
PENN VENTILATOR CO | PHILADELPHIA | PA |
PENN VENTILATOR COMPANY | PHILADELPHIA | PA |
PENN-ALLEN CEMENT COMPANY | NEAR NAZARETH | PA |
PENN-ALLEN PORTLAND CEMENT COMPANY | BATH | PA |
PENN-ALLEN PORTLAND CEMENT COMPANY | ALLENTOWN | PA |
PENN-BRADFORD APPL. | PHILADELPHIA | PA |
Pennco Industries | Warren | PA |
PENN-DIXIE CEMENT COMPANY | WEST WINFIELD | PA |
PENNHURST ST SCHOOL | SPRING CITY | PA |
Penns Valley Insulation | Lester | PA |
Penns Valley Insulation Company | Lester | PA |
PENNSALT CHEMICAL CO – PENNSYLVANIA SALT MFG. CO. – WYNDMOOR | PHILADELPHIA | PA |
PENNSALT CHEMICAL CO – WYNDMOOR | PHILADELPHIA | PA |
PENNSALT CHEMICALS CORPORATION | KING OF PRUSSIA | PA |
PENNSBURY POTTERY CO | HARRISVILLE | PA |
PENNSBURY POTTERY CO | MORRISVILLE | PA |
PENNSYLAVANIA COAL COMPANY | PITTSTON | PA |
PENNSYLVANIA RAILROAD | READING | PA |
PENNSYLVANIA ACADEMY OF FINE ARTS – BROAD STREET | PHILADELPHIA | PA |
Pennsylvania Academy of the Fine Arts | Philadelphia | PA |
PENNSYLVANIA BOLT AND NUT COMPANY | LEBANON | PA |
PENNSYLVANIA BRAKE BEAM COMPANY | DANVILLE | PA |
PENNSYLVANIA CEMENT COMPANY | BATH | PA |
Pennsylvania Central Power & Transit | Williamsburg | PA |
PENNSYLVANIA CENTRAL RAILROAD, 30TH ST. STATION | PHILADELPHIA | PA |
PENNSYLVANIA CHOCOLATE COMPANY | PITTSBURGH | PA |
PENNSYLVANIA COAL AND COKE COMPANY | EHRENFELD | PA |
PENNSYLVANIA COAL COMPANY | AVOCA | PA |
PENNSYLVANIA COAL COMPANY | DUNAMERE | PA |
PENNSYLVANIA COAL COMPANY | DUNMON | PA |
PENNSYLVANIA COAL COMPANY | DUNNON | PA |
PENNSYLVANIA COAL COMPANY | MT. LOOKOUT | PA |
PENNSYLVANIA COAL COMPANY | SEBASTOPOL | PA |
PENNSYLVANIA COAL COMPANY | PITTSTON | PA |
PENNSYLVANIA COAL COMPANY | SCRANTON | PA |
PENNSYLVANIA COAL COMPANY | DUNMORE | PA |
PENNSYLVANIA COAL COMPANY | PLAINS JUNCTION | PA |
PENNSYLVANIA COAL COMPANY | WYOMING | PA |
PENNSYLVANIA COAL COMPANY OLD FORGE BREAKER | DUNMORE | PA |
PENNSYLVANIA COAL COMPANY, #8 WASHERY | PITTSTON | PA |
PENNSYLVANIA COAL COMPANY, EWEN BREAKER | PITTSTON | PA |
Pennsylvania Cola Co. | Dunmore | PA |
PENNSYLVANIA COMPANY | PITTSBURGH | PA |
PENNSYLVANIA COMPANY | CONWAY | PA |
PENNSYLVANIA COMPANY, LINES WEST OF PITTSBUGH | ALLEGHENY | PA |
Pennsylvania Edison Co | Williamsburg | PA |
PENNSYLVANIA ELECTRIC | SAXTON | PA |
PENNSYLVANIA ELECTRIC | NEW FLORENCE | PA |
Pennsylvania Electric – Keystone Generating Station | Plumcreek | PA |
Pennsylvania Electric Co | Erie | PA |
Pennsylvania Electric Co | Seward | PA |
Pennsylvania Electric Co Erie Plant | Erie | PA |
Pennsylvania Electric Co Steam Heat Dept Front St Station | Erie | PA |
PENNSYLVANIA ELECTRIC CO. | HOMER CITY | PA |
PENNSYLVANIA ELECTRIC CO. – CONEMAUGH | NEW FLORENCE | PA |
PENNSYLVANIA ELECTRIC CO. – FRONT ST. POWER STATION | ERIE | PA |
PENNSYLVANIA ELECTRIC CO. – FRONT STREET STATION | ERIE | PA |
PENNSYLVANIA ELECTRIC CO. – HOMER CITY GENERATING STATION | HOMER CITY | PA |
PENNSYLVANIA ELECTRIC CO. – SHAWVILLE GENERATING STATION | SHAWVILLE | PA |
PENNSYLVANIA ELECTRIC CO. – SHAWVILLE GENERATING STATION – UNIT 4 | SHAWVILLE | PA |
PENNSYLVANIA ELECTRIC CO. – SHAWVILLE GENERATING STATION – UNITS 3 & 4 | SHAWVILLE | PA |
Pennsylvania Electric Co.- Seward Generating Station | Seward | PA |
Pennsylvania Electric Company | Altoona | PA |
Pennsylvania Electric Company | Williamsburg | PA |
Pennsylvania Electric Company | Homer City | PA |
PENNSYLVANIA ELECTRIC COMPANY – CONEMAUGH GENERATING STATION | New Florence | PA |
Pennsylvania Electric Company – Conemaugh Generating Station – Unit 1 | New Florence | PA |
PENNSYLVANIA ELECTRIC COMPANY – CONEMAUGH GENERATING STATION – Unit 2 | New Florence | PA |
PENNSYLVANIA ELECTRIC COMPANY – CONEMAUGH GENERATING STATION – Units 1 & 2 | New Florence | PA |
Pennsylvania Electric Company – Conemaugh Station | New Florence | PA |
PENNSYLVANIA ELECTRIC COMPANY – FRONT ST STATION | ERIE | PA |
Pennsylvania Electric Company – Homer City Generating Station | HOMER CITY | PA |
Pennsylvania Electric Company – Keystone Generating Station | Shelocta | PA |
PENNSYLVANIA ELECTRIC COMPANY – SEWARD | SEWARD | PA |
PENNSYLVANIA ELECTRIC COMPANY – SEWARD GENERATING STATION | Seward | PA |
PENNSYLVANIA ELECTRIC COMPANY – SEWARD STATION – WESTMORELAND COUNTY | SEWARD | PA |
PENNSYLVANIA ELECTRIC COMPANY – SHAWVILLE PLANT | SHAWVILLE | PA |
PENNSYLVANIA ELECTRIC COMPANY – SHAWVILLE PLANT – UNIT 3 | SHAWVILLE | PA |
PENNSYLVANIA ELECTRIC COMPANY – SHAWVILLE PLANT – UNITS 3 AND 4 | SHAWVILLE | PA |
Pennsylvania Electric Company – Shawville Station | Shawville | PA |
PENNSYLVANIA ELECTRIC COMPANY – SHAWVILLE STATION – UNITS #3 & #4 | SHAWVILLE | PA |
Pennsylvania Fruit | Philadelphia | PA |
PENNSYLVANIA FURNACE COMPANY | SHERIDAN | PA |
Pennsylvania Gas Company | Erie | PA |
Pennsylvania Gas Company | Roystone | PA |
Pennsylvania Gas Company | Sheffield | PA |
PENNSYLVANIA GENERAL IMP. COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA GENERAL IMP. COMPANY | ROCKLEDGE | PA |
PENNSYLVANIA HARDWARE COMPANY | READING | PA |
PENNSYLVANIA HOSPITAL | PHILADELPHIA | PA |
PENNSYLVANIA INDUSTRIAL CHEMICAL CO – CHESTER PLANT | CHESTER | PA |
PENNSYLVANIA INDUSTRIAL CHEMICAL CO – CLAIRTON PLANT | CLAIRTON | PA |
PENNSYLVANIA INDUSTRIAL CHEMICAL CO – CLAIRTON PLANT STOREROOM | CLAIRTON | PA |
PENNSYLVANIA INDUSTRIAL CHEMICAL CO – GATE 1 | CHESTER | PA |
PENNSYLVANIA INDUSTRIAL CHEMICAL CO – JEFFERSON PLANT | WEST ELIZABETH | PA |
PENNSYLVANIA INSTITUTE FOR INSTRUCTION OF BLIND | OVERBROOK | PA |
PENNSYLVANIA INSTITUTE FOR THE INSTRUCTION OF THE BLIND | PHILADELPHIA | PA |
