AC
| Algoma Central | 4 |
AM
| Arkansas & Missouri | 3 |
AMTK
| Amtrak | 313 |
AOE
| American Orient Express | 3 |
ARTX
| Artrain | 7 |
ATAX
| Arizona Transit Assembly | 8 |
ATSF
| Atchison Topeka & Santa Fe | 4 |
BLE
| Bessemer & Lake Erie | 1 |
BNSF
| BNSF Railway | 17 |
BRBX
| Bombardier Transportation | 1 |
BSVY
| Boone & Scenic Valley Railroad | 7 |
CBQ
| Chicago Burlington & Quincy | 7 |
CBRX
| Charles Barthold | 6 |
CDCG
| CDCG | 1 |
CFNR
| California Northern | 1 |
CGW
| Chicago Great Western | 1 |
CIM
| Chicago And Illinois Midland | 1 |
CN
| Canadian National Railways | 1 |
CNRX
| Canadian Northern Railway LLC | 1 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 6 |
CREX
| Citicorp Railmark, Inc | 1 |
CRIP
| Chicago Rock Island & Pacific | 8 |
CTR
| Clinton Terminal Railroad Company | 1 |
CZRC
| CZRC | 2 |
DCW
| DCW | 1 |
DLW
| Delaware Lackawanna & Western | 4 |
DME
| Dakota, Minnesota and Eastern | 1 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
DPCX
| Dragon Phosphate Company | 1 |
DSSA
| Duluth, South Shore & Atlantic | 1 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FEVR
| Fremont & Elkhorn Valley Railroad | 2 |
GA
| Georgia Railroad | 1 |
GECX
| General Electric Company | 1 |
GMO
| Gulf Mobile & Ohio | 2 |
GMRC
| Green Mountain RR | 1 |
GN
| Great Northern | 5 |
GNWB
| GNWB | 1 |
GRMX
| Gopher State Railway Museum | 1 |
GTLX
| Great Lakes Railcar, Inc. | 2 |
HRT
| Hartwell RR | 1 |
IANR
| Iowa Northern Ry | 2 |
IANW
| Iowa Northwestern | 7 |
ITAX
| Illinois Transit Assembly Incorporated | 1 |
LN
| Louisville & Nashville | 1 |
LSMR
| LSMR | 2 |
LSRX
| Lake Superior Railroad Museum | 2 |
MCL
| MCL | 1 |
ME
| Morristown & Erie Railroad | 3 |
METX
| METRA | 1 |
MILW
| Milwaukee Road | 6 |
MKT
| Missouri-Kansas-Texas | 1 |
MLWX
| MLWX | 2 |
MNNR
| Minnesota Commercial | 1 |
MNRX
| Minnesota Northstar | 15 |
MNTX
| Minnesota Transportation Museum, Inc. | 5 |
MRLX
| Mid America Rail Car Leasing | 8 |
NAR
| Northern Alberta Railways | 1 |
NCSL
| Nashville Chattanooga & St Louis | 1 |
NH
| New Haven | 1 |
NP
| Northern Pacific | 4 |
NSRX
| Railroading Heritage Of Midwest America | 9 |
NYC
| New York Central | 4 |
OCNR
| OCNR | 2 |
OCSR
| OCSR | 1 |
PAXX
| PAXX | 2 |
PMCX
| PMCX | 3 |
PPBR
| PPBR | 1 |
PPCX
| AAPRCO Register Private Cars | 26 |
PRR
| Pennsylvania Railroad | 1 |
RAMX
| Rail Merchants International | 2 |
RAS
| RAS | 1 |
RBMN
| Reading Blue Mountain & Northern | 7 |
RDG
| Reading Railroad | 1 |
RMRX
| Great Canadian Railtours Co Ltd | 1 |
RNRH
| RNRH | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 11 |
RRDX
| RRDX | 14 |
RVIX
| Rail Ventures Inc | 2 |
SBD
| Seaboard System | 1 |
SDRX
| Central Puget Sound Regional Transit Authority | 3 |
SHRX
| Smoky Hill Railway & Historical Society | 4 |
SLRG
| San Luis and Rio Grande Railroad | 7 |
SOO
| Soo Line | 3 |
SP
| Southern Pacific | 1 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SPS
| Spokane Portland & Seattle | 5 |
SUEX
| SUEX | 1 |
SVRR
| Shamokin Valley Railroad Company | 1 |
TRWX
| Trinity Railway Express | 2 |
UKNW
| UKNW | 1 |
UNKN
| UNKN | 1 |
UNKW
| UNKW | 1 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 31 |
USSC
| United States Sugar | 1 |
VIA
| Via Rail Canada | 1 |
VRIC
| Virginia Rail Investment | 2 |
WC
| Wisconsin Central | 2 |
WGN
| Wisconsin Great Northern | 6 |
WGNS
| Wisconsin Great Northern Railroad Inc | 4 |
WP
| Western Pacific | 1 |
WRHX
| Creative Charters Inc | 2 |
ZWSR
| ZWSR | 1 |