ATW
| Atlantic and Western | 2 |
BNSF
| BNSF Railway | 2 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 2 |
CN
| Canadian National Railways | 4 |
CNA
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 2 |
COER
| Crab Orchard & Egyptian | 10 |
CSX
| CSX Railroad | 22 |
DWC
| Canadian National Railways | 5 |
FBOX
| TTX Company | 20 |
IATR
| Iowa Traction Railroad Company | 1 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 2 |
LW
| Louisville and Wadley Railway Company | 3 |
NRI
| Nebkota Railway Incorporated | 2 |
NS
| Norfolk Southern | 1 |
ONT
| Ontario Northland Railway | 3 |
SNC
| Saratoga & North Creek Railway | 30 |
TR
| Tomahawk Railway L.P. | 2 |
UCRY
| Utah Central | 8 |
WC
| Wisconsin Central | 1 |
WFRX
| WELLS FARGO RAIL CORPORATION | 1 |
YKR
| York Rail | 3 |