| 1 | GWEC | GARWIN EXPRESS LLC | | | SCAC4 |
| 2 | GWED | GOLD WING EXPRESS LLC | | | SCAC4 |
| 3 | GWEH | GATEWAY EXHIBIT SERVICES | | | SCAC4 |
| 4 | GWEL | GLEN WEST EXPRESS LTD | | | SCAC4 |
| 5 | GWER | Gateway Eastern Railway (Kansas City Southern Railway) | | | RSRV |
| 6 | GWER | GREAT WESTERN ENTERPRISES | | | SCAC4 |
| 7 | GWET | GROWER EXPRESS TRUCKING INC | | | SCAC4 |
| 8 | GWEX | Western Division, The Dow Chemical Co. | 1/1952-7/1965; eliminated 1/1966 | | NAKINA |
| 9 | GWEX | Great Western Division, The Dow Chemical Co. | 1/1941-1/1950 | | NAKINA |
| 10 | GWEX | Great Western Electro-Chemical Co. | 7/1930-4/1938 | | NAKINA |
| 11 | GWEX | Great Western Electro-Chemical Co. | Apr-38 | | NRHS |
| 12 | GWEX | Western Division, The Dow Chemical Co. | 1/52-7/65; eliminated 1/66 | | NRHS |
| 13 | GWEX | WESTERN DIV., DOW CHEMICAL CO.{GREAT WESTERN ELECTRO-CHEMICAL CO.] | | | PWRC |
