CAGY
| Columbus & Greenville Railway | 3 |
CBQ
| Chicago Burlington & Quincy | 1 |
MARC
| Maryland Transit Administration | 1 |
NS
| Norfolk Southern | 2 |
PPCX
| AAPRCO Register Private Cars | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SOU
| Southern | 1 |