CSX
| CSX Railroad | 1 |
EEC
| East Erie Commercial Railroad | 2 |
FBOX
| TTX Company | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 5 |
RBOX
| Railbox Company | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 8 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TBOX
| TTX Company | 12 |