BNSF
| BNSF Railway | 1 |
LRS
| Laurinburg and Southern | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NOKL
| Northwestern Oklahoma | 1 |
RBOX
| Railbox Company | 4 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 4 |
UP
| Union Pacific Railroad Company | 3 |
WRWK
| Providence & Worchester Railroad | 1 |