AC
| Algoma Central | 3 |
ACL
| Atlantic Coast Line | 13 |
AM
| Arkansas & Missouri | 5 |
AMTK
| Amtrak | 232 |
AOE
| American Orient Express | 50 |
ARR
| Alaska Railroad | 1 |
ARTX
| Artrain | 1 |
ASML
| Atlanta, Stone Mountain & Lithonia | 1 |
AT
| Auto Train | 9 |
ATAX
| Arizona Transit Assembly | 2 |
ATSF
| Atchison Topeka & Santa Fe | 24 |
BB
| Buckingham Branch | 2 |
BCR
| Bay Coast Railroad | 1 |
BGRM
| Bluegrass Railroad Museum | 1 |
BLRX
| BLRX | 10 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 14 |
BO
| Baltimore & Ohio | 13 |
BOMX
| B&O Railroad Museum Inc. | 2 |
BSRX
| Branson Scenic | 8 |
BSVR
| BSVR | 1 |
CAGY
| Columbus & Greenville Railway | 4 |
CBQ
| Chicago Burlington & Quincy | 14 |
CEI
| Chicago & Eastern Illinois | 1 |
CFRC
| CFRC | 11 |
CG
| Central Of Georgia | 18 |
CMPA
| Madison Railroad Division of City of Mad | 1 |
CN
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 6 |
CO
| Chesapeake & Ohio | 15 |
CP
| Canadian Pacific Railway | 1 |
CPR
| Canadian Pacific Railway | 1 |
CRIP
| Chicago Rock Island & Pacific | 20 |
CRR
| Clinchfield | 2 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 17 |
CS
| Colorado & Southern | 1 |
CSX
| CSX Railroad | 67 |
CTS
| Cumbres & Toltec Scenic | 2 |
CV
| Central Vermont | 2 |
DLJX
| DLJX | 1 |
DLW
| Delaware Lackawanna & Western | 1 |
DRGW
| Denver & Rio Grande Western | 5 |
DSPP
| Denver, South Park & Pacific RR | 2 |
ERIE
| Erie Railroad | 1 |
ESNA
| Eureka Springs and North Arkansas | 3 |
EV
| Everett Railroad | 2 |
FCEN
| Florida Central | 3 |
FEC
| Florida East Coast | 9 |
FICX
| Frontier Industrial Corp | 1 |
GA
| Georgia Railroad | 6 |
GANO
| Georgia Northern Railway Company | 6 |
GLAS
| GLAS | 1 |
GLRX
| Georgetown Loop Railroad Incorporated | 4 |
GMO
| Gulf Mobile & Ohio | 4 |
GN
| Great Northern | 4 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GSMR
| Great Smoky Mountains | 1 |
GSWR
| Georgia Southwestern | 3 |
GTW
| Grand Trunk Western | 2 |
HALX
| Holland American Line - Westours Incorporated | 2 |
HODX
| Heart of Dixie Railway Museum | 5 |
HRS
| Holidaysburg and Roaring Spring Railroad Company | 1 |
HWCR
| HWCR | 1 |
IC
| Illinois Central | 8 |
INDR
| INDR | 1 |
INT
| Norfolk Southern Railway Company | 1 |
IRM
| Indiana Railroad Museum | 5 |
IRWX
| IRWX | 1 |
ISRX
| Iaeger and Southern | 2 |
JESX
| James E Strates Shows | 34 |
KCS
| Kansas City Southern | 5 |
KRM
| Kentucky Railway Museum | 3 |
LA
| Lousiana and Arkansas | 1 |
LGSR
| LGSR | 1 |
LI
| Long Island Rail Road Company | 4 |
LIRR
| Long Island Railroad | 6 |
LN
| Louisville & Nashville | 25 |
LSTX
| LSTX | 6 |
MARC
| Maryland Transit Administration | 17 |
MCRX
| Marcus Rail Transport LLC | 2 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 1 |
MDRY
| Midland Railway Historical Association | 4 |
ME
| Morristown & Erie Railroad | 1 |
MH
| Mount Hood Railroad | 1 |
MILL
