| 1 | Alrod Service Corp.Not reported | Corporation | Not reported | Not reported |
| 2 | Car Parks IncNot reported | Corporation | Not reported | Not reported |
| 3 | Char-steak House, Inc.Not reported | Corporation | Not reported | Not reported |
| 4 | The Charleroi Messenger CompanyNot reported | Corporation | Not reported | Not reported |
| 5 | Columbia 491 IncNot reported | Nonprofit | Not reported | Not reported |
| 6 | Diener Brick CompanyNot reported | Corporation | Not reported | Not reported |
| 7 | Donfry Electric Co.Not reported | Corporation | Not reported | Not reported |
| 8 | W. M. Eakin & Sons, Inc.Not reported | Corporation | Not reported | Not reported |
| 9 | Economy Smokeater IncNot reported | Corporation | Not reported | Not reported |
| 10 | Elasticon Contact Lens, Inc.Not reported | Corporation | Not reported | Not reported |
| 11 | Executive Counsellors, Inc.Not reported | Corporation | Not reported | Not reported |
| 12 | General Piping CorporationNot reported | Corporation | Not reported | Not reported |
| 13 | Greenville Shopping Center, Inc.Not reported | Corporation | Not reported | Not reported |
| 14 | Gulf Coast, Inc.Not reported | Corporation | Not reported | Not reported |
| 15 | Gullo Produce CompanyNot reported | Corporation | Not reported | Not reported |
| 16 | Kitchen-maid Food of Pennsylvania, Inc.Not reported | Corporation | Not reported | Not reported |
| 17 | Lenhart & Taylor IncNot reported | Corporation | Not reported | Not reported |
| 18 | Leslie Industries, Inc.Not reported | Corporation | Not reported | Not reported |
| 19 | Lewis, Fielding Associates, IncorporatedNot reported | Corporation | Not reported | Not reported |
| 20 | Malgreen Clothing IncNot reported | Corporation | Not reported | Not reported |
| 21 | Market Survey Bureau IncNot reported | Corporation | Not reported | Not reported |
| 22 | Mccarthy Brothers and Associates Inc.Not reported | Corporation | Not reported | Not reported |
| 23 | Midwest Brewers' Yeast CorporationNot reported | Corporation | Not reported | Not reported |
| 24 | Midwest Chemical CompanyNot reported | Corporation | Not reported | Not reported |
| 25 | National Lightning Protection CompanyNot reported | Corporation | Not reported | Not reported |
| 26 | The Ohio Boxboard Co Inc.Not reported | Corporation | Not reported | Not reported |
| 27 | Oil City Glass CompanyNot reported | Corporation | Not reported | Not reported |
| 28 | Pallan, Art Co IncNot reported | Corporation | Not reported | Not reported |
| 29 | Pavement Salvage IncNot reported | Corporation | Not reported | Not reported |
| 30 | Peiger J. J. CompanyNot reported | Corporation | Not reported | Not reported |
| 31 | Pension & Profit Sharing Service CompanyNot reported | Corporation | Not reported | Not reported |
| 32 | Pittsburgh Produce Terminal AssociationNot reported | Nonprofit | Not reported | Not reported |
| 33 | Planographic Studios, Inc.Not reported | Corporation | Not reported | Not reported |
| 34 | Point Studios IncNot reported | Corporation | Not reported | Not reported |
| 35 | Poly-sil, Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | The R T Building IncNot reported | Corporation | Not reported | Not reported |
| 37 | Reclaimix East IncNot reported | Corporation | Not reported | Not reported |
| 38 | Recreo, Inc.Not reported | Corporation | Not reported | Not reported |
| 39 | Reynolds Supply CoNot reported | Corporation | Not reported | Not reported |
| 40 | Rossi & Novak Tailors, Inc.Not reported | Corporation | Not reported | Not reported |
| 41 | S. K. O. CorporationNot reported | Corporation | Not reported | Not reported |
| 42 | Seamaster Division of Jafco Marine IncNot reported | Corporation | Not reported | Not reported |
| 43 | H. H. Seifferth Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 44 | Self-help Development CorporationNot reported | Corporation | Not reported | Not reported |
| 45 | Steel City InstituteNot reported | Nonprofit | Not reported | Not reported |
| 46 | Tower, Elwood S. Inc.Not reported | Corporation | Not reported | Not reported |
| 47 | Toy Wonderland, Inc.Not reported | Corporation | Not reported | Not reported |
| 48 | Travelguide Publishers, Inc.Not reported | Corporation | Not reported | Not reported |
| 49 | Treasure Island Department Stores, Inc.Not reported | Corporation | Not reported | Not reported |
| 50 | Tri-state Wholesale Furniture Distributors IncNot reported | Corporation | Not reported | Not reported |