ARR
| Alaska Railroad | 3 |
BM
| Boston & Maine | 2 |
BML
| Belfast & Mooshead Lake | 3 |
BN
| Burlington Northern | 6 |
CN
| Canadian National Railways | 2 |
CR
| Conrail | 2 |
GMRC
| Green Mountain RR | 1 |
MEC
| Maine Central | 2 |
PGE
| Pacific Great Eastern | 4 |
SRC
| Strasburg Railroad | 1 |
WPYR
| White Pass & Yukon Route | 1 |