AMTK
| Amtrak | 11 |
ARR
| Alaska Railroad | 1 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 1 |
CS
| Colorado & Southern | 1 |
IC
| Illinois Central | 1 |
MILW
| Milwaukee Road | 1 |
NP
| Northern Pacific | 1 |
RETX
| RETX | 1 |
RUT
| Vermont Railway Incorporated | 1 |
SOU
| Southern | 4 |
TCRX
| Tennessee Central Railway Musem | 1 |
TVRM
| Tennessee Valley | 1 |
UP
| Union Pacific Railroad Company | 2 |
W
| W | 1 |