Pennsylvania Iron Co. | Lancaster | PA |
PENNSYLVANIA LEIGHTWEIGHT AGGREGATE | BANGOR | PA |
PENNSYLVANIA LIGHT AND POWER COMPANY | ALLEGHENY | PA |
PENNSYLVANIA LIGHT, HEAT AND POWER COMPANY | ALLEGHENY | PA |
PENNSYLVANIA LINES, WEST OF PITTSBURGH, ALLEGHENY SHOPS | ALLEGHENY | PA |
PENNSYLVANIA LUBRICATING COMPANY | PITTSBURGH | PA |
PENNSYLVANIA MALLEABLE COMPANY | PITTSBURGH | PA |
PENNSYLVANIA MALLEABLE COMPANY | MCKEES ROCKS | PA |
PENNSYLVANIA MANUFACTURING LIGHT AND POWER COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA MANUFACTURING, LIGHT AND POWER COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA MUTUAL BUILDING | PHILADELPHIA | PA |
PENNSYLVANIA MUTUAL INSURANCE COMPANY – 5TH & WALNUT STREETS | PHILADELPHIA | PA |
Pennsylvania Ordnance | Allenwood | PA |
Pennsylvania Ordnance Works (Susquehanna Ordnance Works) | Allentown | PA |
PENNSYLVANIA PERLITE CORPORATION – MANUFACTURING PLANT | BETHLEHEM | PA |
PENNSYLVANIA POWER | WEST PITTSBURGH | PA |
Pennsylvania Power & Light | Martins Creek | PA |
PENNSYLVANIA POWER & LIGHT | ALLENTOWN | PA |
PENNSYLVANIA POWER & LIGHT | BRUNNERS ISLAND | PA |
PENNSYLVANIA POWER & LIGHT | MANSFIELD | PA |
PENNSYLVANIA POWER & LIGHT | SUNBURY | PA |
PENNSYLVANIA POWER & LIGHT | SHAMOKIN DAM | PA |
PENNSYLVANIA POWER & LIGHT | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT – BRUNNER ISLAND PLANT | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT – BRUNNER ISLAND PLANT – UNIT #2 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT – BRUNNER ISLAND PLANT – UNIT #3 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT – HOLTWOOD STATION | HOLTWOOD | PA |
PENNSYLVANIA POWER & LIGHT – LANCASTER COUNTY | HOLTWOOD | PA |
PENNSYLVANIA POWER & LIGHT – MONTOUR POWER PLANT | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT – MONTOUR STATION | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT – MONTOUR STATION – UNIT #1 | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT – MONTOUR STATION – UNIT #2 | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT – SUNBURY | SHAMOKIN DAM | PA |
PENNSYLVANIA POWER & LIGHT – TURBINE | SHAMOKIN DAM | PA |
PENNSYLVANIA POWER & LIGHT CO | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER #1 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND STATION | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND STATION – UNIT 2 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND STATION UNIT NBR 3 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND STEAM ELEC STATION – UNIT NBR 2 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND STEAM STATION | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – BRUNNER ISLAND UNIT NBR 3 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – DRUNNER ISLAND STATION | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT CO – GENERATION STORES – ENGLESIDE SERVICE DEPOT | LANCASTER | PA |
PENNSYLVANIA POWER & LIGHT CO – MARTINS | MARTINS CREEK | PA |
PENNSYLVANIA POWER & LIGHT CO – MARTINS CREEK S E S | MARTINS CREEK | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR NO 1 POWER PLANT | STRAWBERRY RIDGE | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR NO 1 POWER PLANT | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR STEAM ELEC STATION UNIT 1 | STRAWBERRY RIDGE | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR STEAM ELEC STATION UNIT 2 | STRAWBERRY RIDGE | PA |
PENNSYLVANIA POWER & LIGHT CO – MONTOUR STEAM ELEC STATION UNIT 2 | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT CO – POWER PLANT STOREROOM | SHAMOKIN DAM | PA |
PENNSYLVANIA POWER & LIGHT CO – POWER PLANT STOREROOM | SNYDER CTY | PA |
PENNSYLVANIA POWER & LIGHT CO – R. H. WHETSTONE SUPT | PINE GROVE | PA |
PENNSYLVANIA POWER & LIGHT CO – SES STATION | MARTINS CREEK | PA |
PENNSYLVANIA POWER & LIGHT CO – SUBURBAN PLANT STOREROOM | SCRANTON | PA |
PENNSYLVANIA POWER & LIGHT CO – SUNBURY S E S | SHAMOKIN DAM | PA |
Pennsylvania Power & Light Co. | Sunbury | PA |
Pennsylvania Power & Light Co. | York Haven | PA |
PENNSYLVANIA POWER & LIGHT CO. – BRUNNER ISLAND STATION | YORK HAVEN | PA |
Pennsylvania Power & Light Co. – Cedar Steam Electric Station | Harrisburg | PA |
Pennsylvania Power & Light Co. (a/k/a Lehigh Valley P&L) – Hauto Steam Electric Station | Hauto | PA |
Pennsylvania Power & Light Co. (a/k/a Phoenix Utility) – Walnut Steam Heat Station | Harrisburg | PA |
Pennsylvania Power & Light Co.- Sunbury Steam Station | Shamokin Dam | PA |
Pennsylvania Power & Light Co., Unit #2 | Martins Creek | PA |
Pennsylvania Power & Light Co.? Martins Creek Power Plant | Martins Creek | PA |
Pennsylvania Power & Light Company | Pine Groove | PA |
Pennsylvania Power & Light Company | Shamokin Dam | PA |
PENNSYLVANIA POWER & LIGHT COMPANY | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT COMPANY | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT, BRUNNER ISLAND PLANT | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT, BRUNNER ISLAND PLANT, UNIT #2 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT, BRUNNER ISLAND PLANT, UNIT #3 | YORK HAVEN | PA |
PENNSYLVANIA POWER & LIGHT, HOLTWOOD STATION | HOLTWOOD | PA |
PENNSYLVANIA POWER & LIGHT, LANCASTER COUNTY | HOLTWOOD | PA |
PENNSYLVANIA POWER & LIGHT, MONTOUR STATION | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT, MONTOUR STATION, UNIT #1 | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT, MONTOUR STATION, UNIT #2 | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT, MONTOUR STEAM ELECTRIC STATION, UNIT # 1 EBASCO SERVICES, INC. AGENT | WASHINGTONVILLE | PA |
