ADN
| Ashley Drew & Northern | 1 |
AGR
| Alabama and Gulf Coast | 1 |
AOK
| Arkansas-Oklahoma Railroad | 6 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 9 |
CIBX
| CIT Group/Capital Finance, Inc | 1 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 3 |
CSX
| CSX Railroad | 3 |
EEC
| East Erie Commercial Railroad | 2 |
GMRC
| Green Mountain RR | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTRA
| Golden Triangle Railroad | 1 |
HS
| H and S Railroad Company | 1 |
KCS
| Kansas City Southern | 3 |
MRL
| Montana Rail Link | 4 |
MRS
| Manufacturers Railway | 2 |
NERR
| Nashville and Eastern | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 3 |
RBOX
| Railbox Company | 5 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 9 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 4 |
TR
| Tomahawk Railway L.P. | 2 |
WC
| Wisconsin Central | 1 |
WCCL
| Wisconsin Central | 1 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 1 |
WSOR
| Wisconsin & Southern | 3 |