BOMX
| B&O Railroad Museum Inc. | 1 |
CBQ
| Chicago Burlington & Quincy | 2 |
DM
| Detroit & Mackinac | 2 |
FXE
| Ferromex | 1 |
GCRY
| Grand Canyon Railway | 1 |
MEC
| Maine Central | 1 |
MSTX
| MSTX | 1 |
PPCX
| AAPRCO Register Private Cars | 2 |
PRR
| Pennsylvania Railroad | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 3 |