AOK
| Arkansas-Oklahoma Railroad | 66 |
ATW
| Atlantic and Western | 64 |
BCOL
| Canadian National Railways | 38 |
BNSF
| BNSF Railway | 2 |
BR
| Buffalo and Pittsburgh | 8 |
CBRY
| Copper Basin Railway | 6 |
CN
| Canadian National Railways | 66 |
CNIS
| Canadian National Railways | 4 |
COER
| Crab Orchard & Egyptian | 11 |
CSX
| CSX Railroad | 2 |
DWC
| Canadian National Railways | 47 |
FDDM
| Fort Dodge Des Moines & Southern | 2 |
GACX
| General American Marks Company | 2 |
GAEX
| General American Marks Company | 1 |
GNRR
| Georgia Northeastern | 2 |
GTW
| Grand Trunk Western | 22 |
IANR
| Iowa Northern Ry | 45 |
IC
| Illinois Central | 14 |
LRS
| Laurinburg and Southern | 22 |
LSTX
| LSTX | 2 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 5 |
NOKL
| Northwestern Oklahoma | 69 |
RVPR
| Riverport R.R., L.L.C. | 5 |
SMW
| St Marys Railway West LLC | 20 |
SOO
| Soo Line | 8 |
TTZX
| TTX Company-Centerbeam Flats | 67 |
UCIR
| Union County Industrial Railroad | 3 |
UCRY
| Utah Central | 20 |
WC
| Wisconsin Central | 58 |
WRWK
| Providence & Worchester Railroad | 32 |