| MILL | 1 |
MILW
| Milwaukee Road | 2 |
MJRX
| Railway Service Contractors Inc | 4 |
MKT
| Missouri-Kansas-Texas | 6 |
MP
| Missouri Pacific | 4 |
MRLX
| Mid America Rail Car Leasing | 22 |
MSV
| Mississippi and Skuna Valley Railroad Co | 1 |
MT
| Mississippi and Tennessee RailNet Incorporated | 1 |
MTM
| MTM | 1 |
MV
| MV | 1 |
NARM
| Northern Alabama Railway Museum | 3 |
NCSL
| Nashville Chattanooga & St Louis | 4 |
NGRX
| NGRX | 1 |
NJC
| NJC | 2 |
NMRX
| New Mexico Department Of Transportation | 3 |
NP
| Northern Pacific | 9 |
NRGX
| NRG ENERGY, INC. | 3 |
NS
| Norfolk Southern | 14 |
NSRX
| Railroading Heritage Of Midwest America | 22 |
NW
| Norfolk & Western | 8 |
NYC
| New York Central | 6 |
OMRX
| Ozark Mountain Railcar LLC | 1 |
ONT
| Ontario Northland Railway | 1 |
PAXX
| PAXX | 4 |
PC
| Penn Central | 6 |
PM
| Pere Marquette | 1 |
PPCX
| AAPRCO Register Private Cars | 95 |
PRR
| Pennsylvania Railroad | 8 |
PRWX
| Railway Entertainment Services Inc. | 2 |
PTCX
| PTCX | 1 |
PULL
| Pullman | 27 |
RAS
| RAS | 2 |
RATX
| RailTex Service Company, Inc. | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 88 |
RBMN
| Reading Blue Mountain & Northern | 3 |
RDG
| Reading Railroad | 1 |
RERX
| Reader Railroad | 3 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RHSX
| CentralNew York Chapter NRHS | 2 |
RMSX
| Pandrol Jackson Incorporated | 1 |
RNCX
| North Carolina Dept Of Transportation | 12 |
RNRH
| RNRH | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 17 |
SAL
| Seaboard Air Line | 20 |
SAM
| SAM | 19 |
SBCX
| SBCX | 1 |
SBD
| Seaboard System | 1 |
SBVR
| South Branch Valley Rail Road | 5 |
SC
| SC | 1 |
SCL
| Seaboard Coast Line | 23 |
SCRM
| SCRM | 1 |
SDCX
| Consolidated Minerals Incorporated Feed Supplement Division | 4 |
SDRX
| Central Puget Sound Regional Transit Authority | 9 |
SEMT
| SEMT | 1 |
SIIX
| Siemens Industry Inc | 27 |
SKER
| SKER | 3 |
SLRG
| San Luis and Rio Grande Railroad | 34 |
SLSF
| Saint Louis-San Francisco | 4 |
SMLX
| SMLX | 1 |
SMPX
| Commercial Metal Company | 3 |
SMRX
| Atlanta Chapter B National Railway Historical Society Incorp | 1 |
SOU
| Southern | 58 |
SP
| Southern Pacific | 8 |
SPS
| Spokane Portland & Seattle | 4 |
TC
| Temple & Central Texas | 2 |
TCRX
| Tennessee Central Railway Musem | 2 |
TDIX
| Transdynamic Leasing | 4 |
TRCX
| Florida Tri-Rail | 76 |
TSU
| Tulsa-Sapulpa Union Railway | 1 |
TVRM
| Tennessee Valley | 18 |
UP
| Union Pacific Railroad Company | 17 |
UPP
| Union Pacific Passenger | 2 |
UR
| UR | 1 |
USA
| USA | 1 |
USAX
| United States Army | 4 |
UTAX
| Utah Frontrunner | 4 |
VIA
| Via Rail Canada | 2 |
VRE
| Virginia Railway Express | 8 |
VTR
| Vermont Railway | 3 |
WAB
| Wabash | 1 |
WATX
| Watco | 8 |
WMSR
| Western Maryland Scenic | 8 |
WP
| Western Pacific | 8 |
WRRX
| Waldens Ridge Railroad | 6 |
WVC
| Durbin and Greenbrier Valley Railroad d/ | 4 |