ATSF
| Atchison Topeka & Santa Fe | 5 |
BNSF
| BNSF Railway | 3 |
CP
| Canadian Pacific Railway | 4 |
CRR
| Clinchfield | 1 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
EL
| Erie Lackawanna | 1 |
MILW
| Milwaukee Road | 1 |
NW
| Norfolk & Western | 1 |
PC
| Penn Central | 1 |
PPCX
| AAPRCO Register Private Cars | 1 |
SOU
| Southern | 1 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 6 |