AMTK
| Amtrak | 288 |
AOE
| American Orient Express | 8 |
ARR
| Alaska Railroad | 12 |
ARTX
| Artrain | 2 |
ATAX
| Arizona Transit Assembly | 89 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BLRX
| BLRX | 11 |
BMT
| BMT | 1 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 12 |
BOMX
| B&O Railroad Museum Inc. | 4 |
BPE
| BPE | 1 |
BRT
| BRT | 1 |
CALA
| Carolina Southern | 22 |
CBQ
| Chicago Burlington & Quincy | 9 |
CG
| Central Of Georgia | 1 |
CN
| Canadian National Railways | 4 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 4 |
CO
| Chesapeake & Ohio | 7 |
CP
| Canadian Pacific Railway | 53 |
CSX
| CSX Railroad | 35 |
CWC
| Charleston & Western Carolina | 11 |
DB
| Deutsche Bahn | 1 |
DLMX
| Daylight Locomotives and Machine Works Incorporated | 1 |
DLW
| Delaware Lackawanna & Western | 1 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DR
| Dardanelle and Russellville Railroad Inc | 1 |
EL
| Erie Lackawanna | 2 |
ERIE
| Erie Railroad | 1 |
GA
| Georgia Railroad | 3 |
GMO
| Gulf Mobile & Ohio | 1 |
GN
| Great Northern | 7 |
HRT
| Hartwell RR | 1 |
IC
| Illinois Central | 17 |
LC
| Lancaster & Chester | 107 |
LCRA
| LCRA | 1 |
LN
| Louisville & Nashville | 2 |
LVB
| LVB | 1 |
MARC
| Maryland Transit Administration | 10 |
ME
| Morristown & Erie Railroad | 40 |
METX
| METRA | 5 |
MH
| Mount Hood Railroad | 1 |
MILW
| Milwaukee Road | 9 |
MKT
| Missouri-Kansas-Texas | 2 |
MNCR
| Metro North Commuter Railway | 3 |
MRLX
| Mid America Rail Car Leasing | 8 |
MSV
| Mississippi and Skuna Valley Railroad Co | 1 |
MTA
| NYC Transit | 3 |
NJT
| New Jersey Transit | 1 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 3 |
NRHX
| National Railway Historical Society | 7 |
NS
| Norfolk Southern | 22 |
NSRX
| Railroading Heritage Of Midwest America | 49 |
NW
| Norfolk & Western | 7 |
NYC
| New York Central | 60 |
PAR
| PAR | 1 |
PAX
| PAX | 2 |
PAXX
| PAXX | 8 |
PNWC
| PNWC | 2 |
PPCX
| AAPRCO Register Private Cars | 262 |
PRR
| Pennsylvania Railroad | 30 |
RBBX
| Ringling Bros. and Barnum and Bailey | 86 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RDG
| Reading Railroad | 1 |
RFP
| Richmond Fredericksburg & Potomac | 6 |
RGS
| Rio Grande Southern | 1 |
RHSX
| CentralNew York Chapter NRHS | 1 |
RIO
| RIO | 2 |
RNCX
| North Carolina Dept Of Transportation | 124 |
RNRH
| RNRH | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 27 |
RZD
| ??? Russian Railways | 1 |
SAL
| Seaboard Air Line | 78 |
SAM
| SAM | 52 |
SARM
| SARM | 8 |
SCL
| Seaboard Coast Line | 1 |
SLRG
| San Luis and Rio Grande Railroad | 45 |
SNDX
| Sound Transit | 2 |
SOU
| Southern | 18 |
SP
| Southern Pacific | 6 |
SPS
| Spokane Portland & Seattle | 2 |
SR
| Kansas City Southern | 8 |
TCRX
| Tennessee Central Railway Musem | 19 |
TDIX
| Transdynamic Leasing | 2 |
TVRM
| Tennessee Valley | 13 |
UP
| Union Pacific Railroad Company | 11 |
VIA
| Via Rail Canada | 264 |
VRE
| Virginia Railway Express | 5 |
VRIC
| Virginia Rail Investment | 4 |
VT
| Virginia & Truckee | 1 |
WATX
| Watco | 21 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 1 |
WPRR
| Willamette and Pacific | 3 |