AERC
| Albany and Eastern Railroad Company | 5 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
CN
| Canadian National Railways | 4 |
DWC
| Canadian National Railways | 2 |
GTW
| Grand Trunk Western | 1 |
NOKL
| Northwestern Oklahoma | 2 |
SERA
| Sierra Northern Railway | 1 |
SMW
| St Marys Railway West LLC | 1 |
TTZX
| TTX Company-Centerbeam Flats | 6 |
WCRC
| Washington Central | 12 |