| 1 | Allegheny Aviation, Inc.Not reported | Corporation | Not reported | Not reported |
| 2 | Associated Steel and Alloys IncNot reported | Corporation | Not reported | Not reported |
| 3 | Bertocci-johnson, Inc.Not reported | Corporation | Not reported | Not reported |
| 4 | Cast Metal Bars CorporationNot reported | Corporation | Not reported | Not reported |
| 5 | Castle Shannon Citizens' OrganizationNot reported | Nonprofit | Not reported | Not reported |
| 6 | Castle Shannon Youth ActivitiesNot reported | Nonprofit | Not reported | Not reported |
| 7 | Clairbrooke HouseNot reported | Nonprofit | Not reported | Not reported |
| 8 | Clinkscale, Inc.Not reported | Corporation | Not reported | Not reported |
| 9 | Conditioning Equipment, Inc.Not reported | Corporation | Not reported | Not reported |
| 10 | Convair IncNot reported | Corporation | Not reported | Not reported |
| 11 | Crest Builders Supply & Equipment CoNot reported | Corporation | Not reported | Not reported |
| 12 | D/o Sales CompanyNot reported | Corporation | Not reported | Not reported |
| 13 | Debaldo Construction Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 14 | Jim Forbes Co.Not reported | Corporation | Not reported | Not reported |
| 15 | Foster-mcclinton Inc.Not reported | Corporation | Not reported | Not reported |
| 16 | General Concrete Units Corp.Not reported | Corporation | Not reported | Not reported |
| 17 | Gill Hall Coal, Inc.Not reported | Corporation | Not reported | Not reported |
| 18 | Hall Gill Coal, Inc.Not reported | Corporation | Not reported | Not reported |
| 19 | Highland Enterprises IncNot reported | Corporation | Not reported | Not reported |
| 20 | Highview Recreation ClubNot reported | Nonprofit | Not reported | Not reported |
| 21 | J. J. Kirk CorporationNot reported | Corporation | Not reported | Not reported |
| 22 | Lebanon Terrace CorpNot reported | Corporation | Not reported | Not reported |
| 23 | The Lubri-surf CorporationNot reported | Corporation | Not reported | Not reported |
| 24 | Lucky Calendar Co IncNot reported | Corporation | Not reported | Not reported |
| 25 | Lusk, Harold C CoNot reported | Corporation | Not reported | Not reported |
| 26 | M. J. Lutz, Inc.Not reported | Corporation | Not reported | Not reported |
| 27 | M. D. CorporationNot reported | Corporation | Not reported | Not reported |
| 28 | A. R. Marsico Concrete Corp.Not reported | Corporation | Not reported | Not reported |
| 29 | Martin & Elliott Inc.Not reported | Corporation | Not reported | Not reported |
| 30 | Martin Plumbing and Heating, Inc.Not reported | Corporation | Not reported | Not reported |
| 31 | Mcbride Construction Co. Inc.Not reported | Corporation | Not reported | Not reported |
| 32 | Origineers, Inc.Not reported | Corporation | Not reported | Not reported |
| 33 | Pennsylvania Ion-exchange Equipment CoNot reported | Corporation | Not reported | Not reported |
| 34 | Pittsburgh Drapery Cleaning, Inc.Not reported | Corporation | Not reported | Not reported |
| 35 | Rector O. A.,incorporatedNot reported | Corporation | Not reported | Not reported |
| 36 | Rubberized Safety Products, Inc.Not reported | Corporation | Not reported | Not reported |
| 37 | Saxonwald Florists IncNot reported | Corporation | Not reported | Not reported |
| 38 | Saxonwald Greenhouses IncNot reported | Corporation | Not reported | Not reported |
| 39 | Saxonwald Flower and Gift Shop, Inc.Not reported | Corporation | Not reported | Not reported |
| 40 | Sea Isle Pools, IncorporatedNot reported | Corporation | Not reported | Not reported |
| 41 | Shannon - Baldwin News, Inc.Not reported | Corporation | Not reported | Not reported |
| 42 | The Sherwood Forest BowmenNot reported | Nonprofit | Not reported | Not reported |
| 43 | Sophia University Associates of AmericaNot reported | Nonprofit | Not reported | Not reported |
| 44 | Steel City Piping CompanyNot reported | Corporation | Not reported | Not reported |
| 45 | Tennyson Realty CompanyNot reported | Corporation | Not reported | Not reported |
| 46 | United Millwork IncNot reported | Corporation | Not reported | Not reported |
| 47 | Valley View Dwellings IncNot reported | Corporation | Not reported | Not reported |
| 48 | Voss Machinery CompanyNot reported | Corporation | Not reported | Not reported |
| 49 | Whitehall Plumbing Co IncNot reported | Corporation | Not reported | Not reported |