AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 10 |
BNSF
| BNSF Railway | 9 |
CP
| Canadian Pacific Railway | 1 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 7 |
FLOX
| CIT Group/Capital Finance, Inc | 3 |
HS
| H and S Railroad Company | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 3 |
MP
| Missouri Pacific | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 9 |
NS
| Norfolk Southern | 10 |
NW
| Norfolk & Western | 1 |
RRLX
| Rail Logistics, LC | 1 |
TBOX
| TTX Company | 145 |
TR
| Tomahawk Railway L.P. | 9 |
UP
| Union Pacific Railroad Company | 2 |