| 1 | ELSX | Kentucky May Coal Co., Inc. | added 1/1990; 1/1994; eliminated 7/1998; 7/2000-7/2005 (not listed) | | NAKINA |
| 2 | ELSX | Eastern Live Stock Express Co. | 7/1930-1/1943 | | NAKINA |
| 3 | ELSX | Eastern Live Stock Express Co. | Apr-38 | | NRHS |
| 4 | ELSX | Kentucky May Coal Co., Inc. | added 1/90; 1/94; eliminated 7/98; 7/2000 | | NRHS |
| 5 | ELSX | *EASTERN LIVE STOCK EXPRESS CO. | | | PWRC |
| 6 | ELSX | +KENTUCKY MAY COAL COMPANY, INC. | | | PWRC |
| 7 | ELSX | Kentucky May Coal | | | RSRV |
