| 1 | PWPA | POWERS ENERGY CORPORATION | | | SCAC4 |
| 2 | PWPC | PACIFIC WEST PAPER CO INC | | | SCAC3 |
| 3 | PWPC | PROPWORKS PROPELLER SYSTEMS IN | | | SCAC4 |
| 4 | PWPD | PRICE WOOD PRODUCT | | | SCAC4 |
| 5 | PWPN | POWER PETROLEUM TRANSPORT INC | | | SCAC4 |
| 6 | PWPO | PHOENIX WOOD PRODUCTS CORPORATION | | | SCAC4 |
| 7 | PWPR | PRECISION WOOD PRODUCTS | | | SCAC4 |
| 8 | PWPT | POWERPACT LLC | | | SCAC4 |
| 9 | PWPVR | Public Works s.l. | | ES | VKM |
| 10 | PWPX | Preway, Inc. | added 1/1954; eliminated 7/1956 | | NAKINA |
| 11 | PWPX | Prentiss Wabers Products Co. | 1/1950-1/1952; eliminated 1/1954 | | NAKINA |
| 12 | PWPX | Prentiss Wabers Products Co. | Jan-52 | | NRHS |
| 13 | PWPX | Preway, Inc. | eliminated 7/56 | | NRHS |
| 14 | PWPX | PREWAY, INC. [PRENTISS WABERS PRODUCTS CO.] | | | PWRC |
