AOK
| Arkansas-Oklahoma Railroad | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 1 |
CN
| Canadian National Railways | 1 |
DWC
| Canadian National Railways | 2 |
GTW
| Grand Trunk Western | 3 |
IATR
| Iowa Traction Railroad Company | 1 |
KCS
| Kansas City Southern | 2 |
KCSM
| Kansas City Southern De Mexico | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 4 |
SLGG
| Progress Rail Services Corporation | 1 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
WC
| Wisconsin Central | 3 |