AMTK
| Amtrak | 2 |
BM
| Boston & Maine | 1 |
CSRX
| Conway Scenic Railroad | 1 |
CSX
| CSX Railroad | 6 |
MBTA
| Massachusetts Bay Transit Authority | 3 |
NS
| Norfolk Southern | 2 |
PPCX
| AAPRCO Register Private Cars | 18 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
ST
| Springfield Terminal | 6 |