| 1 | Alpha Sigma Phi Delta Delta Chapter, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 2 | The Alumni Association of Beta Tau Chapter of Sigma Tau Gamma FraternityNot reported | Nonprofit | Not reported | Not reported |
| 3 | The Alumni Association of Gamma Delta Chapter of Sigma Pi FraternityNot reported | Nonprofit | Not reported | Not reported |
| 4 | Alumni Corporation of Zeta Alpha Chapter of Theta Chi FraternityNot reported | Nonprofit | Not reported | Not reported |
| 5 | Armco Park Country ClubNot reported | Corporation | Not reported | Not reported |
| 6 | Automotive National Brands, Inc.Not reported | Corporation | Not reported | Not reported |
| 7 | The Association of Regular Baptist Churches of Western Pennsylvania Youth Camp, IncorporatedNot reported | Nonprofit | Not reported | Not reported |
| 8 | Berthold Industries, Inc.Not reported | Corporation | Not reported | Not reported |
| 9 | Big Valley Coal CompanyNot reported | Corporation | Not reported | Not reported |
| 10 | Marvin Bookbinder D. O., Inc.Not reported | Corporation | Not reported | Not reported |
| 11 | Brady Township Beach AssociationNot reported | Nonprofit | Not reported | Not reported |
| 12 | Buco Transportation, Inc.Not reported | Corporation | Not reported | Not reported |
| 13 | Butler Valley Sports Car ClubNot reported | Nonprofit | Not reported | Not reported |
| 14 | Center United Presbyterian ChurchNot reported | Nonprofit | Not reported | Not reported |
| 15 | Cheeseman - Fleeger Motors, Inc.Not reported | Corporation | Not reported | Not reported |
| 16 | Cheeseman FoundationNot reported | Nonprofit | Not reported | Not reported |
| 17 | J W Cheeseman IncNot reported | Corporation | Not reported | Not reported |
| 18 | Cheeseman Motors CompanyNot reported | Corporation | Not reported | Not reported |
| 19 | Chutz Bros IncNot reported | Corporation | Not reported | Not reported |
| 20 | Rock-grove Good Food Co-operative AssociationNot reported | Corporation | Not reported | Not reported |
| 21 | Cooper Bros., Inc.Not reported | Corporation | Not reported | Not reported |
| 22 | H. W. Cooper & Sons, Inc.Not reported | Corporation | Not reported | Not reported |
| 23 | Cooper Lake Farms, Inc.Not reported | Corporation | Not reported | Not reported |
| 24 | The Deep Valley Christian Service Camp, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 25 | Norman J. Dubiel D.o., Inc.Not reported | Corporation | Not reported | Not reported |
| 26 | Duncan and Shields Coal IncNot reported | Corporation | Not reported | Not reported |
| 27 | Evans Land Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 28 | Fleeger Chevrolet-oldsmobile, Inc.Not reported | Corporation | Not reported | Not reported |
| 29 | Gipsy CampNot reported | Nonprofit | Not reported | Not reported |
| 30 | Howard Inc.Not reported | Corporation | Not reported | Not reported |
| 31 | Highway Sand & Gravel IncNot reported | Corporation | Not reported | Not reported |
| 32 | Hitching Post Western Wear, Inc.Not reported | Corporation | Not reported | Not reported |
| 33 | Jade Builders, Inc.Not reported | Corporation | Not reported | Not reported |
| 34 | First United Presbyterian Church of Slippery Rock BoroughNot reported | Nonprofit | Not reported | Not reported |
| 35 | Kutz Mfg. Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | Lambda Xi Zeta House Corporation of Lambda Chi Alpha FraternityNot reported | Nonprofit | Not reported | Not reported |
| 37 | Lauden IncorporatedNot reported | Corporation | Not reported | Not reported |
| 38 | Linetsky, Sam IncNot reported | Corporation | Not reported | Not reported |
| 39 | Mathies & Sons, Inc.Not reported | Corporation | Not reported | Not reported |
| 40 | Mcgowan Lumber Co., Inc.Not reported | Corporation | Not reported | Not reported |
| 41 | Methodist Church of Slippery Rock, Pa.Not reported | Nonprofit | Not reported | Not reported |
| 42 | Meyer Brothers Farm, Inc.Not reported | Corporation | Not reported | Not reported |
| 43 | Moraine Camplands Association, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 44 | Moraine Conservation and Sportsmen's AssociationNot reported | Nonprofit | Not reported | Not reported |
| 45 | Moraine Park Safari Camp, Inc.Not reported | Corporation | Not reported | Not reported |
| 46 | The Northwestern Butler County Industrial Development CorporationNot reported | Nonprofit | Not reported | Not reported |
| 47 | Northwestern Pennsylvania Hereford Breeders AssociationNot reported | Nonprofit | Not reported | Not reported |
| 48 | Old Stone House AssociatesNot reported | Nonprofit | Not reported | Not reported |
| 49 | Patrician Apartments, Inc.Not reported | Corporation | Not reported | Not reported |
| 50 | Pine Valley Rola-land, Inc.Not reported | Corporation | Not reported | Not reported |