PENNSYLVANIA POWER & LIGHT, MONTOUR STEAM ELECTRIC STATION, UNIT # 2 EBASCO SERVICES, INC. AGENT | STRAWBERRY RIDGE | PA |
PENNSYLVANIA POWER & LIGHT, SUNBURY | SHAMOKIN DAM | PA |
PENNSYLVANIA POWER & LIGHT, TURBINE | HARRISBURG | PA |
PENNSYLVANIA POWER & LIGHT, TURBINE | PITTSBURGH | PA |
PENNSYLVANIA POWER & LIGHT, TURBINE | SHAMOKIN DAM | PA |
Pennsylvania Power and Light | Martin’s Creek | PA |
Pennsylvania Power and Light – Lower Mount Bethel Energy Plant | Lower Mount Bethel | PA |
Pennsylvania Power and Light – Unit No. 2 | Brunner Island | PA |
PENNSYLVANIA POWER AND LIGHT (PPL) – BRUNNER ISLAND STEAM ELECTRIC STATION | YORK COUNTY | PA |
PENNSYLVANIA POWER AND LIGHT (PPL) – MARTINS CREEK POWER PLANT | HARRISBURG | PA |
PENNSYLVANIA POWER AND LIGHT (PPL) BUILDING – NORTH 9TH STREET | ALLENTOWN | PA |
PENNSYLVANIA POWER AND LIGHT COMPANY | HAUTO | PA |
PENNSYLVANIA POWER AND LIGHT COMPANY | RIVER STATION | PA |
PENNSYLVANIA POWER AND LIGHT COMPANY | SCRANTON | PA |
Pennsylvania Power and Light Company – Hauto Steam Electric Station | HAUTO | PA |
PENNSYLVANIA POWER CO., CONSTRUCTION DEPT., FIELD OFFICE, BRUCE MANSFIELD PLANT, UNIT #3 | SHIPPINGPORT | PA |
PENNSYLVANIA POWER COMPANY | ELLWOOD CITY | PA |
PENNSYLVANIA POWER COMPANY | NEW CASTLE | PA |
PENNSYLVANIA POWER COMPANY – NEW CASTLE PLANT | NEW CASTLE | PA |
PENNSYLVANIA POWER COMPANY, NEW CASTLE PLANT | WEST PITTSBURGH | PA |
Pennsylvania Power- Shippingport Atomic Power Station | Shippingport | PA |
PENNSYLVANIA PULP AND PAPER COMPANY | LOCK HAVEN | PA |
PENNSYLVANIA RAIL ROAD SHOPS | WEST PHILADELPHIA | PA |
Pennsylvania Railroad | Balairsville | PA |
Pennsylvania Railroad | Pitcairn | PA |
Pennsylvania Railroad | Shire Oaks | PA |
PENNSYLVANIA RAILROAD | PAOLI | PA |
PENNSYLVANIA RAILROAD | MEDIA | PA |
PENNSYLVANIA RAILROAD | JUANITA | PA |
PENNSYLVANIA RAILROAD | ERIE | PA |
PENNSYLVANIA RAILROAD | CHESTER | PA |
PENNSYLVANIA RAILROAD | HOLIDAYSBURG | PA |
PENNSYLVANIA RAILROAD – BROAD STREET STATION | PHILADELPHIA | PA |
PENNSYLVANIA RAILROAD CO | PHILADELPHIA | PA |
PENNSYLVANIA RAILROAD CO | ALTOONA | PA |
PENNSYLVANIA RAILROAD CO – Steam Heating Plant, 30th & Race St. | WEST PHILADELPHIA | PA |
Pennsylvania Railroad Co. | Philadelphia | PA |
PENNSYLVANIA RAILROAD CO. – JUNIATA SHOP | ALTOONA | PA |
PENNSYLVANIA RAILROAD CO. – STATION 1560 – JUNIATA SHOP | ALTOONA | PA |
Pennsylvania Railroad Company | Altoona | PA |
Pennsylvania Railroad Company | East Altoona | PA |
Pennsylvania Railroad Company | Enola | PA |
Pennsylvania Railroad Company | Philadelphia | PA |
Pennsylvania Railroad Company | Pittsburgh | PA |
PENNSYLVANIA RAILROAD COMPANY | RENOVO | PA |
PENNSYLVANIA RAILROAD COMPANY | RONOVO | PA |
PENNSYLVANIA RAILROAD COMPANY | WEST PHILADELPHIA | PA |
PENNSYLVANIA RAILROAD COMPANY | ERIA | PA |
PENNSYLVANIA RAILROAD COMPANY | LAWRENCE JUNCTION | PA |
PENNSYLVANIA RAILROAD COMPANY | POTTSVILLE | PA |
PENNSYLVANIA RAILROAD COMPANY | READING | PA |
PENNSYLVANIA RAILROAD COMPANY | SOUTH ALTOONA | PA |
PENNSYLVANIA RAILROAD COMPANY | ST. ALTOONA | PA |
PENNSYLVANIA RAILROAD COMPANY | PITCAIRN | PA |
PENNSYLVANIA RAILROAD COMPANY 28TH ST. POWERHOUSE | PITTSBURGH | PA |
PENNSYLVANIA RAILROAD COMPANY, CAR SHOPS | ALTOONA | PA |
PENNSYLVANIA RAILROAD COMPANY, FOUNDRIES | ALTOONA | PA |
PENNSYLVANIA RAILROAD OFFICE | PHILADELPHIA | PA |
PENNSYLVANIA RAILROAD SAMUEL REA CAR REPAIR SHOP | HOLLIDAYSBURG | PA |
PENNSYLVANIA RAILROAD SHOPS | RENOVO | PA |
Pennsylvania Railroad Station | Pittsburgh | PA |
PENNSYLVANIA RAILROAD, BROAD ST. STATION, GERMANTOWN JUNCTION, WOODLAND AV. FREIGHT | PHILADELPHIA | PA |
Pennsylvania Railroad, Freight Station | Harrisburg | PA |
Pennsylvania Range Boiler | Philadelphia | PA |
PENNSYLVANIA REFINING COMPANY – BLDG 38-31 | KARNS CITY | PA |
PENNSYLVANIA REFINING COMPANY – KARNS CITY REFINERY | KARNS CITY | PA |
PENNSYLVANIA REFINING COMPANY – NEAR BUTLER, PA. | KARNS CITY | PA |
Pennsylvania Rubber Co. | Jeanette | PA |
PENNSYLVANIA RUBBER COMPANY | JEANNETTE | PA |
PENNSYLVANIA RUBBER COMPANY | ERIE | PA |
PENNSYLVANIA SALIGHT MANUFACTURING COMPANY | NATRONA | PA |
PENNSYLVANIA SALT MANUFACTURING COMPANY | NATRONA | PA |
PENNSYLVANIA SALT MFG. CO. | WYNDMOOR | PA |
Pennsylvania Smelting & Refining Co. | Philadelphia | PA |
PENNSYLVANIA STATE HOSPITAL FOR TUBERCULOSIS | HAMBURG | PA |
PENNSYLVANIA STATE HOSPITAL TUBERCULOSIS SANATORIUM #4 | PHILADELPHIA | PA |
PENNSYLVANIA STATE PARK – RACOON STATE PARK – DEPT OF PROPERTY & SUPPLY PROJECT | PITTSBURGH | PA |
PENNSYLVANIA STATE REFORM SCHOOL | MORGANZA | PA |
PENNSYLVANIA STATE TRAINING SCHOOL | MORGANZA | PA |
PENNSYLVANIA STATE UNIV. – 104 ENGINEERING D BLDG. | STATE COLLEGE | PA |
PENNSYLVANIA STATE UNIVERSITY – ENGINEERING RESEARCH DEPT. – 104 ENGINEERING D BLDG. – UNIVERSITY PARK, PENNSYLVANIA | STATE COLLEGE | PA |
Pennsylvania Steel | Chester | PA |
PENNSYLVANIA STEEL COMPANY | STEELTON | PA |
PENNSYLVANIA STEEL COMPANY | LEBANON | PA |
PENNSYLVANIA STEEL COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA STEEL COMPANY, COKE OVENS | STEELTON | PA |
PENNSYLVANIA STEEL COMPANY, LEBANON FURNACE | LEBANON | PA |
PENNSYLVANIA STEEL MILL | CHESTER | PA |
PENNSYLVANIA SUGAR | PHILADELPHIA | PA |
Pennsylvania Sugar Co | Philadelphia | PA |
PENNSYLVANIA SUGAR COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA SUGAR DIVISION, NATIONAL SUGAR REFINING COMPANY | PHILADELPHIA | PA |
PENNSYLVANIA TRAINING SCHOOL | MORGANZA | PA |
PENNSYLVANIA TUBE COMPANY | PITTSBURGH | PA |
