AA
| Ann Arbor | 1 |
ARR
| Alaska Railroad | 9 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BAR
| Bangor & Aroostook | 1 |
BB
| Buckingham Branch | 2 |
BM
| Boston & Maine | 1 |
BML
| Belfast & Mooshead Lake | 1 |
BN
| Burlington Northern | 4 |
BO
| Baltimore & Ohio | 7 |
CC
| Chicago Central & Pacific | 1 |
CN
| Canadian National Railways | 2 |
CNJ
| Central Rail Road of New Jersey | 1 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 10 |
CSRX
| Conway Scenic Railroad | 2 |
CSX
| CSX Railroad | 1 |
DH
| Delaware & Hudson | 7 |
DL
| Delaware-Lackawanna Railroad Company | 1 |
DLW
| Delaware Lackawanna & Western | 1 |
DRI
| Davenport Rock Island and North Western | 1 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
EL
| Erie Lackawanna | 4 |
LI
| Long Island Rail Road Company | 1 |
LNE
| Lehigh and New England Ry | 1 |
LV
| Lehigh Valley | 3 |
MEC
| Maine Central | 9 |
MNCW
| Metro-North Commuter Railroad | 1 |
MRL
| Montana Rail Link | 2 |
NKP
| Nickel Plate | 1 |
NS
| Norfolk Southern | 15 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 1 |
NYOW
| New York, Ontario & Western | 1 |
PRR
| Pennsylvania Railroad | 6 |
RGEX
| Royal Gorge Industries LLC | 1 |
SOO
| Soo Line | 2 |
SRC
| Strasburg Railroad | 1 |
UP
| Union Pacific Railroad Company | 5 |