AERC
| Albany and Eastern Railroad Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
ATW
| Atlantic and Western | 4 |
BAEX
| Andersons | 1 |
BCOL
| Canadian National Railways | 3 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 4 |
CCR
| Corinth & Counce | 1 |
CIC
| Cedar Rapids & Iowa City | 1 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CN
| Canadian National Railways | 5 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 4 |
CSX
| CSX Railroad | 2 |
CVC
| Canadian National Railways | 1 |
DME
| Dakota, Minnesota and Eastern | 4 |
DRGW
| Denver & Rio Grande Western | 1 |
DTI
| Detroit Toledo & Ironton | 1 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 2 |
FBOX
| TTX Company | 1 |
FC
| Fulton County Railroad Incorporated | 1 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 1 |
FXE
| Ferromex | 2 |
GNRR
| Georgia Northeastern | 1 |
GTW
| Grand Trunk Western | 2 |
GVSR
| Galveston Railroad L.P. | 5 |
HCGX
| COMPASS MINERALS INTERNATIONAL INC | 1 |
HLMX
| Helm Financial Corporation | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 3 |
IATR
| Iowa Traction Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 3 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 2 |
LNAC
| Chattahoochee Bay Railroad, LLC | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MP
| Missouri Pacific | 8 |
MWCX
| Midwest Railcar Corporation | 1 |
NAR
| Northern Alberta Railways | 1 |
NS
| Norfolk Southern | 2 |
NSHR
| North Shore | 1 |
RBOX
| Railbox Company | 2 |
SLSF
| Saint Louis-San Francisco | 1 |
SM
| St. Marys Railroad | 2 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 19 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
STE
| Stockton Terminal and Eastern RR | 1 |
TBOX
| TTX Company | 4 |
TOE
| Texas Oklahoma and Eastern RR Company | 3 |
UP
| Union Pacific Railroad Company | 1 |
VCY
| Galveston Railroad, L.P. | 3 |
WC
| Wisconsin Central | 1 |
WCCL
| Wisconsin Central | 1 |
WSOR
| Wisconsin & Southern | 1 |
YARR
| Youngstown and Austintown Railroad | 1 |