PENNSYLVANIA TURNPIKE | HARRISBURG | PA |
Pennsylvania Utilities Co. | Easton | PA |
PENNSYLVANIA UTILITIES COMPANY – DOCK STREET PLANT | EASTON | PA |
PENNSYLVANIA WATER AND POWER COMPANY – HOLTWOOD HYDROELECTRIC POWER PLANT | HOLTWOOD | PA |
PENNSYLVANIA WATER COMPANY – FILTRATION PLANT | WILKINSBURG | PA |
PENNSYLVANIA WATER COMPANY – PUMPING STATION | WILDWOOD | PA |
PENNSYLVANIA WATER COMPANY – PUMPING STATION | NADINE | PA |
PENNSYLVANIA, COMMONWEALTH | SLIPPERY ROCK | PA |
Pennsylvannia Electric Company – Seward Station | Seward | PA |
PENNSYLVNIA COMPANY | PITTSBURGH | PA |
Penntech Papers Inc | Johnsonburg | PA |
PENNTECH PAPERS INC (a/k/a New York & Penn Co., Inc.) | JOHNSONBURG | PA |
Pennwalt Corp. | Philadelphia | PA |
PENNWEST FUELS | CLYMER | PA |
PENNZOIL | ROUSEVILLE | PA |
PENNZOIL CO – PLANT 1 | ROUSEVILLE | PA |
PENNZOIL CO – PLANT 2 | OIL CITY | PA |
PENNZOIL CO – PLANT NO. 2 | OIL CITY | PA |
Pennzoil Company | Rouserville | PA |
PENNZOIL COMPANY | PITTSBURGH | PA |
PENNZOIL COMPANY | OIL CITY | PA |
Pennzoil Refinery | Oil City | PA |
PENNZOIL REFINING CO. – PLANT NO. 1 | ROUSEVILLE | PA |
PENRECO/PENNSYLVANIA REFINING CO | KARNS CITY | PA |
PENSYLVANIA FORGE CORP | TACONY PHILADELPHIA | PA |
PENZOIL CO SOUTH PENN OI | OIL CITY | PA |
PENZOIL COMPANY, PLANT #4 | HOUSERVILLE | PA |
PENZOLL REFINERY | OIL CITY | PA |
People Natural Gas | White Valley | PA |
PEOPLE TRACTION COMPANY | PHILADELPHIA | PA |
PEOPLES BANK | WILKES BARRE | PA |
Peoples Bank Building | Pittsburgh | PA |
PEOPLES COAL COMPANY | OXFORD SWITCH | PA |
PEOPLES COAL COMPANY | SCRANTON | PA |
PEOPLES CONSOLIDATED SERVICE CORPORATION | EASTON | PA |
PEOPLES ELECTRIC LIGHT, HEAT AND POWER COMPANY – HEATING PLANT | GREENVILLE | PA |
PEOPLES ICE AND COLD STORAGE COMPANY | MCKEESPORT | PA |
PEOPLES ICE COLD STORAGE COMPANY | MCKEESPORT | PA |
PEOPLES ICE LIGHT AND STORAGE COMPANY | MCKEESPORT | PA |
PEOPLES INCANDESCENT LIGHT AND POWER COMPANY | MEADVILLE | PA |
PEOPLES LAND COMPANY | PITTSBURGH | PA |
PEOPLES LIGHT HEAT AND POWER COMPANY | MAHONEY CITY | PA |
PEOPLES NATURAL GAS – BRAVE STATION | BRAVE | PA |
PEOPLES NATURAL GAS CO. | TEANNETTE | PA |
PEOPLES NATURAL GAS COMPANY – OFFICE BUILDING | WILKINSBURG | PA |
PEOPLES POWER COMPANY | ELWOOD CITY | PA |
Peoples Savings & Trust Building | Pittsburgh | PA |
PEOPLES STREET RAILWAY COMPANY | ALDEN | PA |
PEOPLES STREET RAILWAY COMPANY | WANAMIE | PA |
PEOPLES STREET RAILWAY COMPANY | NANTICOKE | PA |
PEP BOYS | PHILADELPHIA | PA |
PEPPERIDGE FARMS | DOWNINGTON | PA |
PERKINS AND COMPANY, LIMITED | SHARPSVILLE | PA |
PERLSTEIN GLASS COMPANY – RICHMOND STREET | PHILADELPHIA | PA |
PERREX ALUMINUM | WELLSVILLE | PA |
PERRY IRON COMPANY | ERIE | PA |
PERRY LOWER TYRONE SCHOOL | FAYETTE COUNTY | PA |
PERRY SHIP BUILDERS COMPA | ERIE | PA |
Pes Valley Insulation Co | Lester | PA |
PETER F. LOFTUS | PITTSBURGH | PA |
PETERS AND COMPANY | MCKEESPORT | PA |
PETERS PACKING COMPANY | MCKEESPORT | PA |
PETERS PACKING COMPANY | KEESPORT | PA |
Petroleum Iron Works | Sharon | PA |
Petroleum Reclamation Company | Bradford | PA |
PETROWAX | EMLENTON | PA |
PETROWAX | FARMERS VALLEY | PA |
PFIZER INCORPORATED | EASTON | PA |
PGH Transformer | Canonsburg | PA |
PGW – TORRESDALE | PHILADELPHIA | PA |
PHIL ELLENA AND CHEW STS. | PHILADELPHIA | PA |
PHILADELPHIA AND BRISTOL WATER COMPANY – WATER FILTRATION PLANT | HOLMESBURG | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | POTTSVILLE | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | GOOD SPRING | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | LOCUST GAP | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | ST. NICHOLAS | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | MINERSVILLE | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | PHILADELPHIA | PA |
PHILADELPHIA AND READING COAL AND IRON COMPANY | MT. CARMEL | PA |
PHILADELPHIA AND READING RAILROAD COMPANY | PHILADELPHIA | PA |
PHILADELPHIA AND READING RAILROAD COMPANY | MAHANOY PLANE | PA |
PHILADELPHIA AND READING RAILROAD COMPANY | READING | PA |
PHILADELPHIA AND READING RAILWAY | PHILADELPHIA | PA |
PHILADELPHIA AND READING RAILWAY | READING | PA |
PHILADELPHIA AND READING RAILWAY COMPANY | FRACKVILLE | PA |
PHILADELPHIA AND READING SUBWAY | PHILADELPHIA | PA |
PHILADELPHIA AQUATIC CLUB | PHILADELPHIA | PA |
Philadelphia Asbestos & Cork | Philadelphia | PA |
Philadelphia Asbestos Co | Philadelphia | PA |
PHILADELPHIA ASBESTOS COR | PHILADELPHIA | PA |
Philadelphia Asbestos Corp. | Philadelphia | PA |
PHILADELPHIA BANK BUILDING | PHILADELPHIA | PA |
PHILADELPHIA BOARD OF EDUCATION | PHILADELPHIA | PA |
Philadelphia Brewing Co. | Philadelphia | PA |
PHILADELPHIA BURNER SERV | PHILADELPHIA | PA |
PHILADELPHIA CITY HALL ANNEX | PHILADELPHIA | PA |
Philadelphia Coke Co | Philadelphia | PA |
Philadelphia Coke Co. | Philadelphia | PA |
PHILADELPHIA COKE COMPANY | PHILADELPHIA | PA |
PHILADELPHIA COLLEGE OF A | PHILADELPHIA | PA |
PHILADELPHIA COLLEGE OF ARTS | PHILADELPHIA | PA |
PHILADELPHIA COMPANY | CANONSBURG | PA |
PHILADELPHIA COMPANY | PITTSBURGH | PA |
PHILADELPHIA COMPANY OF PITTSBURGH | PITTSBURGH | PA |
PHILADELPHIA CONVENTION HALL | PHILADELPHIA | PA |
PHILADELPHIA CONVENTION HALL (MUNICIPAL AUDITORIUM) | PHILADELPHIA | PA |
PHILADELPHIA COUNTY PRISON | HOLMESBURG | PA |
PHILADELPHIA COUNTY PRISON | PHILADELPHIA | PA |
PHILADELPHIA COUNTY PRISON | MOYAMENSING | PA |
PHILADELPHIA DRY YEAST | PHILADELPHIA | PA |
PHILADELPHIA DYE WORKS | PHILADELPHIA | PA |
Philadelphia Electric | Falls Twp | PA |
