ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 1 |
BNSF
| BNSF Railway | 2 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 1 |
IHB
| Indiana Harbor Belt | 1 |
KCS
| Kansas City Southern | 2 |
LW
| Louisville and Wadley Railway Company | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 3 |
NYC
| New York Central | 1 |
RJCW
| R.J. Corman Railroad Company/ Western Ohio Line | 1 |
SOU
| Southern | 2 |
TFM
| Kansas City Southern De Mexico | 1 |