ACL
| Atlantic Coast Line | 1 |
AMTK
| Amtrak | 1 |
AT
| Auto Train | 4 |
BO
| Baltimore & Ohio | 9 |
CG
| Central Of Georgia | 1 |
CO
| Chesapeake & Ohio | 3 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 3 |
IC
| Illinois Central | 2 |
NW
| Norfolk & Western | 2 |
PC
| Penn Central | 11 |
PLE
| Pittsburgh & Lake Erie | 1 |
SCL
| Seaboard Coast Line | 3 |
SOU
| Southern | 5 |
UP
| Union Pacific Railroad Company | 2 |
WM
| Western Maryland | 1 |