AGR
| Alabama and Gulf Coast | 1 |
ATW
| Atlantic and Western | 2 |
BAR
| Bangor & Aroostook | 1 |
BNSF
| BNSF Railway | 2 |
BOMX
| B&O Railroad Museum Inc. | 1 |
CHV
| Chattahoochee Valley Ry | 1 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CMHX
| CarMath Incorporated | 1 |
CNIS
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
FXE
| Ferromex | 1 |
GBW
| Green Bay & Western | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 3 |
GTRA
| Golden Triangle Railroad | 4 |
GTW
| Grand Trunk Western | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 1 |
LN
| Louisville & Nashville | 1 |
MB
| Meridian & Bigbee | 2 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MEC
| Maine Central | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 1 |
MRS
| Manufacturers Railway | 1 |
MSE
| Mississippi Export Railroad Company | 2 |
NADX
| General Electric Rail Services | 6 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 2 |
OAR
| Old Augusta Railroad | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
SBD
| Seaboard System | 1 |
SIND
| Southern Indiana Railway Incorporated | 1 |
SOU
| Southern | 14 |
STMA
| St. Maries River Railroad Company | 1 |
WHCX
| Western Hay Company | 1 |