Philadelphia Electric | Phoenixville | PA |
Philadelphia Electric | Sanatoga | PA |
Philadelphia Electric | Philadelphia | PA |
Philadelphia Electric | Briston Twp | PA |
Philadelphia Electric | Pottstown | PA |
PHILADELPHIA ELECTRIC | CHESTER | PA |
Philadelphia Electric – Barbadoes Station | West Norriton | PA |
PHILADELPHIA ELECTRIC – BRUNNER ISLAND | YORK HAVEN | PA |
Philadelphia Electric – Cromby Station | E. Pikeland Township | PA |
Philadelphia Electric – Eddystone Station | Eddystone | PA |
PHILADELPHIA ELECTRIC – PEACHBOTTOM NUCLEAR | DELTA | PA |
Philadelphia Electric – Richmond Station | Philadelphia | PA |
PHILADELPHIA ELECTRIC – SCHUYLKILL GENERATING STATION | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC – SCHUYLKILL GENERATING STATION – STEAMLINE AND MANHOLE | PHILADELPHIA | PA |
Philadelphia Electric – Schuylkill Station | Philadelphia | PA |
Philadelphia Electric Co | Philadelphia | PA |
Philadelphia Electric Co | Chester | PA |
Philadelphia Electric Co 9th & Willow Streets | Philadelphia | PA |
Philadelphia Electric Co Cromby Station | Philadelphia | PA |
Philadelphia Electric Co Delaware Station | Philadelphia | PA |
Philadelphia Electric Co Eddystone 1 | Philadelphia | PA |
Philadelphia Electric Co. | Eddystone | PA |
Philadelphia Electric Co. | Conowingo | PA |
Philadelphia Electric Co. | Chester | PA |
PHILADELPHIA ELECTRIC CO. | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC CO. – EDDYSTONE GENERATING STATION | Crum Creek | PA |
PHILADELPHIA ELECTRIC CO. – EDISON HEATING PLANT – UNIT 3 | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC CO. – RICHMOND STATION | PHILADELPHIA | PA |
Philadelphia Electric Co.- Peach Bottom Power Station | Delta | PA |
Philadelphia Electric Co., Crombie Station | Phoenixville | PA |
Philadelphia Electric Co., Delaware Sta. | Philadelphia | PA |
Philadelphia Electric Company | Philadelphia | PA |
Philadelphia Electric Company | West Conshohocken | PA |
Philadelphia Electric Company | Peach Botom | PA |
Philadelphia Electric Company | Chester | PA |
Philadelphia Electric Company | Eddystone | PA |
Philadelphia Electric Company – Barbadoes Island Power Plant | Barbadoes Island | PA |
PHILADELPHIA ELECTRIC COMPANY – BARBADOS ISLAND | BARBADOS ISLAND | PA |
PHILADELPHIA ELECTRIC COMPANY – CHESTER STATION POWER PLANT | CHESTER | PA |
Philadelphia Electric Company – Cromby Generating Station | Phoenixville | PA |
PHILADELPHIA ELECTRIC COMPANY – CROMBY STATION | PHOENIXVILLE | PA |
Philadelphia Electric Company – Delaware Generating Station | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – DELAWARE STATION | PHILADELPHIA | PA |
Philadelphia Electric Company – Eddystone Generating Station | Eddystone | PA |
Philadelphia Electric Company – Eddystone Station | Eddystone | PA |
PHILADELPHIA ELECTRIC COMPANY – EDISON STEAM PLANT – 9TH & SANSOM | PHILADELPHIA | PA |
Philadelphia Electric Company – Limerick Generating Station | Pottstown | PA |
Philadelphia Electric Company – Peach Bottom Atomic Power Station | DELTA | PA |
Philadelphia Electric Company – Peach Bottom Atomic Power Station – Unit 2 | DELTA | PA |
Philadelphia Electric Company – Peach Bottom Atomic Power Station – Unit 3 | DELTA | PA |
Philadelphia Electric Company – PECO Building – 23RD & MARKET STREETS | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – POWER PLANT | CROMBY | PA |
PHILADELPHIA ELECTRIC COMPANY – RICHMOND FACILITY – FUEL OIL FACILITY | PHILADELPHIA | PA |
Philadelphia Electric Company – Richmond Generating Station | Philadelphia | PA |
PHILADELPHIA ELECTRIC COMPANY – RICHMOND STATION | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – RICHMOND STATION – CRUDE OIL FACILITY | PHILADELPHIA | PA |
Philadelphia Electric Company – Schuylkill Generating Station | Philadelphia | PA |
PHILADELPHIA ELECTRIC COMPANY – SCHUYLKILL STATION | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – SCHUYLKILL STATION – 28TH & CHRISTIAN | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – SOUTHWARK POWER PLANT | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – STATION C | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – STATION J | TACONY | PA |
PHILADELPHIA ELECTRIC COMPANY – TACONY POWER PLANT | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY – WEST CONSHOHOCKEN GAS PLANT | WEST CONSHOHOCKEN | PA |
Philadelphia Electric Company – Willow Street steam Plant | PHILADELPHIA | PA |
PHILADELPHIA ELECTRIC COMPANY BUILDING | PHILADELPHIA | PA |
Philadelphia Electric Company- Chester Generating Station | Chester | PA |
PHILADELPHIA ELECTRIC COR | PHILADELPHIA | PA |
Philadelphia Electric Plant Barbadoes Island | Philadelphia | PA |
Philadelphia Electric Richmond | Philadelphia | PA |
PHILADELPHIA ENGINEERING COMPANY | PHILADELPHIA | PA |
PHILADELPHIA EXPOSITION | PHILADELPHIA | PA |
Philadelphia Fire Department | Philadelphia | PA |
Philadelphia Forge | Philadelphia | PA |
Philadelphia Forge Co. | Philadelphia | PA |
PHILADELPHIA GAS WORKS | PHILADELPHIA | PA |
PHILADELPHIA GAS WORKS – 31ST & PASSYUNK AVENUE | PHILADELPHIA | PA |
Philadelphia Gas Works – Passyunk Ave Plant | PHILADELPHIA | PA |
Philadelphia Gas Works – Station A | Philadelphia | PA |
Philadelphia Gas Works – Station B | Philadelphia | PA |
Philadelphia Gas Works Station A & B | Philadelphia | PA |
PHILADELPHIA GEAR WORKS | KING OF PRUSSIA | PA |
Philadelphia General Hospital | Philadelphia | PA |
PHILADELPHIA GENERAL HOSPITAL – MEDICAL EXAMINERS LABORATORY | PHILADELPHIA | PA |
PHILADELPHIA GENERAL HOSPITAL – STUDENT NURSES DORMITORY | PHILADELPHIA | PA |
