| 1 | Ah-rs Coal CorporationNot reported | Corporation | Not reported | Not reported |
| 2 | A & R Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 3 | Accordion and Guitar Music ClubNot reported | Nonprofit | Not reported | Not reported |
| 4 | Acquisition Management, Inc.Not reported | Corporation | Not reported | Not reported |
| 5 | Addison, Inc.Not reported | Corporation | Not reported | Not reported |
| 6 | The Advance CorporationNot reported | Corporation | Not reported | Not reported |
| 7 | Advisory Board of the Pittsburgh District of the Church of the NazareneNot reported | Nonprofit | Not reported | Not reported |
| 8 | Alan's Shoes IncNot reported | Corporation | Not reported | Not reported |
| 9 | The Aljoe ClubNot reported | Nonprofit | Not reported | Not reported |
| 10 | Dbs Telecommunication IncorporatedNot reported | Corporation | Not reported | Not reported |
| 11 | The American Austin Car Company IncorporatedNot reported | Corporation | Not reported | Not reported |
| 12 | The American Bantam Athletic ClubNot reported | Nonprofit | Not reported | Not reported |
| 13 | American Land and Leisure CorporationNot reported | Corporation | Not reported | Not reported |
| 14 | American Land and Leisure Development CorporationNot reported | Corporation | Not reported | Not reported |
| 15 | American Truck Owners Corp.Not reported | Corporation | Not reported | Not reported |
| 16 | Amsco Drilling CorporationNot reported | Corporation | Not reported | Not reported |
| 17 | Ray Andre IncNot reported | Corporation | Not reported | Not reported |
| 18 | Anton Realty CompanyNot reported | Corporation | Not reported | Not reported |
| 19 | Apenn Oil CompanyNot reported | Corporation | Not reported | Not reported |
| 20 | Aqua-age, Inc.Not reported | Corporation | Not reported | Not reported |
| 21 | Ardore, Luigi IncNot reported | Corporation | Not reported | Not reported |
| 22 | Armstrong Utilities, Inc.Not reported | Corporation | Not reported | Not reported |
| 23 | Automotive Auction Publishing IncNot reported | Corporation | Not reported | Not reported |
| 24 | Associated Artists of Butler CountyNot reported | Nonprofit | Not reported | Not reported |
| 25 | Associated Posters, IncorporatedNot reported | Corporation | Not reported | Not reported |
| 26 | The Association of Mayors of the Boroughs of Pennsylvania, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 27 | Autobody Products, Inc.Not reported | Corporation | Not reported | Not reported |
| 28 | Bgb CorporationNot reported | Corporation | Not reported | Not reported |
| 29 | Bryg IncNot reported | Corporation | Not reported | Not reported |
| 30 | Baird-sturdevant Company IncNot reported | Corporation | Not reported | Not reported |
| 31 | Baldauf-hewitt CorporationNot reported | Corporation | Not reported | Not reported |
| 32 | Charlie Barrett Sales & Service, Inc.Not reported | Corporation | Not reported | Not reported |
| 33 | Barron Radio Supply IncNot reported | Corporation | Not reported | Not reported |
| 34 | Bartoli's Cleaners and Shirt Laundry, Inc.Not reported | Corporation | Not reported | Not reported |
| 35 | Albert J. Bauer Jr., Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | Dr. Bella and AssociatesNot reported | Corporation | Not reported | Not reported |
| 37 | Bergmor CorpNot reported | Corporation | Not reported | Not reported |
| 38 | Bergmor CorpNot reported | Corporation | Not reported | Not reported |
| 39 | Bevan Equipment CompanyNot reported | Corporation | Not reported | Not reported |
| 40 | Biho, Inc.Not reported | Corporation | Not reported | Not reported |
| 41 | Bill's Bargain Store No 2 Inc.Not reported | Corporation | Not reported | Not reported |
| 42 | Black Dragon Coal CompanyNot reported | Corporation | Not reported | Not reported |
| 43 | Black Prince Coal CompanyNot reported | Corporation | Not reported | Not reported |
| 44 | Blacktown Coal Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 45 | Frederick O. Blankenship Post #117, of the American Legion, of Butler, Pa.Not reported | Nonprofit | Not reported | Not reported |
| 46 | Heritage Specialties, Inc.Not reported | Corporation | Not reported | Not reported |
| 47 | Bon Aire Construction Company IncNot reported | Corporation | Not reported | Not reported |
| 48 | Bon-griff, Inc.Not reported | Corporation | Not reported | Not reported |
| 49 | Borne Chemical Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 50 | Boydstown Coal CompanyNot reported | Corporation | Not reported | Not reported |