AARX
| Association of American Railroads | 4 |
AC
| Algoma Central | 1 |
ACL
| Atlantic Coast Line | 5 |
ACPA
| ACPA | 2 |
ACWR
| Aberdeen, Carolina & Western | 1 |
AFT
| AMERICAN FREEDOM TRAIN FOUNDATION | 3 |
ALC
| ALC | 6 |
AMTK
| Amtrak | 402 |
ANBX
| Anbel Corporation | 2 |
AOE
| American Orient Express | 2 |
AOEX
| American Orient Express Railway Company | 1 |
ARR
| Alaska Railroad | 2 |
ARTX
| Artrain | 1 |
AT
| Auto Train | 7 |
ATSF
| Atchison Topeka & Santa Fe | 100 |
BAP
| Butte Anaconda & Pacific | 1 |
BAR
| Bangor & Aroostook | 3 |
BCOL
| Canadian National Railways | 7 |
BCPM
| British Columbia Provincial Museum | 13 |
BN
| Burlington Northern | 62 |
BNA
| Burlington Northern Business Cars | 7 |
BNSF
| BNSF Railway | 40 |
BO
| Baltimore & Ohio | 11 |
BSRX
| Branson Scenic | 1 |
CACV
| Cooperstown and Charlotte Valley | 1 |
CBQ
| Chicago Burlington & Quincy | 121 |
CBRW
| Columbia Basin Railroad | 6 |
CDTX
| California DOT | 7 |
CEI
| Chicago & Eastern Illinois | 7 |
CFNR
| California Northern | 1 |
CGW
| Chicago Great Western | 3 |
CLPX
| Boulder Scientific Company | 6 |
CM
| Central Montana Rail Incorporated | 1 |
CN
| Canadian National Railways | 24 |
CNJ
| Central Rail Road of New Jersey | 5 |
CNW
| Chicago & Northwestern | 12 |
CO
| Chesapeake & Ohio | 18 |
COP
| City of Prineville Railway | 6 |
CP
| Canadian Pacific Railway | 13 |
CRDT
| CRDT | 6 |
CRIP
| Chicago Rock Island & Pacific | 10 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 1 |
CS
| Colorado & Southern | 13 |
CSRR
| Conway Scenic | 1 |
CTS
| Cumbres & Toltec Scenic | 10 |
CVSR
| Cuyahoga Valley Scenic RR | 1 |
CWM
| CWM | 2 |
CZRC
| CZRC | 5 |
DH
| Delaware & Hudson | 7 |
DLJX
| DLJX | 2 |
DLMX
| Daylight Locomotives and Machine Works Incorporated | 4 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DRGW
| Denver & Rio Grande Western | 16 |
ERIE
| Erie Railroad | 1 |
FEC
| Florida East Coast | 3 |
FLNX
| R.P. Flynn Incorporated d/b/a Ohio Railway Supply | 2 |
FWD
| Fort Worth & Denver | 5 |
GALT
| GALT | 2 |
GBW
| Green Bay & Western | 2 |
GCRY
| Grand Canyon Railway | 1 |
GHSA
| GHSA | 1 |
GMO
| Gulf Mobile & Ohio | 22 |
GMRC
| Green Mountain RR | 1 |
GN
| Great Northern | 67 |
GS
| Gloster Southern | 2 |
GTW
| Grand Trunk Western | 5 |
GWT
| GWT | 4 |
HLC
| HLC | 1 |
IC
| Illinois Central | 12 |
INRD
| Indiana Railroad | 2 |
IRYM
| Illinois Railway Museum | 12 |
JES
| JES | 2 |
JESX
| James E Strates Shows | 8 |
JTCX
| Juniata Terminal | 1 |
KCS
| Kansas City Southern | 2 |
KRSX
| Kurguz Enterprises, Inc. | 2 |
LC
| Lancaster & Chester | 3 |
LIRR
| Long Island Railroad | 10 |
LN
| Louisville & Nashville | 12 |
LNO
| Laona and Northern Rwy | 1 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
LSTX
| LSTX | 1 |
MALX
| Mid-America Locomotive and Car Repair Incorporated | 1 |
METX
| METRA | 1 |
MH
| Mount Hood Railroad | 30 |
MHM
