AARX
| Association of American Railroads | 1 |
ABOX
| TTX Company | 42 |
ADN
| Ashley Drew & Northern | 3 |
AGR
| Alabama and Gulf Coast | 9 |
ALAB
| Alabama Railroad | 3 |
ALM
| Arkansas Louisiana and Mississippi Railr | 5 |
ANR
| Angelina and Neches River Railroad | 2 |
AOK
| Arkansas-Oklahoma Railroad | 14 |
ATSF
| Atchison Topeka & Santa Fe | 17 |
ATW
| Atlantic and Western | 21 |
AZER
| Arizona Eastern Railway Company | 14 |
BAEX
| Andersons | 8 |
BAYL
| Bay Line, LLC | 1 |
BB
| Buckingham Branch | 1 |
BCLR
| Bay Colony | 1 |
BCOL
| Canadian National Railways | 14 |
BKTY
| Union Pacific Railroad Company | 127 |
BN
| Burlington Northern | 7 |
BNSF
| BNSF Railway | 38 |
BO
| Baltimore & Ohio | 1 |
CBQ
| Chicago Burlington & Quincy | 2 |
CIBX
| CIT Group/Capital Finance, Inc | 4 |
CIC
| Cedar Rapids & Iowa City | 2 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CKIX
| C.K. Industries | 1 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CMHX
| CarMath Incorporated | 5 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 33 |
CNA
| Canadian National Railways | 67 |
CNIS
| Canadian National Railways | 20 |
CNW
| Chicago & Northwestern | 46 |
CO
| Chesapeake & Ohio | 8 |
COER
| Crab Orchard & Egyptian | 16 |
CP
| Canadian Pacific Railway | 17 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 99 |
CSX
| CSX Railroad | 285 |
CV
| Central Vermont | 2 |
DMM
| Dansville and Mount Morris Railroad Comp | 5 |
DODX
| Department Of Defense | 1 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DRGW
| Denver & Rio Grande Western | 14 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
DWC
| Canadian National Railways | 16 |
EEC
| East Erie Commercial Railroad | 12 |
FBOX
| TTX Company | 39 |
FCRD
| First Coast Railway | 7 |
FP
| Fordyce & Princeton Railroad Company | 1 |
FRR
| Falls Road Railroad Company Incorporated | 2 |
FSR
| Fort Smith Railroad Company | 3 |
FSRR
| FerroSur | 8 |
FXE
| Ferromex | 14 |
GACX
| General American Marks Company | 7 |
GMO
| Gulf Mobile & Ohio | 2 |
GMRC
| Green Mountain RR | 2 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 4 |
GRRY
| GRRY | 1 |
GTRA
| Golden Triangle Railroad | 5 |
GTW
| Grand Trunk Western | 60 |
HESR
| Huron and Eastern | 1 |
HLMX
| Helm Financial Corporation | 3 |
HS
| H and S Railroad Company | 48 |
IANR
| Iowa Northern Ry | 2 |
IATR
| Iowa Traction Railroad Company | 6 |
IBT
| International Bridge and Terminal Company | 26 |
IC
| Illinois Central | 34 |
ICG
| Illinois Central Gulf | 42 |
KCS
| Kansas City Southern | 34 |
KCSM
| Kansas City Southern De Mexico | 2 |
KLRX
| KOCH RAIL LLC | 1 |
KPR
| Kelowna Pacific Railway Ltd. | 1 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LINX
| LINX | 1 |
LRS
| Laurinburg and Southern | 59 |
LRWN
| Little Rock & Western | 7 |
LW
| Louisville and Wadley Railway Company | 5 |
MDW
| Minnesota Dakota and Western Railway Com | 10 |
MEC
| Maine Central | 4 |
MET
| Modesto and Empire Traction Company | 1 |
MILW
| Milwaukee Road | 2 |
MNA
| Missouri and Northern Arkansas | 5 |
MNS
| Minneapolis Northfield & Southern | 1 |
MP
| Missouri Pacific | 54 |
MR
| McCloud Railway Company | 1 |
MRL
| Montana Rail Link | 1 |
MRMX
| Midwest Railcar Corporation | 1 |
MRS
| Manufacturers Railway | 1 |
MSDR
| Knoxville & Holston River Railroad | 2 |
MWCX
| Midwest Railcar Corporation | 6 |
NADX
| General Electric Rail Services | 2 |
NDYX
| First Union Rail | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 9 |
NKP
| Nickel Plate | 2 |
NOKL
| Northwestern Oklahoma | 12 |
NRI
| Nebkota Railway Incorporated | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 137 |
NSHR
| North Shore | 1 |
NW
| Norfolk & Western | 21 |
NWR
| Nashville & Western Railroad Corp. | 2 |
NYC
| New York Central | 74 |
OAR
| Old Augusta Railroad | 1 |
ONT
| Ontario Northland Railway | 1 |
PAL
| Paducah & Louisville | 1 |
PC
| Penn Central | 1 |
PGR
| Progressive Rail, Inc | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PRR
| Pennsylvania Railroad | 1 |
QC
| Quebec Central | 2 |
RBOX
| Railbox Company | 358 |
RDG
| Reading Railroad | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 6 |
RMMX
| Andersons - Railgroup | 1 |
SBD
| Seaboard System | 3 |
SCFX
| SCFX | 1 |
SGLR
| Seminole Gulf | 1 |
SMW
| St Marys Railway West LLC | 3 |
SNC
| Saratoga & North Creek Railway | 3 |
SOO
| Soo Line | 4 |
SOU
| Southern | 126 |
SOXX
| SMBC RAIL SERVICES LLC | 2 |
SP
| Southern Pacific | 116 |
SRN
| Sabine River & Northern | 8 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 37 |
STE
| Stockton Terminal and Eastern RR | 1 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 163 |
TCWR
| Twin Cities and Western | 1 |
TFM
| Kansas City Southern De Mexico | 5 |
TILX
| Trinity Industries Leasing Company | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 4 |
TOFX
| TTX Company - Box Cars | 2 |
TR
| Tomahawk Railway L.P. | 7 |
TSE
| Texas South-Eastern Railroad Company | 1 |
UCRY
| Utah Central | 2 |
UELX
| ADM Transportation Company | 2 |
UP
| Union Pacific Railroad Company | 42 |
UPP
| Union Pacific Passenger | 2 |
WAB
| Wabash | 1 |
WC
| Wisconsin Central | 40 |
WCCL
| Wisconsin Central | 2 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WFRX
| WELLS FARGO RAIL CORPORATION | 2 |
WGCR
| Wiregrass Central Railroad. Incorporated | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 13 |
WP
| Western Pacific | 33 |
WRWK
| Providence & Worchester Railroad | 9 |
WSOR
| Wisconsin & Southern | 6 |
YKR
| York Rail | 4 |