AOK
| Arkansas-Oklahoma Railroad | 6 |
ATW
| Atlantic and Western | 1 |
BKTY
| Union Pacific Railroad Company | 8 |
BNSF
| BNSF Railway | 6 |
CIC
| Cedar Rapids & Iowa City | 1 |
CN
| Canadian National Railways | 145 |
CNA
| Canadian National Railways | 393 |
CNIS
| Canadian National Railways | 58 |
CNW
| Chicago & Northwestern | 8 |
COER
| Crab Orchard & Egyptian | 42 |
CSX
| CSX Railroad | 20 |
CV
| Central Vermont | 4 |
DWC
| Canadian National Railways | 183 |
FBOX
| TTX Company | 62 |
GACX
| General American Marks Company | 1 |
GTW
| Grand Trunk Western | 4 |
HKRX
| HKRX | 5 |
IATR
| Iowa Traction Railroad Company | 2 |
IC
| Illinois Central | 2 |
KLRX
| KOCH RAIL LLC | 2 |
LRS
| Laurinburg and Southern | 1 |
LW
| Louisville and Wadley Railway Company | 6 |
NADX
| General Electric Rail Services | 2 |
NOKL
| Northwestern Oklahoma | 8 |
NRI
| Nebkota Railway Incorporated | 1 |
NS
| Norfolk Southern | 14 |
SNC
| Saratoga & North Creek Railway | 2 |
SOO
| Soo Line | 27 |
SRY
| Southern Railway of British Columbia Lim | 42 |
TIMX
| Trinity Industries Leasing Company | 15 |
TR
| Tomahawk Railway L.P. | 1 |
WC
| Wisconsin Central | 146 |
WFRX
| WELLS FARGO RAIL CORPORATION | 187 |
YKR
| York Rail | 3 |