AG
| Galveston Railroad L.P. | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AM
| Arkansas & Missouri | 1 |
AMTK
| Amtrak | 1 |
AN
| Apalachicola Northern | 1 |
ARN
| Alberta RailNet Incorporated | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 1 |
BO
| Baltimore & Ohio | 1 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 4 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
COP
| City of Prineville Railway | 1 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 4 |
CVC
| Canadian National Railways | 2 |
DH
| Delaware & Hudson | 2 |
DODX
| Department Of Defense | 1 |
DWC
| Canadian National Railways | 2 |
GTRA
| Golden Triangle Railroad | 1 |
GVSR
| Galveston Railroad L.P. | 3 |
HS
| H and S Railroad Company | 1 |
KCS
| Kansas City Southern | 1 |
KELX
| Kellogg Company | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MDR
| Kansas City Southern | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 2 |
MNJ
| Middletown & New Jersey Railroad | 1 |
MPA
| Maryland and Pennsylvania Railroad | 2 |
MRL
| Montana Rail Link | 1 |
MTW
| Marinette Tomahawk & Western | 1 |
NAR
| Northern Alberta Railways | 1 |
NOKL
| Northwestern Oklahoma | 1 |
OKKT
| Union Pacific Railroad Company | 1 |
PC
| Penn Central | 1 |
QC
| Quebec Central | 3 |
RBOX
| Railbox Company | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SBD
| Seaboard System | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SP
| Southern Pacific | 2 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 2 |
STE
| Stockton Terminal and Eastern RR | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TSE
| Texas South-Eastern Railroad Company | 1 |
UP
| Union Pacific Railroad Company | 2 |
USLX
| General Electric Rail Services | 1 |
VCY
| Galveston Railroad, L.P. | 1 |
VTR
| Vermont Railway | 1 |
WC
| Wisconsin Central | 1 |