AERC
| Albany and Eastern Railroad Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 6 |
AOX
| AOX | 1 |
ATW
| Atlantic and Western | 3 |
BCOL
| Canadian National Railways | 1 |
BNSF
| BNSF Railway | 7 |
CN
| Canadian National Railways | 4 |
COER
| Crab Orchard & Egyptian | 14 |
CRLE
| Coe Rail Incorporated | 3 |
DWC
| Canadian National Railways | 2 |
FDDM
| Fort Dodge Des Moines & Southern | 32 |
GTW
| Grand Trunk Western | 1 |
HLSC
| Hampton Railway Incorporated | 7 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 1 |
LW
| Louisville and Wadley Railway Company | 7 |
NOKL
| Northwestern Oklahoma | 25 |
ONT
| Ontario Northland Railway | 1 |
SERA
| Sierra Northern Railway | 2 |
SOO
| Soo Line | 8 |
TH
| TH | 1 |
TPI
| TPI | 1 |
TR
| Tomahawk Railway L.P. | 10 |
TTZX
| TTX Company-Centerbeam Flats | 316 |
UCRY
| Utah Central | 3 |
UP
| Union Pacific Railroad Company | 27 |
WC
| Wisconsin Central | 2 |
WCRC
| Washington Central | 4 |
WRWK
| Providence & Worchester Railroad | 1 |