ADN
| Ashley Drew & Northern | 2 |
AERC
| Albany and Eastern Railroad Company | 1 |
ANR
| Angelina and Neches River Railroad | 2 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BAEX
| Andersons | 1 |
BAR
| Bangor & Aroostook | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 10 |
CMHX
| CarMath Incorporated | 2 |
CNA
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 3 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 5 |
DRGW
| Denver & Rio Grande Western | 2 |
EEC
| East Erie Commercial Railroad | 10 |
FBOX
| TTX Company | 1 |
FXE
| Ferromex | 1 |
GMRC
| Green Mountain RR | 1 |
GMSR
| Kansas City Southern | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 4 |
HS
| H and S Railroad Company | 10 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 6 |
KRR
| Kiamichi | 1 |
LRWN
| Little Rock & Western | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 2 |
MET
| Modesto and Empire Traction Company | 1 |
MP
| Missouri Pacific | 3 |
MRL
| Montana Rail Link | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 2 |
NOPB
| New Orleans Public Belt Railroad | 2 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 1 |
NSHR
| North Shore | 2 |
NW
| Norfolk & Western | 1 |
RBOX
| Railbox Company | 2 |
SLSF
| Saint Louis-San Francisco | 2 |
SO
| South Orient | 1 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 11 |
SRN
| Sabine River & Northern | 3 |
SRY
| Southern Railway of British Columbia Lim | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
STE
| Stockton Terminal and Eastern RR | 1 |
TBOX
| TTX Company | 4 |
TFM
| Kansas City Southern De Mexico | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 3 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 1 |
WCCL
| Wisconsin Central | 1 |
WP
| Western Pacific | 7 |
WSOR
| Wisconsin & Southern | 2 |