AERC
| Albany and Eastern Railroad Company | 2 |
AKMD
| Arkansas Midland Railroad Company | 2 |
AOK
| Arkansas-Oklahoma Railroad | 21 |
ATW
| Atlantic and Western | 18 |
BCOL
| Canadian National Railways | 2 |
BNSF
| BNSF Railway | 8 |
CAGY
| Columbus & Greenville Railway | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CN
| Canadian National Railways | 8 |
CNIS
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 6 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 2 |
DWC
| Canadian National Railways | 3 |
FDDM
| Fort Dodge Des Moines & Southern | 2 |
FURX
| First Union Rail | 1 |
GAEX
| General American Marks Company | 1 |
GNRR
| Georgia Northeastern | 4 |
GTW
| Grand Trunk Western | 1 |
HLSC
| Hampton Railway Incorporated | 6 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 3 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LRS
| Laurinburg and Southern | 9 |
LW
| Louisville and Wadley Railway Company | 1 |
NOKL
| Northwestern Oklahoma | 41 |
NS
| Norfolk Southern | 46 |
ONT
| Ontario Northland Railway | 2 |
SERA
| Sierra Northern Railway | 1 |
SMW
| St Marys Railway West LLC | 1 |
SOO
| Soo Line | 14 |
SRY
| Southern Railway of British Columbia Lim | 2 |
TR
| Tomahawk Railway L.P. | 19 |
TTZX
| TTX Company-Centerbeam Flats | 34 |
UCRY
| Utah Central | 1 |
UP
| Union Pacific Railroad Company | 14 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 4 |
YARR
| Youngstown and Austintown Railroad | 2 |