AC
| Algoma Central | 2 |
ADEX
| ADEX | 1 |
ADIX
| Adirondack Railway Preservation Society | 1 |
AMTK
| Amtrak | 117 |
AOE
| American Orient Express | 3 |
ARTX
| Artrain | 4 |
ATAX
| Arizona Transit Assembly | 29 |
ATCX
| Southern Illinois Railcar Incorporated | 2 |
ATSF
| Atchison Topeka & Santa Fe | 9 |
BHC
| Black Hills Central | 1 |
BHCR
| BHCR | 1 |
BM
| Boston & Maine | 2 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 17 |
BO
| Baltimore & Ohio | 1 |
BRN
| BRN | 4 |
BSVY
| Boone & Scenic Valley Railroad | 6 |
CASS
| Cass Scenic | 12 |
CBQ
| Chicago Burlington & Quincy | 64 |
CM
| Central Montana Rail Incorporated | 1 |
CN
| Canadian National Railways | 24 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 28 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 27 |
CRIP
| Chicago Rock Island & Pacific | 49 |
CS
| Colorado & Southern | 3 |
CWR
| CWR Incorporated | 4 |
DIR
| DIR | 2 |
DLW
| Delaware Lackawanna & Western | 1 |
DMIR
| Duluth Missabe & Iron Range | 38 |
DMN
| Duluth Missabe and Northern Railway | 2 |
DOTX
| USDOT/Federal Railroad Administration | 4 |
DPCX
| Dragon Phosphate Company | 1 |
DRGW
| Denver & Rio Grande Western | 6 |
DSL
| Denver & Salt Lake | 2 |
DSSA
| Duluth, South Shore & Atlantic | 1 |
ECC
| ECC | 2 |
ERIX
| Eric Dewayne Hopp | 9 |
GBRX
| Greenbrier Leasing Corporation | 1 |
GBW
| Green Bay & Western | 4 |
GCRX
| Grand Canyon Railway Incorporated | 9 |
GCRY
| Grand Canyon Railway | 10 |
GLRR
| GLRR | 2 |
GLRX
| Georgetown Loop Railroad Incorporated | 2 |
GMO
| Gulf Mobile & Ohio | 3 |
GN
| Great Northern | 146 |
GNWB
| GNWB | 36 |
GTW
| Grand Trunk Western | 9 |
IC
| Illinois Central | 24 |
ISRX
| Iaeger and Southern | 1 |
KCS
| Kansas City Southern | 3 |
KMRY
| KMRY | 1 |
LCRA
| LCRA | 1 |
LN
| Louisville & Nashville | 8 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
LSMR
| LSMR | 4 |
LSRX
| Lake Superior Railroad Museum | 34 |
METX
| METRA | 7 |
MILW
| Milwaukee Road | 137 |
MKT
| Missouri-Kansas-Texas | 11 |
MNNR
| Minnesota Commercial | 2 |
MNRX
| Minnesota Northstar | 21 |
MNTX
| Minnesota Transportation Museum, Inc. | 256 |
MRLX
| Mid America Rail Car Leasing | 11 |
MT
| Mississippi and Tennessee RailNet Incorporated | 1 |
MTA
| NYC Transit | 1 |
NCSL
| Nashville Chattanooga & St Louis | 1 |
NH
| New Haven | 2 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 44 |
NSR
| Newburgh and South Shore Railroad Compan | 1 |
NSRX
| Railroading Heritage Of Midwest America | 268 |
NYC
| New York Central | 29 |
NYSW
| New York Susquehanna & Western | 6 |
OIM
| Oliver Mining Co | 5 |
ORLC
| ORLC | 2 |
OSRM
| OSRM | 2 |
PAXX
| PAXX | 48 |
PCI
| PCI | 2 |
PPCX
| AAPRCO Register Private Cars | 106 |
PRR
| Pennsylvania Railroad | 4 |
PULL
| Pullman | 1 |
RAS
| RAS | 12 |
RBBX
| Ringling Bros. and Barnum and Bailey | 4 |
RCPX
| Railcar Limited | 1 |
RDG
| Reading Railroad | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 13 |
SDCX
| Consolidated Minerals Incorporated Feed Supplement Division | 3 |
SHRX
| Smoky Hill Railway & Historical Society | 13 |
SLIM
| St Louis, Iron Mountain & Southern | 1 |
SLRG
| San Luis and Rio Grande Railroad | 13 |
SLSF
| Saint Louis-San Francisco | 3 |
SOO
| Soo Line | 16 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 3 |
SPP
| SPP | 4 |
SPPR
| SPPR | 4 |
SRC
| Strasburg Railroad | 9 |
TRR
| Tweetsie Railroad | 15 |
TSU
| Tulsa-Sapulpa Union Railway | 2 |
UP
| Union Pacific Railroad Company | 73 |
UPP
| Union Pacific Passenger | 90 |
USAX
| United States Army | 60 |
VALE
| Valley Railroad Company | 1 |
WM
| Western Maryland | 1 |
WMSR
| Western Maryland Scenic | 1 |
WP
| Western Pacific | 9 |
WRHX
| Creative Charters Inc | 1 |
WRLX
| Relco Tank Line Incorporated | 2 |
WSOR
| Wisconsin & Southern | 6 |