| MHM | 1 |
MILW
| Milwaukee Road | 32 |
MKT
| Missouri-Kansas-Texas | 7 |
MP
| Missouri Pacific | 3 |
MRLX
| Mid America Rail Car Leasing | 3 |
MRSR
| Mount Rainier Scenic | 23 |
MRYM
| Monticello Railway Museum | 1 |
MSV
| Mississippi and Skuna Valley Railroad Co | 1 |
MTM
| MTM | 5 |
NC
| CSX Transportation Incorporated | 2 |
NCSL
| Nashville Chattanooga & St Louis | 4 |
NDEM
| NDEM | 1 |
NGRX
| NGRX | 2 |
NH
| New Haven | 2 |
NIRC
| NIRC | 1 |
NJT
| New Jersey Transit | 1 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 29 |
NRHX
| National Railway Historical Society | 1 |
NRM
| NRM | 5 |
NS
| Norfolk Southern | 2 |
NSRX
| Railroading Heritage Of Midwest America | 2 |
NW
| Norfolk & Western | 13 |
NYC
| New York Central | 22 |
NYSW
| New York Susquehanna & Western | 2 |
OE
| Oregon Electric | 6 |
OMD
| OMD | 9 |
ONR
| ONR | 2 |
ONT
| Ontario Northland Railway | 3 |
OPE
| Oregon Pacific & Eastern | 8 |
OSL
| OSL | 6 |
PAL
| Paducah & Louisville | 1 |
PAPX
| Pennsylvania Pullmans Incorporated | 2 |
PAR
| PAR | 1 |
PAXX
| PAXX | 2 |
PC
| Penn Central | 8 |
PLE
| Pittsburgh & Lake Erie | 4 |
PLLX
| Plymouth And Lincoln Railroad Corp | 3 |
PM
| Pere Marquette | 1 |
PNWC
| PNWC | 4 |
POTB
| Port of Tillamook Bay | 1 |
PPCX
| AAPRCO Register Private Cars | 143 |
PRPX
| Pacific Railroad Preservation Assoc | 2 |
PRR
| Pennsylvania Railroad | 68 |
PULL
| Pullman | 547 |
PW
| Providence and Worcester | 7 |
RBBX
| Ringling Bros. and Barnum and Bailey | 3 |
RBMN
| Reading Blue Mountain & Northern | 6 |
RBX
| Ringling Bros. and Barnum and Bailey | 1 |
RDG
| Reading Railroad | 3 |
RFP
| Richmond Fredericksburg & Potomac | 2 |
RNCX
| North Carolina Dept Of Transportation | 2 |
RNRH
| RNRH | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 40 |
RTA
| Regional Transportation Authority | 1 |
RVIX
| Rail Ventures Inc | 4 |
SAL
| Seaboard Air Line | 10 |
SCD
| SCD | 3 |
SCL
| Seaboard Coast Line | 18 |
SEMT
| SEMT | 1 |
SLRG
| San Luis and Rio Grande Railroad | 69 |
SLSF
| Saint Louis-San Francisco | 6 |
SNCT
| Seattle & North Coast R.R. Co. | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 16 |
SP
| Southern Pacific | 51 |
SPS
| Spokane Portland & Seattle | 15 |
SRC
| Strasburg Railroad | 2 |
SW
| Southwestern Railroad Company | 3 |
TCRX
| Tennessee Central Railway Musem | 1 |
TNO
| Texas & New Orleans | 3 |
TRMS
| TRMS | 1 |
UP
| Union Pacific Railroad Company | 127 |
UPP
| Union Pacific Passenger | 12 |
VIA
| Via Rail Canada | 15 |
VMTX
| VMTX | 1 |
VT
| Virginia & Truckee | 1 |
WAB
| Wabash | 1 |
WCRC
| Washington Central | 2 |
WGNS
| Wisconsin Great Northern Railroad Inc | 1 |
WICT
| Wisconsin & Calumet | 2 |
WP
| Western Pacific | 6 |
WPMW
| Union Pacific Railroad Company | 1 |
WPRX
| WPRX | 4 |
WPYR
| White Pass & Yukon Route | 1 |
WRHX
| Creative Charters Inc | 3 |
WSOR
| Wisconsin & Southern | 2 |
WTMC
| WTMC | 2 |