PHILADELPHIA GENERAL HOSPITAL, MEDICAL EXAMINERS LABORATORY | PHILADELPHIA | PA |
PHILADELPHIA GREYHOUND TERMINAL | PHILADELPHIA | PA |
PHILADELPHIA GROUP – ATLANTIC RESERVE FLEET NAVAL BASE | PHILADELPHIA | PA |
PHILADELPHIA HIGH SCHOOL FOR GIRLS – WEST OLNEY AVENUE | PHILADELPHIA | PA |
PHILADELPHIA HOME FOR INDIGENT & | PHILADELPHIA | PA |
PHILADELPHIA HOSPITAL | PHILADELPHIA | PA |
PHILADELPHIA HOSPITAL FOR THE INSANE | PHILADELPHIA | PA |
PHILADELPHIA HOSPITAL FOR THE INSANE, MALE DEPARTMENT | PHILADELPHIA | PA |
PHILADELPHIA HOUSING AUTH | PHILADELPHIA | PA |
PHILADELPHIA HOUSING AUTHORITY | PHILADELPHIA | PA |
PHILADELPHIA INCINERATOR | PHILADELPHIA | PA |
PHILADELPHIA INQUIRER | PHILADELPHIA | PA |
Philadelphia Inquirer Office Building | Philadelphia | PA |
Philadelphia Institute for Feeble Minded | Byberry | PA |
PHILADELPHIA INTERNATIONAL AIRPORT | PHILADELPHIA | PA |
Philadelphia Ironworks | Philadelphia | PA |
PHILADELPHIA MORTON AND SWARTHMORE STREET RAILWAY | FOLSOM STATION | PA |
PHILADELPHIA MUSEUM | PHILADELPHIA | PA |
Philadelphia National Bank | Philiadelphia | PA |
Philadelphia Naval Base | Philadelphia | PA |
Philadelphia Naval Shipyard | Philadelphia | PA |
PHILADELPHIA NAVAL SHIPYARD | USS LOS ANGELES | PA |
PHILADELPHIA NAVAL SHIPYARD | USS NEW JERSEY | PA |
PHILADELPHIA NAVAL SHIPYARD | USS VALLEY FORGE | PA |
PHILADELPHIA NAVAL SHIPYARD | USS WASHINGTON | PA |
PHILADELPHIA NAVAL SHIPYARD – BLDG 624 | PHILADELPHIA | PA |
PHILADELPHIA NAVAL SHIPYARD – BUILDING 624 | PHILADELPHIA | PA |
Philadelphia Navy Yard | Philadelphia | PA |
PHILADELPHIA NAVY YARD TRAINING SCHOOL | PHILADELPHIA | PA |
PHILADELPHIA PIPING & EQUIPMENT CO. – BLDG 64 – WING A EXT | BRISTOL | PA |
PHILADELPHIA PIPING & EQUIPMENT CO. – WRIGHTSTOWN ELEMENTARY SCHOOL – PENNS PARK | BUCKS COUNTY | PA |
PHILADELPHIA PROTECTORY FOR BOYS | PHOENIXVILLE | PA |
PHILADELPHIA PSYCHIATRIC HOSPITAL | PHILADELPHIA | PA |
PHILADELPHIA PUBLIC LIBRARY | PHILADELPHIA | PA |
PHILADELPHIA QUARTZ CO | PHILADELPHIA | PA |
PHILADELPHIA QUARTZ COMPANY | PHILADELPHIA | PA |
PHILADELPHIA QUARTZ COMPANY | CHESTER | PA |
PHILADELPHIA RAILROAD | READING | PA |
PHILADELPHIA READING COAL AND IRON COMPANY | MAHANOY PLANE | PA |
PHILADELPHIA READING CORPORATION | POTTSVILLE | PA |
Philadelphia Resin Company | Philadelphia | PA |
Philadelphia Roll & Machine | Philadelphia | PA |
PHILADELPHIA RUBBER WORKS COMPANY | OAKS | PA |
PHILADELPHIA RUST | PHILADELPHIA | PA |
PHILADELPHIA RUST PROOF C | PHILADELPHIA | PA |
PHILADELPHIA S&C 10 | BERWYN | PA |
PHILADELPHIA S&C 10 – CUSTOMER PICK UP | BERWYN | PA |
Philadelphia School District | Philadelphia | PA |
PHILADELPHIA SHIP MAINTEN | PHILADELPHIA | PA |
PHILADELPHIA SHIPYARD | PHILADELPHIA | PA |
PHILADELPHIA ST HOSPITAL | PHILADELPHIA | PA |
PHILADELPHIA SUBURBAN GAS AND ELECTRIC COMPANY – GAS PLANT | JENKINTOWN | PA |
PHILADELPHIA SUBURBAN GAS AND ELECTRIC COMPANY – POWER PLANT | WEST CHESTER | PA |
Philadelphia Suburban Water Co. | Janney | PA |
PHILADELPHIA SUBURBAN WATER COMPANY – WATER FILTRATION PLANT | CRUM CREEK | PA |
PHILADELPHIA TAPESTRY MILLS | PHILADELPHIA | PA |
PHILADELPHIA TRACTION COMPANY | PHILADELPHIA | PA |
PHILADELPHIA WOOL SCOURIN | PHILADELPHIA | PA |
PHILADELPHIA ZOO | PHILADELPHIA | PA |
Philadelphia Zoo – Rare Mammal House | Philadelphia | PA |
PHILADELPHIA, CITY OF | PHILADELPHIA | PA |
PHILADELPHIADELPHIA AND READING COAL AND IRON COMPANY | POTTSVILLE | PA |
PHILADELPHIADELPHIA AND READING COAL AND IRON COMPANY | SCHUYKILL HAVEN | PA |
Philco | Blue Bell | PA |
PHILIP CAREY MANUFACTURING COMPANY | PLYMOUTH MEETING | PA |
PHILIP CAREY MANUFACTURING PLANT | PLYMOUTH MEETING | PA |
PHILIPSBURG STATE HOSPITAL – REHABILITATION ANNEX | PHILIPSBURG | PA |
PHILLIP CAREY | PLYMOUTH | PA |
PHILLIP CAREY MANUFACTURING COMPANY | PHILADELPHIA | PA |
Phillips Generating Station | South Heights | PA |
Phillips Petroleum Co | Hanover | PA |
PHILLIPS POWER STATION | SOUTH HEIGHTS | PA |
PHILMOND ASSOCIATION AND WEST AV INVS | HUNTINGDON VALLEY | PA |
PHOENIX CEMENT COMPANY | NAZARETH | PA |
PHOENIX GLASS | MONACA | PA |
PHOENIX GLASS COMPANY | MONACA | PA |
PHOENIX GLASS COMPANY | PITTSBURGH | PA |
PHOENIX IRON AND STEEL COMPANY | CHESTER | PA |
PHOENIX IRON AND STEEL COMPANY | HARRISBURG | PA |
PHOENIX IRON AND STEEL COMPANY, BLAST FURNACE DIVISION | CHESTER | PA |
PHOENIX IRON COMPANY | PHOENIXVILLE | PA |
PHOENIX STEEL | PHOENIXVILLE | PA |
Phoenix Steel Corp | Phoenixville | PA |
PHOENIX STEEL CORPORATION | PHOENIXVILLE, CHESTER COUNTY | PA |
Phoenix Utility Company | Williamsport | PA |
PHOENIX UTILITY COMPANY – STEAM HEAT PLANT | PINE GROVE | PA |
PHOENIX UTILITY COMPANY – STEAM-OPERATED GENERATING PLANT | HAUTO | PA |
PHOENIXVILLE HOSPITAL | PHOENIXVILLE | PA |
PHOENIXVILLE INCINERATOR | PHOENIXVILLE | PA |
Phoenixville Steel | Phoenixville | PA |
PHYSICAL TEST LABS. | COATESVILLE | PA |
PHYSICIANS AND DENTIST BUILDING | PHILADELPHIA | PA |
PICKARD JOSEPH SONS CO | PHILADELPHIA | PA |
PICKETT MIDDLE SCHOOL – WAYNE & CHELTEN | PHILADELPHIA | PA |
PICKLES STEAK HOUSE | HORSHAM | PA |
PICO Chemical | Clairton | PA |
PICO Chemical | Chester | PA |
PIERCE GLASS CO., THE | PORT ALLEGANY | PA |
Pillsbury Plant | East Greenville | PA |
PINE GROVE | PINE GROVE | PENNSYLVANIA |
PINE KNOT COLLIERY | MINERSVILLE | PA |
PINE RIDGE STIRLING BOILER HOUSE | HUDSON | PA |
PINE TOWNSHIP COAL COMPANY | HEILWOOD | PA |
Pipeline Service Co | Glenwillard | PA |
PITT COM HEAT TREAT | PITTSBURGH | PA |
PITT COMM HEAT TREATING | PITTSBURGH | PA |
