ATW
| Atlantic and Western | 1 |
CCR
| Corinth & Counce | 1 |
CNW
| Chicago & Northwestern | 1 |
CSX
| CSX Railroad | 1 |
MRL
| Montana Rail Link | 1 |
NECR
| New England Central | 1 |
QC
| Quebec Central | 1 |
SIRX
| Southern Illinois Railcar Company | 2 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 1 |