BKTY
| Union Pacific Railroad Company | 4 |
BNSF
| BNSF Railway | 10 |
CN
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 1 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 1 |
FBOX
| TTX Company | 7 |
GNRR
| Georgia Northeastern | 1 |
HS
| H and S Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 1 |
MRL
| Montana Rail Link | 1 |
NS
| Norfolk Southern | 9 |
RBOX
| Railbox Company | 2 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 11 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 15 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 1 |