AA
| Ann Arbor | 2 |
BN
| Burlington Northern | 9 |
BO
| Baltimore & Ohio | 1 |
CBQ
| Chicago Burlington & Quincy | 2 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 94 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 5 |
EJE
| Elgin Joliet and Eastern | 1 |
GN
| Great Northern | 4 |
GTW
| Grand Trunk Western | 1 |
HCR
| HCR | 1 |
IHB
| Indiana Harbor Belt | 2 |
METX
| METRA | 2 |
MILW
| Milwaukee Road | 2 |
MRL
| Montana Rail Link | 2 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 5 |
NYC
| New York Central | 1 |
PRR
| Pennsylvania Railroad | 1 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 1 |