BNSF
| BNSF Railway | 1 |
FBOX
| TTX Company | 18 |
KCS
| Kansas City Southern | 5 |
LRS
| Laurinburg and Southern | 1 |
NOKL
| Northwestern Oklahoma | 9 |
NS
| Norfolk Southern | 1 |
QC
| Quebec Central | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 3 |