ADN
| Ashley Drew & Northern | 1 |
ALAB
| Alabama Railroad | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ASAB
| Bay Line Railroad LLC | 2 |
ATW
| Atlantic and Western | 2 |
BNSF
| BNSF Railway | 1 |
BR
| Buffalo and Pittsburgh | 1 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 12 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 7 |
CVC
| Canadian National Railways | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
EEC
| East Erie Commercial Railroad | 5 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 1 |
GTW
| Grand Trunk Western | 3 |
GVSR
| Galveston Railroad L.P. | 5 |
HS
| H and S Railroad Company | 5 |
HSCX
| Steel Wheels Limited | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 5 |
KCS
| Kansas City Southern | 2 |
LRWN
| Little Rock & Western | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MP
| Missouri Pacific | 17 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NS
| Norfolk Southern | 4 |
NW
| Norfolk & Western | 5 |
NYC
| New York Central | 2 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 6 |
SOO
| Soo Line | 1 |
SOU
| Southern | 8 |
SP
| Southern Pacific | 24 |
SRN
| Sabine River & Northern | 10 |
SSW
| St Louis Southwestern (Cotton Belt) | 5 |
STE
| Stockton Terminal and Eastern RR | 6 |
TBOX
| TTX Company | 1 |
TFM
| Kansas City Southern De Mexico | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 2 |
UP
| Union Pacific Railroad Company | 10 |
VCY
| Galveston Railroad, L.P. | 2 |
WC
| Wisconsin Central | 7 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WP
| Western Pacific | 7 |
WSOR
| Wisconsin & Southern | 1 |