• [+] Defunct companies based in Pennsylvania (78 P)

• [+] Banks based in Pennsylvania (19 P)
• [+] Beer brewing companies based in Pennsylvania (1 C, 17 P)

cont.

• [+] Law firms based in Pennsylvania (2 C)
• [+] Restaurants in Pennsylvania (2 C, 19 P)

E

• [+] Companies based in Erie, Pennsylvania (8 P)

H

• [+] Companies based in Harrisburg, Pennsylvania (15 P)

L

• [+] Companies based in Lancaster, Pennsylvania (1 C, 11 P)

A

• A-Treat Bottling Company
• AAMCO Transmissions
• AMETEK
• ANSYS, Inc.
• Abraxis
• Acme Markets
• Adams Cable
• Adelphia Communications Corporation
• Adolor Corporation
• Advanced Telecom Services
• Aero Composite Technologies
• Agere Systems
• AgileCat
• Air East
• Air Products & Chemicals
• AirClic
• Airgas
• AlliedBarton
• Alpha Video
• Altec Lansing
• Ambi Budd
• Amekor
• American Bridge Company
• American Male
• AmerisourceBergen
• Analytical Graphics
• Aqua America
• Armstrong Group of Companies
• Armstrong Telephone Company
• Associated Wholesalers
• Astrobotic Technology

B

• Bayer USA
• Beard Miller Company
• Bell Motor Car Company
• Benco Dental
• Benshaw
• Bentley Systems
• Bethlehem Steel
• Big Ideas Learning
• Big-Bang Cannon
• Birmingham Coal Company
• Black Box Corporation
• Blackstone Career Institute
• Blinding Edge Pictures
• Blue Ridge Communications
• The Bon-Ton
• Boscov's
• Boyer Brothers
• Brooks Instrument
• Brown Instrument Company
• Buckeye Partners
• Burpee Seeds

C

• C. F. Martin & Company
• CETRA Language Solutions
• CSL Behring
• Calgon Carbon
• Capital Airlines
• Carnegie Steel Company
• Carolina Shoe
• Carson Helicopters
• CDNOW
• Cellomics
• Centraview
• CertainTeed

C cont.

• User:Fluke311
• Charming Shoppes
• Chef Boyardee
• Chester Pipe and Tube Company
• Chester Rolling Mill
• Clemens Markets
• CoActiv Capital Partners
• Collectables Records
• College Prowler
• Combination Steel and Iron Company
• ComcastTIX
• Commodore International
• Community Supermarkets
• Cottman Transmission
• Country Junction
• Crawford Broadcasting
• Crayola
• Crimson Records
• Crown American

D

• David Cutler Group
• David's Bridal
• Day-Timer
• Delmarva Broadcasting Company
• Dick's Sporting Goods
• Double-H Boots
• Duquesne Brewing Company
• DVDEmpire.com
• DynaVox

E

• EB Games
• EGames
• Eastwood Company
• Eichleay Engineers
• Elliott Company
• Empire Beauty Schools
• Endo Pharmaceuticals
• Entercom Communications
• EPAM Systems
• ERACENT
• Erie Brewing Company
• Erie Shipbuilding LLC
• Excel Homes
• Extrude Hone Corporation

F

• Follett Ice
• Food Service Solutions
• FoodLand
• Fox's Pizza Den
• Funtastic

G

• G-Log
• GE Betz
• GUARD Insurance Group
• Gannett Fleming Inc.
• Genesis HealthCare
• Genuardi's
• GeoDecisions
• Gertrude Hawk Chocolates
• GetGo
• Giant Eagle
• Giant-Carlisle
• Gino's Hamburgers
• Globe Department Store
• Gotham Distributing Corporation
• Graham Company
• GSI Commerce

H

• H.B. Hays and Brothers Coal Railroad

H cont.

• HRB Systems
• Hale Products Incorporated
• Harmony Channel
• Harriet Carter
• Harsco Corporation
• Hatfield Quality Meats
• Hendrick Manufacturing Company
• Hepburnia Coal Company
• Herley Industries
• Herr's Snacks
• The Hershey Company
• Hess's
• Holley Performance Products
• Homestead Steel Works
• Hoss's Steak and Sea House

I

• IKON Office Solutions
• Immix
• Innovative Solutions and Support
• Intelliquip
• Isaac's Restaurant & Deli

J

• Jersey Shore Steel
• Jones and Laughlin Steel Company
• Journal Register Company
• Just Born

K

• Kappa Publishing Group
• Keeling Coal Company
• Kennywood Entertainment Company
• Keystone Aircraft
• Kings Family Restaurants
• Knoll (company)
• Knox Glass Bottle Company
• Kuhn's Quality Foods
• Kunzler & Company, Inc.

L

• Lackawanna Steel Company
• Lancaster Laboratories
• Latrobe Brewing Company
• Laurel Networks
• Lehigh Crane Iron Company
• Library Video Company
• Lomma Golf
• Lost Nite Records
• Lutron Electronics Company
• Lycoming Engines

M

• MAACO
• MCA Solutions
• Mack Trucks
• Majestic Athletic
• Manheim Auctions
• McNeil Laboratories
• McGlynn Racing
• Media Five Entertainment
• MediaOne Group
• Medstar Television
• Millbourne Mills (Pennsylvania)
• Mine Safety Appliances
• MOS Technology
• Mrs. Smith's Pies
• Mrs. T's Pierogies
• G. C. Murphy
• My Medical Reports

N

• NCO Group
• NPCC Enterprises
• Natrona Bottling Company
• New Holland Machine Company