ALLN
| Allentown and Auburn Railroad | 2 |
BM
| Boston & Maine | 4 |
CNW
| Chicago & Northwestern | 1 |
CR
| Conrail | 4 |
CSX
| CSX Railroad | 12 |
DODX
| Department Of Defense | 1 |
MEC
| Maine Central | 4 |
MRL
| Montana Rail Link | 2 |
NYC
| New York Central | 5 |
PRL
| Penn Eastern Rail Lines Incorporated | 1 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 1 |
WC
| Wisconsin Central | 1 |