ACL
| Atlantic Coast Line | 1 |
ACY
| Akron, Canton & Youngstown | 2 |
ADN
| Ashley Drew & Northern | 1 |
AGR
| Alabama and Gulf Coast | 1 |
AHW
| Fox Valley and Western Limited | 1 |
AKMD
| Arkansas Midland Railroad Company | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
APA
| Apache Railway Company | 1 |
APNC
| Appanoose County Community Railroad | 1 |
AR
| Aberdeen and Rockfish | 2 |
ATLT
| Austin Todd and Ladd Railroad Company | 1 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
BAYL
| Bay Line, LLC | 2 |
BFC
| Bellefonte Central | 1 |
BN
| Burlington Northern | 7 |
BNSF
| BNSF Railway | 2 |
BO
| Baltimore & Ohio | 1 |
CBQ
| Chicago Burlington & Quincy | 5 |
CCCL
| Connecticut Central Railroad Company | 2 |
CCT
| Central California Traction Company | 2 |
CHRX
| The Chesapeake Division | 2 |
CMN
| Chicago, Madison & Northern Railway | 1 |
CN
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 3 |
CO
| Chesapeake & Ohio | 3 |
COP
| City of Prineville Railway | 2 |
CR
| Conrail | 10 |
CRIP
| Chicago Rock Island & Pacific | 2 |
CRSX
| Cost Rail Service | 1 |
CS
| Colorado & Southern | 1 |
CVAR
| Cedar Valley Railroad | 1 |
CW
| Colorado and Wyoming | 1 |
DLW
| Delaware Lackawanna & Western | 1 |
DLWR
| Depew Lancaster and Western Railroad Com | 1 |
DM
| Detroit & Mackinac | 4 |
DRGW
| Denver & Rio Grande Western | 2 |
DSL
| Denver & Salt Lake | 1 |
DSRR
| Delta Southern RR | 1 |
DTS
| Detroit & Toledo ShoreLine | 3 |
EPTC
| East Portland Traction | 1 |
ERIE
| Erie Railroad | 1 |
ERR
| Edaville Railroad Corp | 5 |
EV
| Everett Railroad | 2 |
FCEN
| Florida Central | 1 |
FGLK
| Finger Lakes Railway | 1 |
FWCR
| Florida West Coast Railroad Incorporated | 1 |
GMRC
| Green Mountain RR | 1 |
GNBC
| Grainbelt Corporation | 1 |
GSMR
| Great Smoky Mountains | 3 |
GSWR
| Georgia Southwestern | 1 |
GWR
| Great Western Railway Company | 2 |
HOS
| Hoosier Southern Railroad | 1 |
IC
| Illinois Central | 5 |
ICG
| Illinois Central Gulf | 2 |
INPR
| Idaho Northern and Pacific Railroad | 2 |
JDHX
| JD Heiskell | 1 |
KCT
| Kansas City Terminal | 1 |
KJR
| Kiski Junction Railroad | 1 |
KXHR
| Knoxville & Holston River RR | 1 |
LIRC
| Louisville & Indiana | 1 |
LN
| Louisville & Nashville | 1 |
LV
| Lehigh Valley | 5 |
LVRC
| Lamoille Valley | 1 |
MB
| Meridian & Bigbee | 1 |
MBT
| MBT | 2 |
MCR
| McCloud Railway Company | 1 |
MDDE
| Maryland and Delaware Railroad | 1 |
MH
| Mount Hood Railroad | 1 |
MILW
| Milwaukee Road | 1 |
MJ
| Manufacturers'' Junction Railway Company | 1 |
MNA
| Missouri and Northern Arkansas | 1 |
MNRR
| Modoc Northern Railroad Company | 1 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 9 |
MSN
| Meeker Southern | 1 |
MSTL
| Minneapolis & St Louis | 1 |
NAP
| Narragansett Pier Railroad Company | 1 |
NKP
| Nickel Plate | 4 |
NYC
| New York Central | 2 |
NYLE
| New York and Lake Erie Railroad Company | 2 |
ONW
| Oregon & Northwestern | 1 |
OPE
| Oregon Pacific & Eastern | 1 |
OPR
| Oregon Pacific | 1 |
OSL
| OSL | 1 |
OSR
| Ontario Southland Rwy | 1 |
PC
| Penn Central | 8 |
PLE
| Pittsburgh & Lake Erie | 1 |
PRR
| Pennsylvania Railroad | 3 |
PTM
| Portland Terminal | 3 |
PVRR
| Pioneer Valley Railroad Company Incorporated | 3 |
RAMX
| Rail Merchants International | 2 |
RDG
| Reading Railroad | 3 |
RNCX
| North Carolina Dept Of Transportation | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
RUT
| Vermont Railway Incorporated | 2 |
SAN
| Sandersville | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 3 |
SCTR
| South Central Tennessee | 1 |
SERA
| Sierra Northern Railway | 2 |
SGLR
| Seminole Gulf | 1 |
SJVR
| San Joaquin Valley RR | 1 |
SLC
| San Luis Central Railroad Company | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SM
| St. Marys Railroad | 2 |
SOO
| Soo Line | 1 |
SOU
| Southern | 7 |
TEG
| TEG | 4 |
TMBL
| Tacoma Municipal Belt Line Railway | 2 |
TT
| Toledo Terminal | 4 |
TTI
| Transkentucky Transportation | 2 |
UP
| Union Pacific Railroad Company | 3 |
USAX
| United States Army | 2 |
VCRR
| Ventura County Railroad Company | 2 |
WAB
| Wabash | 1 |
WAG
| Wellsville Addison & Galeton | 1 |
WBCR
| Wabash Central | 1 |
WCLR
| Waccamaw Coastline | 3 |
WM
| Western Maryland | 1 |
WNYP
| Western New York and Pennsylvania | 2 |
WP
| Western Pacific | 1 |
WPRR
| Willamette and Pacific | 2 |
WTCX
| Weyerhauser | 1 |
WVC
| Durbin and Greenbrier Valley Railroad d/ | 4 |