ARTX
| Artrain | 9 |
BN
| Burlington Northern | 10 |
BO
| Baltimore & Ohio | 3 |
CO
| Chesapeake & Ohio | 4 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 2 |
OHCR
| Ohio Central | 10 |
PRR
| Pennsylvania Railroad | 4 |
SCL
| Seaboard Coast Line | 2 |
SLSF
| Saint Louis-San Francisco | 9 |
SP
| Southern Pacific | 2 |
TRRA
| Terminal RR of St Louis | 2 |