AARX
| Association of American Railroads | 1 |
AGR
| Alabama and Gulf Coast | 2 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
BAEX
| Andersons | 1 |
BAR
| Bangor & Aroostook | 3 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 3 |
CIC
| Cedar Rapids & Iowa City | 1 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 7 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 3 |
CP
| Canadian Pacific Railway | 2 |
CPAA
| Canadian Pacific Railway | 2 |
CR
| Conrail | 3 |
CRLE
| Coe Rail Incorporated | 5 |
CSX
| CSX Railroad | 7 |
DTI
| Detroit Toledo & Ironton | 1 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
DWC
| Canadian National Railways | 6 |
DWCR
| DWCR | 2 |
EEC
| East Erie Commercial Railroad | 1 |
FXE
| Ferromex | 3 |
GMRC
| Green Mountain RR | 1 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 3 |
GVSR
| Galveston Railroad L.P. | 1 |
HATX
| Helm Financial Corporation | 2 |
HCSX
| Helm Chesapeake LLP | 2 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 6 |
IC
| Illinois Central | 5 |
ICG
| Illinois Central Gulf | 15 |
KCS
| Kansas City Southern | 4 |
LW
| Louisville and Wadley Railway Company | 2 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MDR
| Kansas City Southern | 1 |
MEC
| Maine Central | 6 |
MILW
| Milwaukee Road | 4 |
MMA
| Montreal, Maine & Atlantic | 2 |
MP
| Missouri Pacific | 15 |
NAR
| Northern Alberta Railways | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 5 |
OAR
| Old Augusta Railroad | 1 |
ONT
| Ontario Northland Railway | 2 |
PAL
| Paducah & Louisville | 1 |
PC
| Penn Central | 4 |
PLE
| Pittsburgh & Lake Erie | 2 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 2 |
SLR
| St Lawrence & Atlantic | 2 |
SOU
| Southern | 5 |
SP
| Southern Pacific | 6 |
SRN
| Sabine River & Northern | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 4 |
TASD
| Terminal Alabama State Docks | 4 |
TBOX
| TTX Company | 6 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 3 |
UPP
| Union Pacific Passenger | 3 |
WC
| Wisconsin Central | 7 |
WCCL
| Wisconsin Central | 4 |
WLO
| Waterloo Railway Company (Illinois Central) | 6 |
WP
| Western Pacific | 4 |
WSOR
| Wisconsin & Southern | 4 |