ATW
| Atlantic and Western | 2 |
BNSF
| BNSF Railway | 4 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 1 |
CRLE
| Coe Rail Incorporated | 1 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
FBOX
| TTX Company | 9 |
GTW
| Grand Trunk Western | 1 |
NOKL
| Northwestern Oklahoma | 7 |
TR
| Tomahawk Railway L.P. | 2 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 1 |