| 1 | WPPI | WOODMONT PETROLEUM PRODUCTS INC | | | SCAC4 |
| 2 | WPPL | WESTPORT PETROLEUM INC | | | SCAC4 |
| 3 | WPPN | WEST PLAINS PROPANE INC | | | SCAC4 |
| 4 | WPPP | WESTERN PACIFIC PULP AND PAPER | | | SCAC4 |
| 5 | WPPT | WESTPOINT STEVENS, INC | | | SCAC1 |
| 6 | WPPV | White Plains & Pleasantville Bus Lines | | US-NY | TRAFFIC |
| 7 | WPPX | West Penn Power Co. | 8/1920-7/1930 | | NAKINA |
| 8 | WPPX | WestPoint Pepperell, Inc. | added 1/1978; 1/1980; eliminated 4/1982 | | NAKINA |
| 9 | WPPX | WestPoint Pepperell, Inc. | added 1/78; 1/80; eliminated 4/82 | | NRHS |
| 10 | WPPX | *WEST PENN POWER CO. | | | PWRC |
| 11 | WPPX | *WESTPOINT PEPPERELL, INC. | | | PWRC |
