ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 1 |
BO
| Baltimore & Ohio | 5 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
CV
| Central Vermont | 1 |
EL
| Erie Lackawanna | 4 |
PC
| Penn Central | 2 |
RDG
| Reading Railroad | 1 |
UP
| Union Pacific Railroad Company | 1 |