AOK
| Arkansas-Oklahoma Railroad | 1 |
CNW
| Chicago & Northwestern | 1 |
CSX
| CSX Railroad | 3 |
IBT
| International Bridge and Terminal Company | 1 |
KCS
| Kansas City Southern | 1 |
KCSM
| Kansas City Southern De Mexico | 1 |
NOKL
| Northwestern Oklahoma | 2 |
RBOX
| Railbox Company | 1 |
TBOX
| TTX Company | 4 |
UP
| Union Pacific Railroad Company | 2 |
WP
| Western Pacific | 1 |