ARZC
| Arizona and California Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BNSF
| BNSF Railway | 9 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
GCRY
| Grand Canyon Railway | 1 |
PPCX
| AAPRCO Register Private Cars | 1 |
SP
| Southern Pacific | 5 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 5 |