AGR
| Alabama and Gulf Coast | 1 |
BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 7 |
DME
| Dakota, Minnesota and Eastern | 25 |
DRGW
| Denver & Rio Grande Western | 1 |
HS
| H and S Railroad Company | 2 |
ICE
| Iowa Chicago and Eastern | 1 |
MEC
| Maine Central | 2 |
NSHR
| North Shore | 1 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 2 |
WC
| Wisconsin Central | 1 |
WCCL
| Wisconsin Central | 1 |
WTRM
| Warren and Trumbull Railroad Company | 1 |