| 1 | ARMH | Union Pacific R.R. Co. | added 4/1997; 7/2000-7/2005 | | NAKINA |
| 2 | ARMH | Missouri Pacific System | 1/1994; eliminated 4/1997 | | NAKINA |
| 3 | ARMH | Doniphan, Kensett & Searcy Ry. | added 1/1976; 1/1980 | | NAKINA |
| 4 | ARMH | Texas-New Mexico Ry. Co. | added 7/1975; eliminated 1/1976 | | NAKINA |
| 5 | ARMH | Missouri Pacific R.R. Co. | added 1/1975; 1/1975; eliminated 7/1975 | | NAKINA |
| 6 | ARMH | Missouri Pacific R.R. Co. | added 1/75; 1/75; eliminated 7/75 | | NRHS |
| 7 | ARMH | Texas-New Mexico Ry. Co. | added 7/75 | | NRHS |
| 8 | ARMH | Doniphan, Kensett & Searcy Ry. | Jan-80 | | NRHS |
| 9 | ARMH | Missouri Pacific System | 1/94; eliminated 4/97 | | NRHS |
| 10 | ARMH | Union Pacific R.R. Co. | added 4/97; 7/2000 | | NRHS |
| 11 | ARMH | UP [(DKS) MISSOURI PACIFIC (LEASED THROUGH ART FROM MILLER BREWING)] | | | PWRC |
| 12 | ARMH | Missouri Pacific Railroad (Union Pacific Railroad) | | | RSRV |
| 13 | ARMH | AVAIL RESOURCE MANAGEMENT INC | | | SCAC4 |