| 1 | HWRC | HALL, W R COMPANY INC | | | SCAC4 |
| 2 | HWRD | HOWARDS INC | | | SCAC4 |
| 3 | HWRE | Heinrich Wilhelm Waggonbau- und Vertriebs GmbH & Co. KG | | DE | VKM |
| 4 | HWRF | HOWE, ROBERT F | | | SCAC4 |
| 5 | HWRI | HWR | | | SCAC4 |
| 6 | HWRK | HARSHAW TRUCKING | | | SCAC4 |
| 7 | HWRS | HAND, W R & SONS TRUCKING LLC | | | SCAC4 |
| 8 | HWRX | Hi-Way Refineries Ltd. | 4/1947-1/1952; eliminated 7/1953 | | NAKINA |
| 9 | HWRX | Hi-Way Refineries Ltd. | Jan-52 | | NRHS |
| 10 | HWRX | HI-WAY REFINERIES LTD. | | | PWRC |
