ACL
| Atlantic Coast Line | 1 |
AMTK
| Amtrak | 1 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 15 |
CR
| Conrail | 11 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 11 |
MPCX
| Michels Corporation | 1 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 9 |
PC
| Penn Central | 2 |
SBD
| Seaboard System | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 1 |
THB
| Toronto Hamilton & Buffalo | 1 |
UP
| Union Pacific Railroad Company | 4 |