AGR
| Alabama and Gulf Coast | 2 |
ATW
| Atlantic and Western | 3 |
BN
| Burlington Northern | 1 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 1 |
EEC
| East Erie Commercial Railroad | 8 |
FGLK
| Finger Lakes Railway | 1 |
FXE
| Ferromex | 1 |
GMRC
| Green Mountain RR | 2 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 4 |
GTW
| Grand Trunk Western | 2 |
HATX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 13 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 1 |
ITLX
| General Electric Rail Services | 1 |
KCS
| Kansas City Southern | 1 |
LRWN
| Little Rock & Western | 1 |
MEC
| Maine Central | 5 |
MET
| Modesto and Empire Traction Company | 1 |
MHWA
| Mohawk Adirondack and Northern Railroad | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 1 |
MSRC
| Kansas City Southern | 1 |
NS
| Norfolk Southern | 1 |
NYC
| New York Central | 1 |
NYSW
| New York Susquehanna & Western | 1 |
ONT
| Ontario Northland Railway | 1 |
PC
| Penn Central | 1 |
PHD
| Port Huron and Detroit Railroad Company | 1 |
PREX
| Pioneer Rail Equipment | 1 |
RBOX
| Railbox Company | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 1 |
WP
| Western Pacific | 2 |
WSOR
| Wisconsin & Southern | 1 |
YARR
| Youngstown and Austintown Railroad | 1 |