ABOX
| TTX Company | 7 |
ACL
| Atlantic Coast Line | 1 |
ADN
| Ashley Drew & Northern | 2 |
AG
| Galveston Railroad L.P. | 1 |
AGR
| Alabama and Gulf Coast | 2 |
ALM
| Arkansas Louisiana and Mississippi Railr | 12 |
AM
| Arkansas & Missouri | 1 |
AMTK
| Amtrak | 23 |
AN
| Apalachicola Northern | 4 |
ANR
| Angelina and Neches River Railroad | 2 |
AOK
| Arkansas-Oklahoma Railroad | 47 |
ARR
| Alaska Railroad | 1 |
ASAB
| Bay Line Railroad LLC | 7 |
ATSF
| Atchison Topeka & Santa Fe | 33 |
ATW
| Atlantic and Western | 29 |
BAEX
| Andersons | 4 |
BAR
| Bangor & Aroostook | 4 |
BCOL
| Canadian National Railways | 11 |
BM
| Boston & Maine | 2 |
BN
| Burlington Northern | 25 |
BNSF
| BNSF Railway | 120 |
BO
| Baltimore & Ohio | 1 |
CAGY
| Columbus & Greenville Railway | 7 |
CBQ
| Chicago Burlington & Quincy | 3 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CEMX
| Cemex Mexico SA de CV | 2 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CIC
| Cedar Rapids & Iowa City | 1 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CKIX
| C.K. Industries | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CLP
| Clarendon and Pittsford | 1 |
CMHX
| CarMath Incorporated | 20 |
CN
| Canadian National Railways | 23 |
CNA
| Canadian National Railways | 66 |
CNIS
| Canadian National Railways | 5 |
CNW
| Chicago & Northwestern | 20 |
CO
| Chesapeake & Ohio | 3 |
COER
| Crab Orchard & Egyptian | 5 |
COP
| City of Prineville Railway | 1 |
CP
| Canadian Pacific Railway | 18 |
CPAA
| Canadian Pacific Railway | 5 |
CR
| Conrail | 16 |
CRLE
| Coe Rail Incorporated | 6 |
CSX
| CSX Railroad | 30 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
CVC
| Canadian National Railways | 1 |
DH
| Delaware & Hudson | 2 |
DJTX
| Joseph Transportation Incorporated | 1 |
DME
| Dakota, Minnesota and Eastern | 13 |
DMM
| Dansville and Mount Morris Railroad Comp | 3 |
DR
| Dardanelle and Russellville Railroad Inc | 7 |
DRGW
| Denver & Rio Grande Western | 12 |
DTI
| Detroit Toledo & Ironton | 1 |
DWC
| Canadian National Railways | 16 |
EEC
| East Erie Commercial Railroad | 40 |
EL
| Erie Lackawanna | 1 |
ERIE
| Erie Railroad | 2 |
FBOX
| TTX Company | 22 |
FGER
| Fruit Growers Express Company | 1 |
FP
| Fordyce & Princeton Railroad Company | 5 |
FSRR
| FerroSur | 6 |
FXE
| Ferromex | 8 |
GACX
| General American Marks Company | 1 |
GBW
| Green Bay & Western | 2 |
GMO
| Gulf Mobile & Ohio | 2 |
GMRC
| Green Mountain RR | 1 |
GMSR
| Kansas City Southern | 1 |
GN
| Great Northern | 8 |
GNRR
| Georgia Northeastern | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 14 |
GTRA
| Golden Triangle Railroad | 9 |
GTW
| Grand Trunk Western | 100 |
GVSR
| Galveston Railroad L.P. | 2 |
HDTX
| Huish Detergents, Inc | 2 |
HLMX
| Helm Financial Corporation | 4 |
HPJX
| Helm-Pacific Leasing | 3 |
HS
| H and S Railroad Company | 36 |
IATR
| Iowa Traction Railroad Company | 3 |
IBT
| International Bridge and Terminal Company | 13 |
IC
| Illinois Central | 21 |
ICG
| Illinois Central Gulf | 28 |
IFRX
| Infinity Rail LLC | 1 |
ITC
| Illinois Terminal Railroad | 1 |
KCS
