AM
| Arkansas & Missouri | 2 |
ATW
| Atlantic and Western | 3 |
BAYL
| Bay Line, LLC | 1 |
BNSF
| BNSF Railway | 20 |
CLC
| Columbia and Cowlitz Railway Company | 4 |
CN
| Canadian National Railways | 7 |
COER
| Crab Orchard & Egyptian | 26 |
CR
| Conrail | 1 |
CRLE
| Coe Rail Incorporated | 6 |
FBOX
| TTX Company | 36 |
GACX
| General American Marks Company | 2 |
GMRC
| Green Mountain RR | 1 |
GTW
| Grand Trunk Western | 11 |
IBT
| International Bridge and Terminal Company | 3 |
KCS
| Kansas City Southern | 20 |
LRS
| Laurinburg and Southern | 14 |
LW
| Louisville and Wadley Railway Company | 1 |
MP
| Missouri Pacific | 3 |
MTNR
| Mississippi Tennessee Railroad LLC | 33 |
NOKL
| Northwestern Oklahoma | 102 |
NS
| Norfolk Southern | 6 |
QC
| Quebec Central | 3 |
SP
| Southern Pacific | 6 |
SRN
| Sabine River & Northern | 11 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 48 |
TOFX
| TTX Company - Box Cars | 8 |
TR
| Tomahawk Railway L.P. | 35 |
UCRY
| Utah Central | 2 |
UP
| Union Pacific Railroad Company | 8 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 5 |