ALY
| Allegheny and Eastern Railroad Incorpora | 2 |
ATW
| Atlantic and Western | 13 |
BNSF
| BNSF Railway | 39 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CN
| Canadian National Railways | 4 |
FBOX
| TTX Company | 40 |
GMRC
| Green Mountain RR | 1 |
GTW
| Grand Trunk Western | 8 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 2 |
KCS
| Kansas City Southern | 1 |
MCSA
| Moscow Camden and San Augustine Railroad | 4 |
MMA
| Montreal, Maine & Atlantic | 2 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 1 |
NADX
| General Electric Rail Services | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 17 |
NWR
| Nashville & Western Railroad Corp. | 2 |
TOFX
| TTX Company - Box Cars | 2 |
WC
| Wisconsin Central | 2 |
WRWK
| Providence & Worchester Railroad | 1 |