| 1 | A B C Nursery School of Irwin, PennsylvaniaNot reported | Nonprofit | Not reported | Not reported |
| 2 | A. C. Motor Sales, Inc.Not reported | Corporation | Not reported | Not reported |
| 3 | A & M Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 4 | Abco IncNot reported | Corporation | Not reported | Not reported |
| 5 | Academy Advertising, Inc.Not reported | Corporation | Not reported | Not reported |
| 6 | Adrilee Inc.Not reported | Corporation | Not reported | Not reported |
| 7 | Aggressive Builders, Inc.Not reported | Corporation | Not reported | Not reported |
| 8 | Air Supreme, Inc.Not reported | Corporation | Not reported | Not reported |
| 9 | Altman's , George Mills, Inc.Not reported | Corporation | Not reported | Not reported |
| 10 | Altmans' IncNot reported | Corporation | Not reported | Not reported |
| 11 | American Miniature Theatre, Inc.Not reported | Corporation | Not reported | Not reported |
| 12 | Anticipation Maternity Shops, Inc.Not reported | Corporation | Not reported | Not reported |
| 13 | Arteekay Co.Not reported | Corporation | Not reported | Not reported |
| 14 | Automatic Dispensers, Inc.Not reported | Corporation | Not reported | Not reported |
| 15 | B. D. Motors Inc.Not reported | Corporation | Not reported | Not reported |
| 16 | B & H Supplies IncNot reported | Corporation | Not reported | Not reported |
| 17 | Baines & Polk Mfg CoNot reported | Corporation | Not reported | Not reported |
| 18 | The Baldoc Hills Country Club IncNot reported | Corporation | Not reported | Not reported |
| 19 | Balog Homes IncNot reported | Corporation | Not reported | Not reported |
| 20 | Barnacle Bill's , Inc.Not reported | Corporation | Not reported | Not reported |
| 21 | Barney Realty, Inc.Not reported | Corporation | Not reported | Not reported |
| 22 | Barry-ward Supply CorporationNot reported | Corporation | Not reported | Not reported |
| 23 | Baughman, Glenn J & Sons IncNot reported | Corporation | Not reported | Not reported |
| 24 | Belle Bar, Inc.Not reported | Corporation | Not reported | Not reported |
| 25 | Bergad's Department Store, Inc.Not reported | Corporation | Not reported | Not reported |
| 26 | Bermar Homes, Inc.Not reported | Corporation | Not reported | Not reported |
| 27 | Best Wholesale, Inc.Not reported | Corporation | Not reported | Not reported |
| 28 | Bethany Acres, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 29 | Bilott C. & Sons Builders Supplies, Inc.Not reported | Corporation | Not reported | Not reported |
| 30 | Bittner Tire and Supply, Inc.Not reported | Corporation | Not reported | Not reported |
| 31 | Blue Dell Swimming ClubNot reported | Nonprofit | Not reported | Not reported |
| 32 | Bombay American International Trading CorporationNot reported | Corporation | Not reported | Not reported |
| 33 | William A. Bradley, M.d. AssociatesNot reported | Corporation | Not reported | Not reported |
| 34 | Brentzel Builders & Supply CompanyNot reported | Corporation | Not reported | Not reported |
| 35 | Bronks' Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | Bud's Red Hots Inc of Irwin PaNot reported | Corporation | Not reported | Not reported |
| 37 | Buzz's O. K. Corral, Inc.Not reported | Corporation | Not reported | Not reported |
| 38 | Byerly Crest CorporationNot reported | Corporation | Not reported | Not reported |
| 39 | C & H Auto-truck Rustproffing, Inc.Not reported | Corporation | Not reported | Not reported |
| 40 | C & S Electronics, Inc.Not reported | Corporation | Not reported | Not reported |
| 41 | Calvary AssemblyNot reported | Nonprofit | Not reported | Not reported |
| 42 | Calvary Grace Church of Faith of North Huntingdon TownshipNot reported | Nonprofit | Not reported | Not reported |
| 43 | Camp SunsetNot reported | Nonprofit | Not reported | Not reported |
| 44 | D. H. Campbell & Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 45 | Cantina Gloria's Lounge, Inc.Not reported | Corporation | Not reported | Not reported |
| 46 | Capital Dry Wall, Inc.Not reported | Corporation | Not reported | Not reported |
| 47 | Carlton Motel, Inc.Not reported | Corporation | Not reported | Not reported |
| 48 | Carradam, Inc.Not reported | Corporation | Not reported | Not reported |
| 49 | Castle Meats, Inc.Not reported | Corporation | Not reported | Not reported |
| 50 | Cavittsville Sportsmens ClubNot reported | Nonprofit | Not reported | Not reported |