| 1 | HTW | Hoosac Tunnel & Wilmington | 1/1994-7/2000 | | NAKINA |
| 2 | HTW | Hoosac Tunnel & Wilmington | 1/94-7/2000 | | NRHS |
| 3 | HTW | *HOOSAC TUNNEL AND WILMINGTON RAILROAD CO. | | | PWRC |
| 4 | HTW | Hoosac Tunnel and Wilmington | | | RSRV |
| 5 | HTWA | HODGE TRANSPORTATION & WAREHOUSING | | | SCAC4 |
| 6 | HTWC | HALAL TOWING INC | | | SCAC4 |
| 7 | HTWD | HOOSIER TRADEWINDS INC | | | SCAC4 |
| 8 | HTWF | H2O FARMS | | | SCAC4 |
| 9 | HTWG | HARTWIG, C TRANSPORT | | | SCAC4 |
| 10 | HTWH | HAMILTON, E H TRUCKING & | | | SCAC4 |
| 11 | HTWI | HARTWIG AIRCRAFT FUEL CELL REPAIR I | | | SCAC4 |
| 12 | HTWJ | HTW LOGISTICS | | | SCAC4 |
| 13 | HTWK | HAULMARK TRUCKING INC | | | SCAC4 |
| 14 | HTWM | HATCHER, WILLIAM RAY TRUCKING CO | | | SCAC4 |
| 15 | HTWQ | HAMNER TOWING INC | | | SCAC4 |
| 16 | HTWT | HOT WATER TRUCKING LLC | | | SCAC4 |
| 17 | HTWV | H TWO (2) | | | SCAC4 |
| 18 | HTWY | HUTTER, WALLY OIL CO | | | SCAC4 |
