AA
| Ann Arbor | 8 |
AMTK
| Amtrak | 3 |
ARR
| Alaska Railroad | 47 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
BCH
| Southern Railway of British Columbia Limited | 8 |
BCOL
| Canadian National Railways | 3 |
BN
| Burlington Northern | 184 |
BNSF
| BNSF Railway | 15 |
BO
| Baltimore & Ohio | 3 |
BRC
| Belt Railway of Chicago | 6 |
CIM
| Chicago And Illinois Midland | 2 |
CMER
| CMER | 1 |
CN
| Canadian National Railways | 6 |
CNW
| Chicago & Northwestern | 10 |
CO
| Chesapeake & Ohio | 5 |
COP
| City of Prineville Railway | 5 |
CP
| Canadian Pacific Railway | 9 |
CR
| Conrail | 17 |
CRIP
| Chicago Rock Island & Pacific | 2 |
CS
| Colorado & Southern | 1 |
CSL
| Chicago Short Line Railway Company | 2 |
CSS
| Chicago South Shore And South Bend | 9 |
CSX
| CSX Railroad | 7 |
CWP
| Chicago West Pullman & Southern | 1 |
CWW
| CWW | 3 |
CWWR
| Chehalis Western | 7 |
DMIR
| Duluth Missabe & Iron Range | 1 |
DODX
| Department Of Defense | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
DRI
| Davenport Rock Island and North Western | 1 |
DTI
| Detroit Toledo & Ironton | 3 |
EIRR
| Eastern Idaho Railroad Incorporated | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
EL
| Erie Lackawanna | 1 |
ERIE
| Erie Railroad | 1 |
FWD
| Fort Worth & Denver | 6 |
GBW
| Green Bay & Western | 3 |
GMO
| Gulf Mobile & Ohio | 3 |
GN
| Great Northern | 20 |
GTW
| Grand Trunk Western | 9 |
IAIS
| Iowa Interstate | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 3 |
IHB
| Indiana Harbor Belt | 38 |
KCS
| Kansas City Southern | 2 |
LN
| Louisville & Nashville | 4 |
LPRX
| LPRX | 2 |
LV
| Lehigh Valley | 1 |
MCR
| McCloud Railway Company | 4 |
MILW
| Milwaukee Road | 85 |
MKT
| Missouri-Kansas-Texas | 2 |
MNS
| Minneapolis Northfield & Southern | 3 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 35 |
MRL
| Montana Rail Link | 8 |
MRSR
| Mount Rainier Scenic | 2 |
NCRY
| Northern Central Railway | 1 |
NP
| Northern Pacific | 5 |
NPRX
| Yakima Interurban Lines Assn. | 5 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 2 |
OSL
| OSL | 1 |
PC
| Penn Central | 10 |
PM
| Pere Marquette | 1 |
POVA
| Pend Oreille Valley Railroad | 2 |
PPU
| Tazewell & Peoria Railroad | 1 |
PRR
| Pennsylvania Railroad | 2 |
RI
| RI | 3 |
SBD
| Seaboard System | 3 |
SCL
| Seaboard Coast Line | 1 |
SI
| Union Pacific Railroad Company (Spokane International) | 11 |
SIRR
| Southern Industrial Railroad | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SNCT
| Seattle & North Coast R.R. Co. | 1 |
SOO
| Soo Line | 12 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 32 |
SPS
| Spokane Portland & Seattle | 6 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
SVRY
| SVRY | 3 |
TMBL
| Tacoma Municipal Belt Line Railway | 8 |
TPW
| Toledo Peoria & Western | 1 |
TRC
| Trona Railway Company | 1 |
TRRA
| Terminal RR of St Louis | 2 |
TTAX
| TTX Company - Spine Cars | 1 |
UP
| Union Pacific Railroad Company | 66 |
USA
| USA | 1 |
WAB
| Wabash | 3 |
WC
| Wisconsin Central | 2 |
WCRC
| Washington Central | 3 |
WIM
| WIM | 1 |
WP
| Western Pacific | 9 |
WPRR
| Willamette and Pacific | 6 |
WTCX
| Weyerhauser | 1 |
WURR
| WURR | 5 |
YS
| Youngstown Southern Ry | 1 |