ATW
| Atlantic and Western | 1 |
BNSF
| BNSF Railway | 1 |
FBOX
| TTX Company | 4 |
KCS
| Kansas City Southern | 7 |
LW
| Louisville and Wadley Railway Company | 1 |
NOKL
| Northwestern Oklahoma | 4 |
NS
| Norfolk Southern | 1 |
SLR
| St Lawrence & Atlantic | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 4 |
TR
| Tomahawk Railway L.P. | 2 |