AMTK
| Amtrak | 2 |
ATW
| Atlantic and Western | 4 |
BKTY
| Union Pacific Railroad Company | 2 |
CBQ
| Chicago Burlington & Quincy | 1 |
CMHX
| CarMath Incorporated | 1 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 2 |
CNIS
| Canadian National Railways | 7 |
CNW
| Chicago & Northwestern | 1 |
COER
| Crab Orchard & Egyptian | 2 |
CP
| Canadian Pacific Railway | 9 |
CSX
| CSX Railroad | 3 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DWC
| Canadian National Railways | 1 |
FSRR
| FerroSur | 4 |
FXE
| Ferromex | 5 |
GTW
| Grand Trunk Western | 2 |
ICG
| Illinois Central Gulf | 5 |
KCS
| Kansas City Southern | 4 |
MEC
| Maine Central | 1 |
MP
| Missouri Pacific | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 7 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 2 |
RBOX
| Railbox Company | 2 |
SMW
| St Marys Railway West LLC | 1 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
TBOX
| TTX Company | 7 |
TFM
| Kansas City Southern De Mexico | 2 |
TOFX
| TTX Company - Box Cars | 1 |
UP
| Union Pacific Railroad Company | 4 |