ARR
| Alaska Railroad | 2 |
ARZC
| Arizona and California Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 4 |
BNA
| Burlington Northern Business Cars | 5 |
BNSF
| BNSF Railway | 28 |
CN
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
DOTX
| USDOT/Federal Railroad Administration | 6 |
GBW
| Green Bay & Western | 2 |
GCRY
| Grand Canyon Railway | 2 |
GTP
| Grand Trunk Pacific | 1 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 2 |
NW
| Norfolk & Western | 1 |
NXGX
| NXGX | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SP
| Southern Pacific | 1 |
SPS
| Spokane Portland & Seattle | 1 |
UP
| Union Pacific Railroad Company | 4 |