ABS
| Alabama Southern Railroad | 1 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 4 |
CN
| Canadian National Railways | 1 |
ICG
| Illinois Central Gulf | 1 |
LMIC
| Lake Michigan & Indiana Railroad | 2 |
NS
| Norfolk Southern | 1 |
PMRX
| Progress Metal Reclamation Company | 1 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TFM
| Kansas City Southern De Mexico | 1 |
TTPX
| TTX Company - Bulkhead Flats | 8 |
UP
| Union Pacific Railroad Company | 1 |