ACL
| Atlantic Coast Line | 4 |
ARR
| Alaska Railroad | 4 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
CASS
| Cass Scenic | 1 |
CN
| Canadian National Railways | 1 |
CO
| Chesapeake & Ohio | 6 |
CP
| Canadian Pacific Railway | 4 |
DAFX
| Department of Defence Troop Support and Aviation Material Re | 2 |
DH
| Delaware & Hudson | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
FDEL
| FDEL | 1 |
GSMR
| Great Smoky Mountains | 1 |
LI
| Long Island Rail Road Company | 4 |
NYC
| New York Central | 1 |
ONT
| Ontario Northland Railway | 1 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RDG
| Reading Railroad | 1 |
SBD
| Seaboard System | 3 |
SPCC
| Southern Peru Copper Corp | 1 |
UP
| Union Pacific Railroad Company | 7 |
WP
| Western Pacific | 1 |
WPYR
| White Pass & Yukon Route | 1 |
WWRC
| Wilmington and Western Railroad | 1 |