AGR
| Alabama and Gulf Coast | 11 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
ATW
| Atlantic and Western | 1 |
BAYL
| Bay Line, LLC | 1 |
CNW
| Chicago & Northwestern | 1 |
CSX
| CSX Railroad | 1 |
EEC
| East Erie Commercial Railroad | 4 |
GMRC
| Green Mountain RR | 4 |
HS
| H and S Railroad Company | 3 |
KCS
| Kansas City Southern | 1 |
MSDR
| Knoxville & Holston River Railroad | 3 |
PDRR
| Pee Dee River RR | 1 |
SM
| St. Marys Railroad | 1 |