PITT STEEL FNDRY & MACHINE CO | MOKEESPORT | PA |
PITT-FAB | PITTSBURGH | PA |
Pittron | McKeesport | PA |
PITTRON | GLASSPORT | PA |
PITTRON A TEXTRON CO & MA | PITTSBURGH | PA |
PITTRON A TEXTRON CO AND MA | GLASSPORT | PA |
PITTS. COMM. HEATING | PITTSBURGH | PA |
PITTSBUGH THERMAL LIMITED PARTNERSHIP | PITTSBURGH | PA |
PITTSBURG COAL COMPANY | PITTSBURGH | PA |
PITTSBURG COAL COMPANY | SCOTT HAVEN | PA |
PITTSBURG COKE & CHEMICAL CO. | NEVILLE ISLAND | PA |
PITTSBURG MCKEESPORT AND CONNELLSVILLE RAILROAD | PITTSBURGH | PA |
PITTSBURG METAL PROCESS | SHARPSBURG | PA |
PITTSBURG METALS PURIFYING PLANT – SAXONBURGH ROAD | SAXONBURG | PA |
PITTSBURG PLATE GLASS COMPANY | PHILADELPHIA | PA |
PITTSBURG PLATE GLASS COMPANY | PITTSBURGH | PA |
PITTSBURG SHEAR KNIFE AND MACHINE COMPANY | PITTSBURGH | PA |
Pittsburgh & Lake Erie Railroad | Beaver Falls | PA |
PITTSBURGH & LAKE ERIE RAILROAD | MCKEES ROCK | PA |
PITTSBURGH ACTIVATED CARBON CO – DEPT 144 – NEVILLE ISLAND | PITTSBURGH | PA |
PITTSBURGH ACTIVATED CARBON CO – DEPT 3528 – NEVILLE ISLAND | PITTSBURGH | PA |
PITTSBURGH ACTIVATED CARBON CO – DEPT 714 | NEVILLE ISLAND | PA |
PITTSBURGH ACTIVATED CARBON CO – DEPT 848 – NEVILLE ISLAND | PITTSBURGH | PA |
Pittsburgh Airport | Pittsburgh | PA |
PITTSBURGH AND BIRMINGHAM TRACTION COMPANY | PITTSBURGH | PA |
PITTSBURGH AND BIRMUNGHAM TRACTION COMPANY | PITTSBURGH | PA |
PITTSBURGH AND BUTLER STREET RAILWAY COMPANY | RENFREW, BUTLER COUNTY | PA |
PITTSBURGH AND BUTLER STREET RAILWAY COMPANY | RENFREW | PA |
PITTSBURGH AND CONNEAUT DOCK COMPANY | PITTSBURGH | PA |
PITTSBURGH AND LAKE ERIE RAILROAD | GLASSPORT | PA |
PITTSBURGH AND LAKE ERIE RAILROAD COMPANY | PITTSBURGH | PA |
PITTSBURGH AND WEST END PASSENGER RAILWAY COMPANY | PITTSBURGH | PA |
PITTSBURGH AND WEST VIRGINIA RAILWAY COMPANY | ROOK | PA |
PITTSBURGH ATHLETIC ASSOCIATION | PITTSBURGH | PA |
PITTSBURGH ATHLETIC ASSOCIATION LAND COMPANY | PITTSBURGH | PA |
PITTSBURGH BREWING CO | PITTSBURGH | PA |
PITTSBURGH BREWING COMPANY | PITTSBURGH | PA |
PITTSBURGH BUFFALO COMPANY | PITTSBURGH | PA |
PITTSBURGH BUFFALO COMPANY | ELLSWORTH | PA |
PITTSBURGH BUFFALO COMPANY | BURGETTSTOWN | PA |
PITTSBURGH BUFFALO COMPANY | MARIANNA | PA |
PITTSBURGH CITY FLOWER CO | GIBSONIA | PA |
PITTSBURGH CITY HOME AND HOSPITAL AT MAYVIEW – POWER PLANT | PITTSBURGH | PA |
PITTSBURGH COAL | PITTSBURGH | PA |
PITTSBURGH COAL CO | ALLEGHENY | PA |
PITTSBURGH COAL CO. SHOPS | LIBRARY | PA |
PITTSBURGH COAL COMPANY | IMPERIAL | PA |
PITTSBURGH COAL COMPANY | PITTSBURGH | PA |
PITTSBURGH COAL COMPANY | GRINDSTONE | PA |
Pittsburgh Coal Corporation | Imperial | PA |
Pittsburgh Coal Corporation | Allegheny County | PA |
Pittsburgh Coke & Chemical | Neville Island | PA |
PITTSBURGH COKE & CHEMICAL CO. | NEVILLE ISLAND | PA |
PITTSBURGH COKE & CHEMICAL CO. | MCKEES ROCKS | PA |
PITTSBURGH COKE & CHEMICAL CO. – NEVILLE ISLAND | PITTSBURGH | PA |
Pittsburgh Coke & Iron Company | Pittsburgh | PA |
PITTSBURGH COMMERCIAL | PITTSBURGH | PA |
PITTSBURGH CONSOLIDATION COAL CO. – R & D DIVISION | LIBRARY | PA |
PITTSBURGH CONSOLIDATION COAL CO. – RESEARCH & DEVELOPMENT DIVISION | LIBRARY | PA |
Pittsburgh Consolidation Coal Company – Montour 10 Mine – Pilot Plant Storeroom | Library | PA |
Pittsburgh Consolidation Coal Company – Montour 10 Mine – RESEARCH & DEVELOPMENT DIVISION – PILOT PLANT STOREROOM | Library | PA |
Pittsburgh Consolidation Coal Company – Montour 10 Mine – RESEARCH & DEVELOPMENT DIVISION – PILOT PLANT STOREROOM – LAB DIVISION | Library | PA |
Pittsburgh Corning Corporation | Pittsburgh | PA |
PITTSBURGH CORNING CORPORATION | PORT ALLEGANY | PA |
Pittsburgh Corning Plant | Port Allegany | PA |
PITTSBURGH COT FLOWER CO | GIDSONI | PA |
PITTSBURGH CRANKSHAFT SERVICE | PITTSBUTGH | PA |
Pittsburgh Crucible Steel | Midland | PA |
PITTSBURGH CRUCIBLE STEEL COMPANY | MIDLAND | PA |
PITTSBURGH CRUCIBLE STEL COMPANY | MIDLAND | PA |
PITTSBURGH CUT FLOWER CO | GIBSONIA | PA |
PITTSBURGH DES MOINES STEEL | PITTSBURGH | PA |
PITTSBURGH DIE & CASTING CO | PITTSBURGH | PA |
PITTSBURGH DIE & CASTING CO | SWISSVALE | PA |
PITTSBURGH FERROMANGANESE COMPANY | CHESTER | PA |
PITTSBURGH FLEXICORE CO I | MONONGAHELA | PA |
PITTSBURGH FORGE AND IRON COMPANY | PITTSBURGH | PA |
PITTSBURGH FORGE AND IRON COMPANY | ALLEGHENY | PA |
PITTSBURGH FORGE AND IRON COMPANY | WOODS RUN | PA |
PITTSBURGH FORGING | CORAOPOLIS | PA |
PITTSBURGH FORGINGS CO | CORAPOLIS | PA |
PITTSBURGH FORGINGS COMPANY | CORAOPOLIS | PA |
PITTSBURGH GAGE & SUPPLY COMPANY | PITTSBURGH | PA |
PITTSBURGH GAS AND COKE COMPANY – BY-PRODUCT WORKS | GLASSPORT | PA |
PITTSBURGH GEAR CO | PITTSBURGH | PA |
PITTSBURGH HARMONY BUTLER AND NEW CASTLE RAILWAY COMPANY | EVANS CITY | PA |
PITTSBURGH HEAT | PITTSBURGH | PA |
PITTSBURGH HOUSING AUTHORITY, TERRACE VILLAGE | PITTSBURGH | PA |
PITTSBURGH INDUSTRIAL ENGR. CO. | PITTSBURGH | PA |
PITTSBURGH IRON AND STEEL ENGINEERING COMPANY | PITTSBURGH | PA |
PITTSBURGH KNIFE AND FORGE COMPANY | CORAOPOLIS | PA |
PITTSBURGH LAKE ERIE RAILROAD COMPANY | MCKEES ROCKS | PA |
PITTSBURGH LAKE ERIE RAILROAD DEPOT | PITTSBURGH | PA |
PITTSBURGH MCKEESPORT AND WESTMORELAND RAILWAY COMPANY | MCKEESPORT | PA |
PITTSBURGH MECHANICAL SYSTEMS INCORPORATED | PITTSBURGH | PA |
PITTSBURGH METAL FABRICATING | PITTSBURGH | PA |
PITTSBURGH METAL PROC. | PITTSBURGH | PA |
PITTSBURGH METAL PROCESS | PITTSBURGH | PA |
PITTSBURGH MILLING COMPANY | ALLEGHENY | PA |
PITTSBURGH MILLING COMPANY | PITTSBURGH | PA |
PITTSBURGH NATIONAL BANK – WOOD STREET | PITTSBURGH | PA |
