| 1 | ECOX | Eco East | 1/1994 (not listed); added 1/1997; eliminated 4/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 2 | ECOX | Eagle Cotton Oil Co. | 7/1935-10/1966; eliminated 10/1968 | | NAKINA |
| 3 | ECOX | Eagle Cotton Oil Co. | 4/38-10/66; eliminated 10/68 | | NRHS |
| 4 | ECOX | Eco East | 1/94; added 1/97; eliminated 4/97; 7/2000 | | NRHS |
| 5 | ECOX | *EAGLE COTTON OIL CO. | | | PWRC |
| 6 | ECOX | +ECO EAST | | | PWRC |
| 7 | ECOX | Eco East | | | RSRV |
| 8 | ECOX | EAGLE COTTON OIL CO | | | SCAC3 |
| 9 | ECOX | ECO EAST | | | SCAC4 |
