ABOX
| TTX Company | 1 |
AGR
| Alabama and Gulf Coast | 3 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 4 |
BNSF
| BNSF Railway | 2 |
CAGY
| Columbus & Greenville Railway | 1 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 4 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 57 |
CVC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 13 |
FBOX
| TTX Company | 10 |
GFRR
| Georgia and Florida Railnet | 2 |
GMRC
| Green Mountain RR | 1 |
GTW
| Grand Trunk Western | 1 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MB
| Meridian & Bigbee | 4 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 2 |
MRL
| Montana Rail Link | 1 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 8 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 1 |
RBOX
| Railbox Company | 13 |
SIRX
| Southern Illinois Railcar Company | 1 |
SOU
| Southern | 9 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 1 |
TR
| Tomahawk Railway L.P. | 2 |
UP
| Union Pacific Railroad Company | 1 |
VR
| Valdosta Railway | 1 |
WC
| Wisconsin Central | 4 |
WCCL
| Wisconsin Central | 2 |
WP
| Western Pacific | 1 |
YKR
| York Rail | 2 |