| Kansas City Southern | 87 |
KCSM
| Kansas City Southern De Mexico | 1 |
KELX
| Kellogg Company | 1 |
KRR
| Kiamichi | 4 |
LFCD
| Linea Coahuila Durango S.A. de C.V. | 5 |
LN
| Louisville & Nashville | 1 |
LNAC
| Chattahoochee Bay Railroad, LLC | 1 |
LNW
| Louisiana & Northwestern | 2 |
LOAM
| Lousiana Midland | 1 |
LRS
| Laurinburg and Southern | 8 |
LV
| Lehigh Valley | 3 |
LW
| Louisville and Wadley Railway Company | 8 |
MDW
| Minnesota Dakota and Western Railway Com | 3 |
MEC
| Maine Central | 2 |
MET
| Modesto and Empire Traction Company | 4 |
MILW
| Milwaukee Road | 1 |
MNA
| Missouri and Northern Arkansas | 1 |
MNNR
| Minnesota Commercial | 13 |
MP
| Missouri Pacific | 16 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
MR
| McCloud Railway Company | 3 |
MRL
| Montana Rail Link | 6 |
MSRC
| Kansas City Southern | 3 |
MWCX
| Midwest Railcar Corporation | 2 |
NADX
| General Electric Rail Services | 2 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 16 |
NKP
| Nickel Plate | 1 |
NOKL
| Northwestern Oklahoma | 41 |
NOPB
| New Orleans Public Belt Railroad | 2 |
NP
| Northern Pacific | 5 |
NRLX
| CIT Group/Capital Finance, Inc | 2 |
NS
| Norfolk Southern | 21 |
NSHR
| North Shore | 1 |
NW
| Norfolk & Western | 14 |
NWR
| Nashville & Western Railroad Corp. | 1 |
NYC
| New York Central | 10 |
PC
| Penn Central | 7 |
PE
| Peoria & Eastern | 1 |
PHD
| Port Huron and Detroit Railroad Company | 3 |
PICK
| Pickens Railway | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PLTX
| Potlatch Corporation | 2 |
PRR
| Pennsylvania Railroad | 2 |
PW
| Providence and Worcester | 1 |
QC
| Quebec Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 36 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RGCX
| Rio Grande Chemical LTD | 2 |
RMMX
| Andersons - Railgroup | 2 |
ROCK
| Rock Island | 1 |
SAL
| Seaboard Air Line | 2 |
SAN
| Sandersville | 1 |
SBD
| Seaboard System | 3 |
SCL
| Seaboard Coast Line | 1 |
SGLR
| Seminole Gulf | 2 |
SLC
| San Luis Central Railroad Company | 4 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 5 |
SLSF
| Saint Louis-San Francisco | 5 |
SOO
| Soo Line | 6 |
SOU
| Southern | 39 |
SP
| Southern Pacific | 53 |
SPS
| Spokane Portland & Seattle | 7 |
SRN
| Sabine River & Northern | 49 |
SRY
| Southern Railway of British Columbia Lim | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 45 |
TASD
| Terminal Alabama State Docks | 3 |
TBOX
| TTX Company | 52 |
TCWR
| Twin Cities and Western | 6 |
TFM
| Kansas City Southern De Mexico | 9 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 24 |
TR
| Tomahawk Railway L.P. | 27 |
TSE
| Texas South-Eastern Railroad Company | 7 |
UP
| Union Pacific Railroad Company | 32 |
WAB
| Wabash | 2 |
WC
| Wisconsin Central | 13 |
WCCL
| Wisconsin Central | 3 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WCTR
| WCTU Company White City Terminal Railway | 2 |
WLO
| Waterloo Railway Company (Illinois Central) | 6 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 17 |
WRWK
| Providence & Worchester Railroad | 3 |
WSOR
| Wisconsin & Southern | 1 |
YKR
| York Rail | 1 |