ATSF
| Atchison Topeka & Santa Fe | 1 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 1 |
FXE
| Ferromex | 2 |
GTW
| Grand Trunk Western | 1 |
MRL
| Montana Rail Link | 1 |
PRR
| Pennsylvania Railroad | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 2 |
WP
| Western Pacific | 1 |
YKR
| York Rail | 2 |