ACL
| Atlantic Coast Line | 3 |
AEE
| American European Express | 5 |
AFT
| AMERICAN FREEDOM TRAIN FOUNDATION | 1 |
ALC
| ALC | 1 |
AMTK
| Amtrak | 84 |
AT
| Auto Train | 1 |
ATSF
| Atchison Topeka & Santa Fe | 103 |
AUT
| AUT | 3 |
BHC
| Black Hills Central | 10 |
BLE
| Bessemer & Lake Erie | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 36 |
BO
| Baltimore & Ohio | 3 |
BRW
| Black River And Western | 1 |
BSRX
| Branson Scenic | 1 |
CBQ
| Chicago Burlington & Quincy | 185 |
CBRH
| CBRH | 3 |
CBRX
| Charles Barthold | 11 |
CFI
| CFI | 3 |
CG
| Central Of Georgia | 12 |
CGW
| Chicago Great Western | 2 |
CLK
| Cadillac & Lake City | 2 |
CM
| Central Montana Rail Incorporated | 8 |
CN
| Canadian National Railways | 12 |
CNW
| Chicago & Northwestern | 7 |
CO
| Chesapeake & Ohio | 3 |
CP
| Canadian Pacific Railway | 10 |
CRIP
| Chicago Rock Island & Pacific | 33 |
CRR
| Clinchfield | 4 |
CRRM
| Colorado Railroad Museum | 1 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 16 |
CS
| Colorado & Southern | 14 |
CTS
| Cumbres & Toltec Scenic | 8 |
CV
| Central Vermont | 3 |
CVRC
| CVRC | 1 |
DCFB
| Dodge City Ford and Bucklin Railroad Com | 1 |
DIM
| DIM | 1 |
DLMX
| Daylight Locomotives and Machine Works Incorporated | 1 |
DLW
| Delaware Lackawanna & Western | 7 |
DMIR
| Duluth Missabe & Iron Range | 1 |
DOTX
| USDOT/Federal Railroad Administration | 3 |
DRGW
| Denver & Rio Grande Western | 102 |
DSL
| Denver & Salt Lake | 5 |
DSNG
| Durango & Silverton Narrow Gauge Railroa | 1 |
DSPP
| Denver, South Park & Pacific RR | 2 |
DTC
| DTC | 1 |
EL
| Erie Lackawanna | 1 |
EMDX
| EMD | 9 |
ERIE
| Erie Railroad | 3 |
FCM
| Ferrocarriles Nacionales de Mexico | 1 |
FEC
| Florida East Coast | 1 |
FEVR
| Fremont & Elkhorn Valley Railroad | 2 |
FGLK
| Finger Lakes Railway | 1 |
FWD
| Fort Worth & Denver | 2 |
FWHS
| FWHS | 1 |
GA
| Georgia Railroad | 3 |
GANO
| Georgia Northern Railway Company | 1 |
GCRX
| Grand Canyon Railway Incorporated | 3 |
GCRY
| Grand Canyon Railway | 6 |
GLRX
| Georgetown Loop Railroad Incorporated | 33 |
GMO
| Gulf Mobile & Ohio | 3 |
GN
| Great Northern | 75 |
GWR
| Great Western Railway Company | 7 |
HIC
| HIC | 1 |
IC
| Illinois Central | 6 |
IRYM
| Illinois Railway Museum | 3 |
ISRX
| Iaeger and Southern | 2 |
JESX
| James E Strates Shows | 1 |
KCS
| Kansas City Southern | 3 |
KRM
| Kentucky Railway Museum | 4 |
LI
| Long Island Rail Road Company | 2 |
LN
| Louisville & Nashville | 18 |
LNAC
| Chattahoochee Bay Railroad, LLC | 1 |
LNER
| London North Eastern Railway | 3 |
LSI
| Lake Superior and Ishpeming Railroad | 2 |
MALX
| Mid-America Locomotive and Car Repair Incorporated | 3 |
MARC
| Maryland Transit Administration | 2 |
MCER
| Massachusetts Central Railroad | 1 |
MCRX
| Marcus Rail Transport LLC | 12 |
MDOT
| Maryland DOT | 2 |
MDRY
| Midland Railway Historical Association | 3 |
ME
| Morristown & Erie Railroad | 1 |
METX
| METRA | 1 |
MILW
| Milwaukee Road | 41 |
MJRX
| Railway Service Contractors Inc | 4 |
MKT
| Missouri-Kansas-Texas | 3 |
MNCR
| Metro North Commuter Railway | 2 |
MON
| Monon Route | 3 |
MP
| Missouri Pacific | 2 |
MPP
| MPP | 1 |
MRLX
| Mid America Rail Car Leasing | 2 |
MSTL
| Minneapolis & St Louis | 1 |
MT
| Mississippi and Tennessee RailNet Incorporated | 5 |
MTA
| NYC Transit | 2 |
NCBX
| New Century Rail Transport LLC | 3 |
NCSL
| Nashville Chattanooga & St Louis | 1 |
NJT
| New Jersey Transit | 21 |
NKP
| Nickel Plate | 2 |
NP
| Northern Pacific | 65 |
NPC
| North Pacific Coast | 1 |
NSRX
| Railroading Heritage Of Midwest America | 2 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 11 |
NYSW
| New York Susquehanna & Western | 1 |
OE
| Oregon Electric | 5 |
PAR
| PAR | 1 |
PC
| Penn Central | 8 |
PCI
| PCI | 1 |
PNRX
| United States Atomic Energy Commission, Pittsburgh Naval Reactors Offi | 1 |
PNWC
| PNWC | 3 |
PPCX
| AAPRCO Register Private Cars | 29 |
PRR
| Pennsylvania Railroad | 31 |
PULL
| Pullman | 73 |
PVTC
| PVTC | 2 |
PVTX
| PVTX | 1 |
RBMN
| Reading Blue Mountain & Northern | 2 |
RBX
| Ringling Bros. and Barnum and Bailey | 1 |
RDG
| Reading Railroad | 2 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RGS
| Rio Grande Southern | 3 |
RNRH
| RNRH | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 7 |
RVIX
| Rail Ventures Inc | 2 |
SAL
| Seaboard Air Line | 5 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 7 |
SDCX
| Consolidated Minerals Incorporated Feed Supplement Division | 5 |
SFS
| Santa Fe Southern | 1 |
SLCC
| St. Louis Car Company | 4 |
SLIM
| St Louis, Iron Mountain & Southern | 1 |
SLRG
| San Luis and Rio Grande Railroad | 21 |
SLSF
| Saint Louis-San Francisco | 4 |
SMPX
| Commercial Metal Company | 3 |
SOO
| Soo Line | 1 |
SOU
| Southern | 9 |
SP
| Southern Pacific | 84 |
SPS
| Spokane Portland & Seattle | 11 |
SRC
| Strasburg Railroad | 4 |
TC1
| Tennessee Central | 1 |
TNO
| Texas & New Orleans | 1 |
UP
| Union Pacific Railroad Company | 128 |
UPP
| Union Pacific Passenger | 2 |
URHS
| URHS | 3 |
URY
| Union Ry. of Memphis | 7 |
USAX
| United States Army | 6 |
VIA
| Via Rail Canada | 8 |
VRIC
| Virginia Rail Investment | 2 |
WAB
| Wabash | 4 |
WC
| Wisconsin Central | 1 |
WP
| Western Pacific | 4 |
WPYR
| White Pass & Yukon Route | 3 |
WS
| Ware Shoals RR | 1 |
WSOR
| Wisconsin & Southern | 1 |
YV
| YV | 1 |