ACRR
| ACRR | 3 |
ACWR
| Aberdeen, Carolina & Western | 1 |
AMTK
| Amtrak | 220 |
ARR
| Alaska Railroad | 4 |
BCVX
| West Coast Express | 2 |
BO
| Baltimore & Ohio | 2 |
BRW
| Black River And Western | 5 |
CBQ
| Chicago Burlington & Quincy | 3 |
CDOT
| Conneticut Department of Transportation | 5 |
CFR
| CFR | 4 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 1 |
CRIP
| Chicago Rock Island & Pacific | 1 |
CRR
| Clinchfield | 7 |
CSRX
| Conway Scenic Railroad | 3 |
CSX
| CSX Railroad | 4 |
CTVX
| Cleveland Terminal and Valley Railway Incorporated | 2 |
CVSR
| Cuyahoga Valley Scenic RR | 7 |
DLW
| Delaware Lackawanna & Western | 2 |
DRMX
| Danbury Railway Museum Incorporated | 1 |
EBT
| East Broad Top | 9 |
EV
| Everett Railroad | 3 |
GCRY
| Grand Canyon Railway | 19 |
GTLX
| Great Lakes Railcar, Inc. | 1 |
HALX
| Holland American Line - Westours Incorporated | 10 |
HRS
| Holidaysburg and Roaring Spring Railroad Company | 3 |
HVRX
| Heber Valley Historic Railroad | 3 |
HZGX
| Herzog Contracting Corporation | 1 |
JPBX
| Joint Powers Board (CalTrain) | 1 |
KPRY
| KPRY | 3 |
LAL
| Livonia Avon & Lakeville | 3 |
LGSR
| LGSR | 6 |
LKP
| LKP | 1 |
LKPR
| LKPR | 3 |
LNER
| London North Eastern Railway | 1 |
MARC
| Maryland Transit Administration | 11 |
MBTA
| Massachusetts Bay Transit Authority | 7 |
ME
| Morristown & Erie Railroad | 3 |
METX
| METRA | 2 |
MIDH
| Middletown and Hummelstown RR Company | 6 |
MILW
| Milwaukee Road | 1 |
MNCR
| Metro North Commuter Railway | 9 |
MPA
| Maryland and Pennsylvania Railroad | 3 |
MTA
| NYC Transit | 1 |
NCRR
| NCRR | 5 |
NCTD
| NCTD | 1 |
NCTM
| NCTM | 1 |
NHI
| NHI | 10 |
NHIR
| New Hope & Ivyland | 6 |
NHRR
| New Hope and Ivyland Rail Road | 7 |
NJT
| New Jersey Transit | 247 |
NRHX
| National Railway Historical Society | 2 |
NRTX
| Nashville Music City Star | 12 |
NS
| Norfolk Southern | 6 |
NSHR
| North Shore | 12 |
NSRM
| NSRM | 2 |
NSRX
| Railroading Heritage Of Midwest America | 1 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 11 |
NYGL
| New York and Greenwood Lake Railroad | 1 |
NYSW
| New York Susquehanna & Western | 1 |
PC
| Penn Central | 1 |
PPCX
| AAPRCO Register Private Cars | 27 |
PPLX
| Pennsylvania Power and Light Company | 1 |
PR
| Palmetto Railways | 2 |
PRR
| Pennsylvania Railroad | 40 |
PRSL
| Pennsylvania Reading Seashore | 1 |
PULL
| Pullman | 3 |
RBBX
| Ringling Bros. and Barnum and Bailey | 10 |
RBMN
| Reading Blue Mountain & Northern | 229 |
RCTH
| RCTH | 1 |
RDG
| Reading Railroad | 45 |
RMRX
| Great Canadian Railtours Co Ltd | 8 |
RNRR
| RNRR | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 10 |
SBRR
| Stourbridge Railroad Company | 1 |
SCRX
| SOUTH CAROLINA PUBLIC RAILWAYS | 13 |
SDNX
| Coaster | 2 |
SLRG
| San Luis and Rio Grande Railroad | 5 |
SLRS
| SMS Rail Service Incorporated | 2 |
SLSF
| Saint Louis-San Francisco | 1 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 21 |
SRC
| Strasburg Railroad | 9 |
STRT
| Stewartstown Railroad Company | 1 |
SUEX
| SUEX | 1 |
TCRX
| Tennessee Central Railway Musem | 13 |
THSX
| New York, Susquehanna & Western Rwy. | 2 |
TIOC
| Tioga Central | 1 |
TRCX
| Florida Tri-Rail | 2 |
TRMX
| The Railroad Museum-TRM Industries | 1 |
UP
| Union Pacific Railroad Company | 4 |
URHS
| URHS | 2 |
USA
| USA | 2 |
UTAX
| Utah Frontrunner | 3 |
VRIC
| Virginia Rail Investment | 2 |
WCRL
| West Chester Railroad Company | 10 |
WEBX
| WEBX | 2 |
WKS
| WKS | 1 |
WM
| Western Maryland | 1 |
WPYR
| White Pass & Yukon Route | 14 |
WRM
| WRM | 1 |
WSRR
| WSRR | 5 |
WW
| Winchester & Western | 1 |