ALAB
| Alabama Railroad | 6 |
CR
| Conrail | 56 |
GMSR
| Kansas City Southern | 1 |
IBT
| International Bridge and Terminal Company | 1 |
KCS
| Kansas City Southern | 3 |
MP
| Missouri Pacific | 8 |
MSRC
| Kansas City Southern | 1 |
MWCX
| Midwest Railcar Corporation | 2 |
NS
| Norfolk Southern | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |