AOK
| Arkansas-Oklahoma Railroad | 48 |
ATW
| Atlantic and Western | 128 |
BCOL
| Canadian National Railways | 80 |
BNSF
| BNSF Railway | 3 |
CBRY
| Copper Basin Railway | 18 |
CEFX
| CIT Group/Capital Finance, Inc | 2 |
CN
| Canadian National Railways | 135 |
CNA
| Canadian National Railways | 34 |
CNIS
| Canadian National Railways | 15 |
COER
| Crab Orchard & Egyptian | 61 |
DWC
| Canadian National Railways | 70 |
GAEX
| General American Marks Company | 11 |
GNRR
| Georgia Northeastern | 21 |
GRYR
| Grenada Railway | 2 |
GTW
| Grand Trunk Western | 94 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 17 |
KCS
| Kansas City Southern | 2 |
LRS
| Laurinburg and Southern | 4 |
MSRC
| Kansas City Southern | 2 |
NCKR
| NCKR | 1 |
NDYX
| First Union Rail | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 9 |
NOKL
| Northwestern Oklahoma | 84 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 12 |
OFOX
| RESIDCO | 1 |
ONT
| Ontario Northland Railway | 5 |
RVPR
| Riverport R.R., L.L.C. | 12 |
RVRP
| RVRP | 1 |
SMW
| St Marys Railway West LLC | 60 |
SOO
| Soo Line | 1 |
SWM
| SWM | 1 |
TR
| Tomahawk Railway L.P. | 3 |
TTZX
| TTX Company-Centerbeam Flats | 64 |
UCIR
| Union County Industrial Railroad | 48 |
UCRY
| Utah Central | 54 |
UP
| Union Pacific Railroad Company | 6 |
WC
| Wisconsin Central | 98 |
WRWK
| Providence & Worchester Railroad | 57 |
ZEKX
| ZEKX | 1 |