AA
| Ann Arbor | 10 |
ACL
| Atlantic Coast Line | 1 |
ALS
| Alton & Southern Railway | 2 |
ATSF
| Atchison Topeka & Santa Fe | 8 |
BAR
| Bangor & Aroostook | 1 |
BAWX
| Babcox & Wilcox | 1 |
BLE
| Bessemer & Lake Erie | 13 |
BMRG
| Blue Mountain & Reading | 1 |
BN
| Burlington Northern | 19 |
BO
| Baltimore & Ohio | 60 |
CAGY
| Columbus & Greenville Railway | 1 |
CBQ
| Chicago Burlington & Quincy | 8 |
CC
| Chicago Central & Pacific | 1 |
CHRX
| The Chesapeake Division | 1 |
CI
| Cambria and Indiana Railroad Company | 2 |
CIL
| Chicago Indianapolis & Louisville (Monon | 2 |
CIM
| Chicago And Illinois Midland | 1 |
CMRR
| Catskill Mountain Scenic | 3 |
CMRY
| CMRY | 2 |
CN
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 12 |
CP
| Canadian Pacific Railway | 2 |
CPMY
| Coopersville & Marne Railway | 3 |
CR
| Conrail | 19 |
CRR
| Clinchfield | 5 |
CSL
| Chicago Short Line Railway Company | 2 |
CSS
| Chicago South Shore And South Bend | 10 |
CSX
| CSX Railroad | 26 |
CTS
| Cumbres & Toltec Scenic | 1 |
CV
| Central Vermont | 3 |
CWC
| Charleston & Western Carolina | 1 |
DH
| Delaware & Hudson | 1 |
DIR
| DIR | 2 |
DL
| Delaware-Lackawanna Railroad Company | 1 |
DLW
| Delaware Lackawanna & Western | 1 |
DMIR
| Duluth Missabe & Iron Range | 4 |
DRGW
| Denver & Rio Grande Western | 2 |
DTI
| Detroit Toledo & Ironton | 3 |
DWP
| Duluth Winnipeg & Pacific | 5 |
EJE
| Elgin Joliet and Eastern | 30 |
EL
| Erie Lackawanna | 5 |
ERIE
| Erie Railroad | 7 |
EV
| Everett Railroad | 1 |
FGLK
| Finger Lakes Railway | 1 |
FLWB
| FLWB | 1 |
FWCR
| Florida West Coast Railroad Incorporated | 1 |
GA
| Georgia Railroad | 1 |
GANO
| Georgia Northern Railway Company | 1 |
GMO
| Gulf Mobile & Ohio | 1 |
GN
| Great Northern | 2 |
GSMR
| Great Smoky Mountains | 4 |
GTW
| Grand Trunk Western | 5 |
HVSR
| Hocking Valley Scenic | 1 |
IANR
| Iowa Northern Ry | 2 |
IC
| Illinois Central | 14 |
ICG
| Illinois Central Gulf | 42 |
IHB
| Indiana Harbor Belt | 50 |
IMRR
| Illinois Midland Railroad | 11 |
INRD
| Indiana Railroad | 1 |
IRM
| Indiana Railroad Museum | 1 |
KCS
| Kansas City Southern | 7 |
LHR
| Lehigh & Hudson River | 1 |
LI
| Long Island Rail Road Company | 1 |
LIRR
| Long Island Railroad | 1 |
LN
| Louisville & Nashville | 1 |
LV
| Lehigh Valley | 1 |
MILW
| Milwaukee Road | 4 |
MKT
| Missouri-Kansas-Texas | 5 |
MO
| MO | 1 |
MON
| Monon Route | 8 |
MP
| Missouri Pacific | 29 |
NKP
| Nickel Plate | 25 |
NP
| Northern Pacific | 15 |
NS
| Norfolk Southern | 8 |
NW
| Norfolk & Western | 32 |
NYC
| New York Central | 5 |
NYSW
| New York Susquehanna & Western | 2 |
OTVR
| Otter Tail Valley Railroad Company | 5 |
PC
| Penn Central | 2 |
PLE
| Pittsburgh & Lake Erie | 1 |
PM
| Pere Marquette | 4 |
PRR
| Pennsylvania Railroad | 14 |
PS
| Pittsburg and Shawmut Railroad Company | 1 |
PWV
| Pittsburgh & West Virginia | 7 |
RDG
| Reading Railroad | 6 |
SBD
| Seaboard System | 5 |
SCIH
| South Chicago & Indiana Harbor Railway C | 3 |
SCL
| Seaboard Coast Line | 13 |
SFS
| Santa Fe Southern | 4 |
SLIM
| St Louis, Iron Mountain & Southern | 2 |
SLSF
| Saint Louis-San Francisco | 7 |
SOO
| Soo Line | 4 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 1 |
SPS
| Spokane Portland & Seattle | 2 |
THB
| Toronto Hamilton & Buffalo | 1 |
TRRA
| Terminal RR of St Louis | 2 |
UP
| Union Pacific Railroad Company | 5 |
URR
| Union Railroad | 1 |
WAB
| Wabash | 13 |
WC
| Wisconsin Central | 1 |
WECX
| Westinghouse Electric Corporation | 2 |
WM
| Western Maryland | 6 |
WPYR
| White Pass & Yukon Route | 1 |
WSS
| Winston-Salem Southbound Railway Company | 1 |
YN
| Youngstown and Northern | 1 |