| 1 | TATX | Tanco Transportation Corp. | added 7/1979; 1/1980; eliminated 4/1989 | | NAKINA |
| 2 | TATX | General Electric Railcar Services Corp. | 1/1994; eliminated 1/2000 | | NAKINA |
| 3 | TATX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 4 | TATX | Tanco Transportation Corp. | added 7/79; 1/80; eliminated 4/89 | | NRHS |
| 5 | TATX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 6 | TATX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 7 | TATX | (NATX) GEN. ELECTRIC RAIL SERVICES CORP. [TANCO TRANSPORTATION CO.] | | | PWRC |
| 8 | TATX | Tanco Transportation Corporation | | | RSRV |
| 9 | TATX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |