ADIX
| Adirondack Railway Preservation Society | 4 |
AMTK
| Amtrak | 205 |
AMTL
| Agence métropolitaine de transport | 4 |
BM
| Boston & Maine | 2 |
BNSF
| BNSF Railway | 13 |
BRW
| Black River And Western | 10 |
CBQ
| Chicago Burlington & Quincy | 2 |
CDOT
| Conneticut Department of Transportation | 1 |
CDTX
| California DOT | 8 |
CFR
| CFR | 2 |
CNJ
| Central Rail Road of New Jersey | 11 |
CP
| Canadian Pacific Railway | 3 |
CRIP
| Chicago Rock Island & Pacific | 1 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 2 |
CSX
| CSX Railroad | 8 |
DLW
| Delaware Lackawanna & Western | 2 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
EBT
| East Broad Top | 13 |
FCEN
| Florida Central | 2 |
GLTX
| GLTX | 1 |
GMO
| Gulf Mobile & Ohio | 1 |
GMRC
| Green Mountain RR | 2 |
GN
| Great Northern | 1 |
GTLX
| Great Lakes Railcar, Inc. | 2 |
JESX
| James E Strates Shows | 4 |
JTC
| JTC | 1 |
JTCX
| Juniata Terminal | 8 |
KKRR
| Knox and Kane Railroad Company | 1 |
LC
| Lancaster & Chester | 4 |
LI
| Long Island Rail Road Company | 7 |
LN
| Louisville & Nashville | 2 |
MARC
| Maryland Transit Administration | 9 |
MBTA
| Massachusetts Bay Transit Authority | 2 |
MBTX
| MBTX | 4 |
MC
| Mass Coastal | 1 |
ME
| Morristown & Erie Railroad | 8 |
MECR
| MECR | 4 |
MH
| Mount Hood Railroad | 1 |
MIDH
| Middletown and Hummelstown RR Company | 14 |
MILW
| Milwaukee Road | 7 |
MKT
| Missouri-Kansas-Texas | 17 |
MNCR
| Metro North Commuter Railway | 1 |
MRLX
| Mid America Rail Car Leasing | 11 |
NHIR
| New Hope & Ivyland | 1 |
NJT
| New Jersey Transit | 51 |
NRHX
| National Railway Historical Society | 12 |
NS
| Norfolk Southern | 4 |
NYC
| New York Central | 80 |
NYGL
| New York and Greenwood Lake Railroad | 2 |
PAPX
| Pennsylvania Pullmans Incorporated | 1 |
PAXX
| PAXX | 2 |
PCX
| PCX | 3 |
PM
| Pere Marquette | 2 |
PPCX
| AAPRCO Register Private Cars | 639 |
PRR
| Pennsylvania Railroad | 300 |
PRSL
| Pennsylvania Reading Seashore | 5 |
PRWX
| Railway Entertainment Services Inc. | 6 |
PULL
| Pullman | 3 |
PW
| Providence and Worcester | 11 |
RBBX
| Ringling Bros. and Barnum and Bailey | 1 |
RBMN
| Reading Blue Mountain & Northern | 4 |
RDG
| Reading Railroad | 5 |
RNCX
| North Carolina Dept Of Transportation | 3 |
RPCX
| Railroad Passenger Car Numbering Bureau | 88 |
SBRR
| Stourbridge Railroad Company | 1 |
SLRG
| San Luis and Rio Grande Railroad | 12 |
SLRS
| SMS Rail Service Incorporated | 7 |
SP
| Southern Pacific | 2 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 16 |
SR
| Kansas City Southern | 2 |
SRC
| Strasburg Railroad | 2 |
SRNJ
| Southern Railroad Company of New Jersey | 1 |
SUEX
| SUEX | 3 |
TCRX
| Tennessee Central Railway Musem | 2 |
TRCX
| Florida Tri-Rail | 6 |
TRWX
| Trinity Railway Express | 2 |
TSR
| Texas State Railroad | 1 |
UP
| Union Pacific Railroad Company | 1 |
URHS
| URHS | 10 |
UTAX
| Utah Frontrunner | 6 |
VIA
| Via Rail Canada | 13 |
VRE
| Virginia Railway Express | 2 |
VRIC
| Virginia Rail Investment | 46 |
WATX
| Watco | 2 |
WCRL
| West Chester Railroad Company | 5 |
WRHX
| Creative Charters Inc | 1 |
WVC
| Durbin and Greenbrier Valley Railroad d/ | 1 |