AOK
| Arkansas-Oklahoma Railroad | 2 |
ATW
| Atlantic and Western | 1 |
BCOL
| Canadian National Railways | 4 |
CAGY
| Columbus & Greenville Railway | 1 |
COER
| Crab Orchard & Egyptian | 3 |
CSX
| CSX Railroad | 2 |
DWC
| Canadian National Railways | 2 |
GACX
| General American Marks Company | 1 |
GAEX
| General American Marks Company | 5 |
GNRR
| Georgia Northeastern | 2 |
LRS
| Laurinburg and Southern | 1 |
NOKL
| Northwestern Oklahoma | 7 |
NS
| Norfolk Southern | 4 |
SMW
| St Marys Railway West LLC | 1 |
SOO
| Soo Line | 4 |
TR
| Tomahawk Railway L.P. | 5 |
TTZX
| TTX Company-Centerbeam Flats | 15 |
UCRY
| Utah Central | 2 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 1 |