| 1 | GAUX | General American Transportation Corp. | 1/1975-1/1980; eliminated 10/1992 | | NAKINA |
| 2 | GAUX | General American Transportation Corp., Freight Car Division | added 11/1973 | | NAKINA |
| 3 | GAUX | General American Transportation Corp., Freight Car Division | added 11/73 | | NRHS |
| 4 | GAUX | General American Transportation Corp. | 1/75-1/80; eliminated 10/92 | | NRHS |
| 5 | GAUX | RETIRED 08-19-92 ATP(1380) [GATX] | | | PWRC |
| 6 | GAUX | General American Transportation Corporation (GATX) | | | RSRV |