ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
ATW
| Atlantic and Western | 1 |
CACY
| CACY | 1 |
CBQ
| Chicago Burlington & Quincy | 2 |
CIL
| Chicago Indianapolis & Louisville (Monon | 1 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CR
| Conrail | 2 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 1 |
GMRC
| Green Mountain RR | 1 |
HS
| H and S Railroad Company | 2 |
IATR
| Iowa Traction Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
INRD
| Indiana Railroad | 2 |
IPFX
| HERITAGE RAIL LEASING LLC | 1 |
KCS
| Kansas City Southern | 2 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MEC
| Maine Central | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 1 |
QC
| Quebec Central | 1 |
RBOX
| Railbox Company | 2 |
SOU
| Southern | 1 |
TBOX
| TTX Company | 1 |
TR
| Tomahawk Railway L.P. | 1 |
WAB
| Wabash | 1 |
WC
| Wisconsin Central | 2 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WRWK
| Providence & Worchester Railroad | 1 |
WSOR
| Wisconsin & Southern | 4 |