AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 1 |
CIC
| Cedar Rapids & Iowa City | 6 |
CN
| Canadian National Railways | 4 |
CNA
| Canadian National Railways | 4 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 20 |
CV
| Central Vermont | 1 |
DWC
| Canadian National Railways | 3 |
FBOX
| TTX Company | 8 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 2 |
ONT
| Ontario Northland Railway | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TR
| Tomahawk Railway L.P. | 1 |
WC
| Wisconsin Central | 12 |
WFRX
| WELLS FARGO RAIL CORPORATION | 2 |
YKR
| York Rail | 1 |