AOK
| Arkansas-Oklahoma Railroad | 13 |
ATW
| Atlantic and Western | 3 |
BCOL
| Canadian National Railways | 10 |
BN
| Burlington Northern | 1 |
CBRY
| Copper Basin Railway | 3 |
CN
| Canadian National Railways | 20 |
CNIS
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 3 |
CRLE
| Coe Rail Incorporated | 1 |
DWC
| Canadian National Railways | 7 |
GAEX
| General American Marks Company | 3 |
GNRR
| Georgia Northeastern | 2 |
GTW
| Grand Trunk Western | 6 |
HLSC
| Hampton Railway Incorporated | 1 |
IC
| Illinois Central | 4 |
LW
| Louisville and Wadley Railway Company | 1 |
MMA
| Montreal, Maine & Atlantic | 2 |
MSRC
| Kansas City Southern | 1 |
NOKL
| Northwestern Oklahoma | 17 |
NS
| Norfolk Southern | 12 |
ONT
| Ontario Northland Railway | 1 |
RVPR
| Riverport R.R., L.L.C. | 1 |
SGLR
| Seminole Gulf | 1 |
SMW
| St Marys Railway West LLC | 1 |
SOO
| Soo Line | 32 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TR
| Tomahawk Railway L.P. | 2 |
TTZX
| TTX Company-Centerbeam Flats | 37 |
UCRY
| Utah Central | 2 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 14 |