ATW
| Atlantic and Western | 1 |
BNSF
| BNSF Railway | 2 |
CN
| Canadian National Railways | 2 |
CRLE
| Coe Rail Incorporated | 4 |
FBOX
| TTX Company | 56 |
GMRC
| Green Mountain RR | 4 |
GTW
| Grand Trunk Western | 5 |
IBT
| International Bridge and Terminal Company | 6 |
MRL
| Montana Rail Link | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NYC
| New York Central | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SP
| Southern Pacific | 3 |
UP
| Union Pacific Railroad Company | 4 |
WC
| Wisconsin Central | 1 |