ADN
| Ashley Drew & Northern | 1 |
AGR
| Alabama and Gulf Coast | 1 |
CIC
| Cedar Rapids & Iowa City | 1 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 2 |
DME
| Dakota, Minnesota and Eastern | 1 |
GVSR
| Galveston Railroad L.P. | 1 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NS
| Norfolk Southern | 2 |
PRR
| Pennsylvania Railroad | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 1 |