ABOX
| TTX Company | 15 |
ADN
| Ashley Drew & Northern | 1 |
AGR
| Alabama and Gulf Coast | 31 |
AKMD
| Arkansas Midland Railroad Company | 1 |
ALAB
| Alabama Railroad | 4 |
ALM
| Arkansas Louisiana and Mississippi Railr | 7 |
AM
| Arkansas & Missouri | 22 |
AN
| Apalachicola Northern | 1 |
ANR
| Angelina and Neches River Railroad | 5 |
AOK
| Arkansas-Oklahoma Railroad | 66 |
ARMH
| Union Pacific Railroad Company | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 31 |
ATW
| Atlantic and Western | 58 |
AZER
| Arizona Eastern Railway Company | 2 |
BAEX
| Andersons | 5 |
BAYL
| Bay Line, LLC | 1 |
BCIT
| Canadian National Railways | 1 |
BCOL
| Canadian National Railways | 28 |
BKTY
| Union Pacific Railroad Company | 185 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 8 |
BNSF
| BNSF Railway | 66 |
BPRR
| Buffalo and Pittsburgh | 1 |
BR
| Buffalo and Pittsburgh | 3 |
CAIX
| CAI Rail Inc. | 3 |
CBQ
| Chicago Burlington & Quincy | 1 |
CCR
| Corinth & Counce | 2 |
CEMX
| Cemex Mexico SA de CV | 1 |
CGW
| Chicago Great Western | 2 |
CHTT
| Chicago Heights Terminal Transfer | 6 |
CIBX
| CIT Group/Capital Finance, Inc | 1 |
CLC
| Columbia and Cowlitz Railway Company | 4 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 56 |
CNA
| Canadian National Railways | 31 |
CNIS
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 39 |
COER
| Crab Orchard & Egyptian | 112 |
CP
| Canadian Pacific Railway | 37 |
CPAA
| Canadian Pacific Railway | 6 |
CR
| Conrail | 5 |
CRDX
| Chicago Freight Car Leasing Company | 2 |
CRLE
| Coe Rail Incorporated | 12 |
CSX
| CSX Railroad | 101 |
CUOH
| Columbus and Ohio River Railroad Company | 2 |
CVC
| Canadian National Railways | 3 |
DME
| Dakota, Minnesota and Eastern | 3 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DR
| Dardanelle and Russellville Railroad Inc | 1 |
DRG
| DRG | 1 |
DRGW
| Denver & Rio Grande Western | 5 |
DWC
| Canadian National Railways | 16 |
DWP
| Duluth Winnipeg & Pacific | 1 |
EEC
| East Erie Commercial Railroad | 22 |
EL
| Erie Lackawanna | 1 |
FBOX
| TTX Company | 42 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 9 |
FCP
| Ferrocarril Del Pacifico | 1 |
FCRD
| First Coast Railway | 5 |
FP
| Fordyce & Princeton Railroad Company | 4 |
FRDN
| H and S Railroad Company Incorporated | 1 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
FSR
| Fort Smith Railroad Company | 1 |
FSRR
| FerroSur | 7 |
FURX
| First Union Rail | 1 |
FXE
| Ferromex | 18 |
GACX
| General American Marks Company | 1 |
GBW
| Green Bay & Western | 1 |
GMRC
| Green Mountain RR | 7 |
GMSR
| Kansas City Southern | 1 |
GN
| Great Northern | 1 |
GNRR
| Georgia Northeastern | 4 |
GNWR
| Genesee and Wyoming Railroad Company | 11 |
GTRA
| Golden Triangle Railroad | 5 |
GTW
| Grand Trunk Western | 25 |
GVSR
| Galveston Railroad L.P. | 11 |
HESR
| Huron and Eastern | 1 |
HLMX
| Helm Financial Corporation | 2 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 15 |
IANR
| Iowa Northern Ry | 7 |
IARX
| InStar Leasing | 1 |
IATR
| Iowa Traction Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 7 |
IC
| Illinois Central | 12 |
ICG
| Illinois Central Gulf | 6 |
IFRX
| Infinity Rail LLC | 1 |
ITFX
| INFINITY TRANSPORTATION III LLC | 2 |
ITLX
| General Electric Rail Services | 1 |
KCS
| Kansas City Southern | 149 |
KCSM
| Kansas City Southern De Mexico | 20 |
KRR
| Kiamichi | 1 |
KYLE
| Kyle Railroad | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LNAC
| Chattahoochee Bay Railroad, LLC | 1 |
LOVX
| American Colloid Company | 2 |
LRS
| Laurinburg and Southern | 73 |
LRWN
