ACFX
| General Electric Rail Services | 1 |
CR
| Conrail | 8 |
CSX
| CSX Railroad | 12 |
GACX
| General American Marks Company | 1 |
GATX
| General American Marks Company | 1 |
RFMX
| Caldwell-Baker Company | 1 |
SIRX
| Southern Illinois Railcar Company | 1 |
SOO
| Soo Line | 1 |
UNPX
| Procor Limited | 2 |