| 1 | GAYC | GAY OIL COMPANY INC | | | SCAC4 |
| 2 | GAYD | GAYS WREATHS | | | SCAC4 |
| 3 | GAYL | GAYLORD FEED AND GRAIN INC | | | SCAC4 |
| 4 | GAYT | GAY TRUCK LINE, INC | | | SCAC1 |
| 5 | GAYU | SA ELECTRICITY GAY | | F | BIC |
| 6 | GAYX | General American Transportation Corp. | added 7/1972; 1/1975-1/1980; eliminated 10/1992 | | NAKINA |
| 7 | GAYX | General American Transportation Corp. | 1/75-1/80; eliminated 10/92 | | NRHS |
| 8 | GAYX | RETIRED 08-19-92 ATP (1861) [GATX] | | | PWRC |
| 9 | GAYX | General American Transportation Corporation (GATX) | | | RSRV |
| 10 | GAYZ | GAYLORD MILL | | | PWRC |
