ACEX
| Altamont Commuter Express | 5 |
AMTK
| Amtrak | 26 |
ARA
| Arcade and Attica Railroad Corporation | 6 |
AZER
| Arizona Eastern Railway Company | 1 |
BGRR
| Bluegrass Scenic Railroad | 3 |
BL
| BL | 2 |
BSOR
| Buffalo Southern | 2 |
CBQ
| Chicago Burlington & Quincy | 1 |
CCGX
| Cando Contracting Limited | 3 |
CCH
| Cape Cod & Hyannis | 4 |
CDTX
| California DOT | 2 |
CFNR
| California Northern | 1 |
CFRC
| CFRC | 48 |
CRMX
| MHC Incorporated (Subsidiary of Conagra Incorporated) | 2 |
CTRS
| CTRS | 1 |
CTSR
| CTSR | 1 |
CVAR
| Cedar Valley Railroad | 1 |
DAWX
| D.A. Walmsley and Company | 1 |
DM
| Detroit & Mackinac | 3 |
DOTX
| USDOT/Federal Railroad Administration | 3 |
EIRR
| Eastern Idaho Railroad Incorporated | 1 |
EOLX
| EOLX | 6 |
ERR
| Edaville Railroad Corp | 1 |
FEC
| Florida East Coast | 4 |
FLNX
| R.P. Flynn Incorporated d/b/a Ohio Railway Supply | 7 |
GA
| Georgia Railroad | 4 |
GLRX
| Georgetown Loop Railroad Incorporated | 1 |
GM
| Gainesville Midland | 1 |
GMRC
| Green Mountain RR | 1 |
HSRR
| Hardin Southern Railroad Incorporated | 2 |
INPR
| Idaho Northern and Pacific Railroad | 2 |
JESX
| James E Strates Shows | 10 |
KJR
| Kiski Junction Railroad | 1 |
KXHR
| Knoxville & Holston River RR | 5 |
MARC
| Maryland Transit Administration | 1 |
MH
| Mount Hood Railroad | 4 |
MKT
| Missouri-Kansas-Texas | 1 |
MRLX
| Mid America Rail Car Leasing | 17 |
MTDX
| Midwest Transportation & Development Cor | 3 |
NAP
| Narragansett Pier Railroad Company | 1 |
NMRX
| New Mexico Department Of Transportation | 3 |
NRTX
| Nashville Music City Star | 2 |
NSHR
| North Shore | 5 |
NSRX
| Railroading Heritage Of Midwest America | 1 |
NVRR
| NAPA Valley Railroad Company | 9 |
OCW
| Ocean City Western Railroad | 2 |
ONE
| London Eastern Railway Ltd. | 1 |
OPR
| Oregon Pacific | 1 |
PPCX
| AAPRCO Register Private Cars | 15 |
PVRR
| Pioneer Valley Railroad Company Incorporated | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 7 |
RERX
| Reader Railroad | 6 |
RJCR
| RJ Corman | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 4 |
RRVW
| Red River Valley and Western Railroad | 1 |
RUT
| Vermont Railway Incorporated | 1 |
RVIX
| Rail Ventures Inc | 1 |
SCAX
| SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | 1 |
SDNX
| Coaster | 1 |
SERA
| Sierra Northern Railway | 9 |
SFRV
| SFRV | 7 |
SP
| Southern Pacific | 2 |
STRT
| Stewartstown Railroad Company | 2 |
TCRY
| Tri-City Railroad | 1 |
TRCX
| Florida Tri-Rail | 2 |
TTI
| Transkentucky Transportation | 1 |
USSC
| United States Sugar | 1 |
WCLR
| Waccamaw Coastline | 2 |
WP
| Western Pacific | 1 |
WVC
| Durbin and Greenbrier Valley Railroad d/ | 1 |