PITTSBURGH NIPPLE WORKS I | PITTSBURGH | PA |
PITTSBURGH PLATE GLASS | TIPTON | PA |
PITTSBURGH PLATE GLASS | SPRINGDALE | PA |
PITTSBURGH PLATE GLASS | CREIGHTON | PA |
PITTSBURGH PLATE GLASS | HARMARVILLE | PA |
PITTSBURGH PLATE GLASS CO | PORT KENNEDY | PA |
PITTSBURGH PLATE GLASS CO | FORD CITY | PA |
PITTSBURGH PLATE GLASS CO – GLASS DIVISION – WORK NO 6 | FORD CITY | PA |
PITTSBURGH PLATE GLASS CO – GLASS RESEARCH CENTER | HARMARVILLE | PA |
PITTSBURGH PLATE GLASS CO – PAINT & BRUSH DIVISION | SPRINGDALE | PA |
PITTSBURGH PLATE GLASS CO – WORKS 6 | FORD CITY | PA |
Pittsburgh Plate Glass Company | Creighton | PA |
Pittsburgh Plate Glass Company | Ford City | PA |
PITTSBURGH PLATE GLASS COMPANY | ALLEGHENY | PA |
PITTSBURGH PLATE GLASS COMPANY | NATRIUM | PA |
PITTSBURGH PLATE GLASS COMPANY | TARENTUM | PA |
PITTSBURGH PLATE GLASS COMPANY | CHARLEROI | PA |
PITTSBURGH PLATE GLASS COMPANY | KENNERDELL | PA |
PITTSBURGH PLATE GLASS COMPANY | PITTSBURGH | PA |
PITTSBURGH PLATE GLASS COMPANY (PPG Industries) | Creighton | PA |
Pittsburgh Plate Glass Industries | Harmarville | PA |
PITTSBURGH POWERHOUSE | PITTSBURGH | PA |
Pittsburgh Press | Pittsburgh | PA |
PITTSBURGH PROVISION AND PACKING COMPANY | PITTSBURGH | PA |
PITTSBURGH RAILWAYS | PITTSBURGH | PA |
PITTSBURGH RAILWAYS COMPANY | BEAVER FALLS | PA |
PITTSBURGH RAILWAYS COMPANY | PITTSBURGH | PA |
PITTSBURGH RAILWAYS COMPANY, BRUNOTS’ ISLAND | PITTSBURGH | PA |
PITTSBURGH REDUCTION COMPANY | NEW KENSINGTON | PA |
PITTSBURGH REDUCTION COMPANY | PITTSBURGH | PA |
Pittsburgh Rochester Coal | Indiana | PA |
Pittsburgh Screw & Bolt Company | Pittsburgh | PA |
PITTSBURGH SCREW AND BOLT COMPANY | MONACA | PA |
PITTSBURGH SEAMLESS TUBE COMPANY | BEAVER FALLS | PA |
PITTSBURGH STANDARD CONDUIT CO. | ETNA | PA |
Pittsburgh Steamship Company | Pittsburgh | PA |
Pittsburgh Steel | Midland | PA |
Pittsburgh Steel | Allenport | PA |
PITTSBURGH STEEL CASTING COMPANY | PITTSBURGH | PA |
Pittsburgh Steel Co | Monesson | PA |
PITTSBURGH STEEL CO | MONESSEN | PA |
PITTSBURGH STEEL CO. | ALLENPORT | PA |
PITTSBURGH STEEL CO. | MCKEES ROCKS | PA |
Pittsburgh Steel Company | Allenport | PA |
PITTSBURGH STEEL COMPANY | MONESSEN | PA |
PITTSBURGH STEEL COMPANY | PITTSBURGH | PA |
PITTSBURGH STEEL COMPANY | ALICIA | PA |
Pittsburgh Steel Company – Allenport Plant | Allenport | PA |
Pittsburgh Steel Company – Coke Plant | Monessen | PA |
PITTSBURGH STEEL CORP | PITTSBURGH | PA |
PITTSBURGH STEEL CORP (a/k/a Wheeling Pittsburgh Steel Co) | MONESSEN | PA |
PITTSBURGH STEEL FOUNDRY | PITTSBURGH | PA |
PITTSBURGH STEEL FOUNDRY | GLASSPORT | PA |
PITTSBURGH STEEL FOUNDRY COMPANY | PITTSBURGH | PA |
PITTSBURGH STEEL PRODUCTS COMPANY | ALLENPORT | PA |
PITTSBURGH TERMINAL RAILROAD AND COAL COMPANY | HORNING | PA |
PITTSBURGH TERMINAL WAREHOUSE AND TRANSFER COMPANY | PITTSBURGH | PA |
Pittsburgh Theological Seminary | Pittsburgh | PA |
PITTSBURGH THERMAL | PITTSBURGH | PA |
PITTSBURGH TOOL STEEL WIRE | MONACA | PA |
Pittsburgh Tube | Monaca | PA |
PITTSBURGH VALVE AND FITTING COMPANY | PITTSBURGH | PA |
PITTSBURGH WIRE COMPANY | PITTSBURGH | PA |
PITTSBURGH WIRE COMPANY | BRADDOCK | PA |
PITTSBURGH, CINCINNATI, CHICAGO AND ST. LOUIS RAILROAD | PITTSBURGH | PA |
PITTSBURGH, CINCINNATI, CHICAGO AND ST. LOUIS RAILROAD | SCULLY | PA |
PITTSBURGH, HARMONY, BUTLER AND NEW CASTLE RAILWAY COMPANY | HARMONY | PA |
PITTSBURGH, MCKEESPORT AND CONNELLSVILLE RAILROAD | FARR STA. | PA |
PITTSTON COAL MINING COMPANY | SUGAR NOTCH | PA |
Plant Asbestos Company | Pittsburgh | PA |
Plaza Apartments | Philadelphia | PA |
PLUMB FAYETTE H INC | PHILADELPHIA | PA |
PLUMB FAYETTE R INC | PHILADELPHIA | PA |
PLUMB INC FAYETTE R | PHILADELPHIA | PA |
PLYMOUTH COAL COMPANY | WILKES BARRE | PA |
PLYMOUTH NUMBER 5 WASHERY | PLYMOUTH JUNCTION | PA |
POCONA CREEK APARTMENTS | STROUDSBURG | PA |
POINT BREEZE | PHILADELPHIA | PA |
POINT BREEZE GAS WORKS | PHILADELPHIA | PA |
POINT BREEZE REFINERY | PHILADELPHIA | PA |
POINT MARION POWERHOUSE | POINT MARION | PA |
POLLOCK SCHOOL – WELSH ROAD | PHILADELPHIA | PA |
Polymer Corporation | Reading | PA |
PONCE DE LEON | CHESTER | PA |
POPE TIN PLATE COMPANY | PITTSBURGH | PA |
Porcelain Products | Parkersburg | PA |
PORTAGE COAL MINING COMPANY | PORTAGE | PA |
Porter Building | Pittsburgh | PA |
PORTER CO A K | PHILADELPHIA | PA |
PORTER CO H K | PHILADELPHIA | PA |
PORTER H K | PHILADELPHIA | PA |
Portland Cement Co. | Allentown | PA |
POST OFFICE – 30TH STREET | PHILADELPHIA | PA |
Post Office 30th Street Station | Philadelphia | PA |
POTERO JOHN V | PHILADELPHIA | PA |
POTLACH PAPER MILL | LOCK HAVEN | PA |
POTOMAC (USS) | CHESTER | PA |
POTTER SONS AND COMPANY | PHILADELPHIA | PA |
POTTSGROVE SCHOOL | POTTSTOWN | PA |
Pottstown Hospital | Pottstown | PA |
POTTSTOWN IRON COMPANY | POTTSTOWN | PA |
POTTSVILLE AREA MIDDLE SCHOOL | POTTSVILLE | PA |
Pottsville Hospital | Pottsville | PA |
POTTSVILLE IRON AND STEEL COMPANY | POTTSVILLE | PA |
POTTSVILLE WATER COMPANY – PUMPING STATION | POTTSVILLE | PA |
POWELTON ELECTRIC COMPANY – LIGHT PLANT | PHILADELPHIA | PA |
POWELTON GARDENS | PHILADELPHIA | PA |
POWER ATOMIC POWER STATION | SHIPPINGPORT | PA |
Power House | Butler | PA |
POWER PIPING | DONORA | PA |
POWER PIPING | PITTSBURGH | PA |
Power Piping Company | Clairton | PA |
POWER SYSTEMS OPERATIONS | EBENSBURG | PA |
POWERHOUSE – SHIPPINGPORT | SHIPPINGPORT | PA |
POWERS WEIGHTMAN ROSENGARTEN COMPANY | PHILADELPHIA | PA |
Ppg | Ford City | PA |
PPG | HARMARVILLE | PA |
PPG | MEADVILLE | PA |