AOK
| Arkansas-Oklahoma Railroad | 22 |
ATW
| Atlantic and Western | 20 |
BCOL
| Canadian National Railways | 30 |
BNSF
| BNSF Railway | 2 |
BR
| Buffalo and Pittsburgh | 1 |
CBRY
| Copper Basin Railway | 4 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CN
| Canadian National Railways | 41 |
CNA
| Canadian National Railways | 3 |
CNIS
| Canadian National Railways | 4 |
COER
| Crab Orchard & Egyptian | 2 |
CSX
| CSX Railroad | 5 |
DWC
| Canadian National Railways | 29 |
FDDM
| Fort Dodge Des Moines & Southern | 4 |
FURX
| First Union Rail | 2 |
GAEX
| General American Marks Company | 3 |
GNRR
| Georgia Northeastern | 9 |
GTW
| Grand Trunk Western | 8 |
HLSC
| Hampton Railway Incorporated | 4 |
HPTX
| HAMPTON CAPITAL LLC | 1 |
IANR
| Iowa Northern Ry | 10 |
IC
| Illinois Central | 3 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
LRS
| Laurinburg and Southern | 4 |
LW
| Louisville and Wadley Railway Company | 1 |
MEC
| Maine Central | 1 |
MMA
| Montreal, Maine & Atlantic | 5 |
MSRC
| Kansas City Southern | 1 |
NDYX
| First Union Rail | 3 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 7 |
NOKL
| Northwestern Oklahoma | 33 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 3 |
ONT
| Ontario Northland Railway | 1 |
RVPR
| Riverport R.R., L.L.C. | 4 |
SGLR
| Seminole Gulf | 2 |
SMW
| St Marys Railway West LLC | 9 |
SOO
| Soo Line | 7 |
TR
| Tomahawk Railway L.P. | 4 |
TTZX
| TTX Company-Centerbeam Flats | 31 |
UCIR
| Union County Industrial Railroad | 4 |
UCRY
| Utah Central | 4 |
UP
| Union Pacific Railroad Company | 3 |
WC
| Wisconsin Central | 30 |
WCRC
| Washington Central | 3 |
WRWK
| Providence & Worchester Railroad | 14 |