| Little Rock & Western | 16 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
LVRC
| Lamoille Valley | 1 |
LW
| Louisville and Wadley Railway Company | 15 |
MB
| Meridian & Bigbee | 1 |
MCSA
| Moscow Camden and San Augustine Railroad | 1 |
MDR
| Kansas City Southern | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 1 |
MET
| Modesto and Empire Traction Company | 1 |
MILW
| Milwaukee Road | 1 |
MISX
| Milwaukee Solvents and Chemicals Corporation | 13 |
MKT
| Missouri-Kansas-Texas | 5 |
MNA
| Missouri and Northern Arkansas | 1 |
MP
| Missouri Pacific | 124 |
MR
| McCloud Railway Company | 8 |
MRL
| Montana Rail Link | 1 |
MRS
| Manufacturers Railway | 1 |
MSRC
| Kansas City Southern | 1 |
MSTL
| Minneapolis & St Louis | 1 |
MTNR
| Mississippi Tennessee Railroad LLC | 86 |
MWCX
| Midwest Railcar Corporation | 2 |
NADX
| General Electric Rail Services | 2 |
NAR
| Northern Alberta Railways | 2 |
NCNG
| NCNG | 1 |
NDYX
| First Union Rail | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 22 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 2 |
NOKL
| Northwestern Oklahoma | 130 |
NOPB
| New Orleans Public Belt Railroad | 2 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 102 |
NW
| Norfolk & Western | 4 |
NYC
| New York Central | 14 |
OAR
| Old Augusta Railroad | 11 |
PAL
| Paducah & Louisville | 1 |
PC
| Penn Central | 1 |
PMRX
| Progress Metal Reclamation Company | 3 |
PRR
| Pennsylvania Railroad | 2 |
QC
| Quebec Central | 3 |
RBOX
| Railbox Company | 124 |
RDG
| Reading Railroad | 1 |
RGCX
| Rio Grande Chemical LTD | 13 |
RI
| RI | 2 |
RJCD
| RJCD | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 3 |
RMMX
| Andersons - Railgroup | 1 |
RVPR
| Riverport R.R., L.L.C. | 1 |
RVSC
| Rio Valley Switching Company | 57 |
SCFX
| SCFX | 1 |
SCL
| Seaboard Coast Line | 2 |
SFRB
| Santa Fe | 9 |
SFS
| Santa Fe Southern | 1 |
SLC
| San Luis Central Railroad Company | 1 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 3 |
SLSF
| Saint Louis-San Francisco | 1 |
SM
| St. Marys Railroad | 4 |
SMW
| St Marys Railway West LLC | 9 |
SN
| Sacramento Northern | 4 |
SNC
| Saratoga & North Creek Railway | 2 |
SO
| South Orient | 1 |
SOO
| Soo Line | 5 |
SOU
| Southern | 68 |
SOXX
| SMBC RAIL SERVICES LLC | 3 |
SP
| Southern Pacific | 78 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SRN
| Sabine River & Northern | 128 |
SRY
| Southern Railway of British Columbia Lim | 8 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 46 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 199 |
TCAX
| General Electric Rail Services | 1 |
TCWR
| Twin Cities and Western | 1 |
TFM
| Kansas City Southern De Mexico | 18 |
TILX
| Trinity Industries Leasing Company | 7 |
TIMX
| Trinity Industries Leasing Company | 12 |
TM
| Texas-Mexican | 9 |
TMMW
| Texas-Mexican MofW | 5 |
TOBX
| TTX Company - Box Cars | 13 |
TOE
| Texas Oklahoma and Eastern RR Company | 66 |
TOFX
| TTX Company - Box Cars | 13 |
TR
| Tomahawk Railway L.P. | 51 |
TSBY
| Great Lakes Central Railroad | 1 |
TSE
| Texas South-Eastern Railroad Company | 4 |
UCRY
| Utah Central | 8 |
UP
| Union Pacific Railroad Company | 92 |
VCBX
| VCBX | 1 |
VCY
| Galveston Railroad, L.P. | 1 |
WA
| Washington & Atlanta Railroad | 1 |
WC
| Wisconsin Central | 21 |
WCCL
| Wisconsin Central | 5 |
WCTR
| WCTU Company White City Terminal Railway | 3 |
WLO
| Waterloo Railway Company (Illinois Central) | 6 |
WP
| Western Pacific | 120 |
WPMW
| Union Pacific Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 41 |
WSOR
| Wisconsin & Southern | 14 |
YKR
| York Rail | 7 |