Pennsylvania
| Company | Category | Area | Address | Web | Contact person | |
| THRESHOLD INC | Non-Profit Organizations | Pennsylvania | 111 TRIDICO WAY, GREENSBURG, Westmoreland, Pennsylvania, 15601-2627, USA | - | - | Jean Wigle |
| THRESHOLD REHABILITATION SVC | Rehabilitation Services | Pennsylvania | 1000 LANCASTER AVE, READING, Berks, Pennsylvania, 19607-1699, USA | www.trsinc.org | - | Ronald Williams |
| THRESHOLD SPORTS LLC | Sports Promoters Managers & Re | Pennsylvania | 2650 EISENHOWER AVE # 100, NORRISTOWN, Montgomery, Pennsylvania, 19403-2314, USA | - | - | - |