ABOX
| TTX Company | 32 |
AGR
| Alabama and Gulf Coast | 12 |
AKMD
| Arkansas Midland Railroad Company | 1 |
ALAB
| Alabama Railroad | 2 |
ALY
| Allegheny and Eastern Railroad Incorpora | 2 |
AMEX
| Allied Enterprises | 1 |
AMTK
| Amtrak | 3 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 21 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 7 |
BAEX
| Andersons | 16 |
BAYL
| Bay Line, LLC | 2 |
BCOL
| Canadian National Railways | 3 |
BKTY
| Union Pacific Railroad Company | 1 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 22 |
BO
| Baltimore & Ohio | 4 |
BPRR
| Buffalo and Pittsburgh | 1 |
CAIX
| CAI Rail Inc. | 1 |
CEFX
| CIT Group/Capital Finance, Inc | 2 |
CEMX
| Cemex Mexico SA de CV | 2 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CIRR
| Chattahoochee Industrial Railroad | 10 |
CN
| Canadian National Railways | 8 |
CNA
| Canadian National Railways | 20 |
CNIS
| Canadian National Railways | 5 |
CNW
| Chicago & Northwestern | 6 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 7 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 4 |
CRLE
| Coe Rail Incorporated | 18 |
CSX
| CSX Railroad | 571 |
CUOH
| Columbus and Ohio River Railroad Company | 2 |
CVC
| Canadian National Railways | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DWC
| Canadian National Railways | 4 |
EEC
| East Erie Commercial Railroad | 49 |
FBOX
| TTX Company | 60 |
FCRD
| First Coast Railway | 4 |
FGLK
| Finger Lakes Railway | 10 |
FRR
| Falls Road Railroad Company Incorporated | 2 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 4 |
GMRC
| Green Mountain RR | 5 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 8 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 4 |
GVSR
| Galveston Railroad L.P. | 6 |
HATX
| Helm Financial Corporation | 3 |
HCSX
| Helm Chesapeake LLP | 1 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 49 |
IANR
| Iowa Northern Ry | 1 |
IBT
| International Bridge and Terminal Company | 2 |
IFRX
| Infinity Rail LLC | 8 |
KCS
| Kansas City Southern | 26 |
KRR
| Kiamichi | 2 |
KWT
| KWT Railway | 1 |
LNAC
| Chattahoochee Bay Railroad, LLC | 1 |
LRWN
| Little Rock & Western | 2 |
LW
| Louisville and Wadley Railway Company | 13 |
MB
| Meridian & Bigbee | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 7 |
MEC
| Maine Central | 10 |
MP
| Missouri Pacific | 20 |
MQT
| Marquette Rail | 2 |
MR
| McCloud Railway Company | 2 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NOKL
| Northwestern Oklahoma | 16 |
NOPB
| New Orleans Public Belt Railroad | 1 |
NS
| Norfolk Southern | 59 |
NSHR
| North Shore | 1 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 3 |
PDRR
| Pee Dee River RR | 5 |
PGR
| Progressive Rail, Inc | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 7 |
RBOX
| Railbox Company | 91 |
RMMX
| Andersons - Railgroup | 1 |
SIND
| Southern Indiana Railway Incorporated | 1 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 6 |
SLSF
| Saint Louis-San Francisco | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 47 |
SP
| Southern Pacific | 51 |
SRN
| Sabine River & Northern | 22 |
SSW
| St Louis Southwestern (Cotton Belt) | 8 |
STE
| Stockton Terminal and Eastern RR | 3 |
TBOX
| TTX Company | 51 |
TFM
| Kansas City Southern De Mexico | 2 |
TOBX
| TTX Company - Box Cars | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TOFX
| TTX Company - Box Cars | 4 |
TR
| Tomahawk Railway L.P. | 9 |
TSE
| Texas South-Eastern Railroad Company | 40 |
UP
| Union Pacific Railroad Company | 17 |
VCY
| Galveston Railroad, L.P. | 1 |
WC
| Wisconsin Central | 11 |
WCOR
| Wellsboro and Corning Railroad Company | 2 |
WP
| Western Pacific | 10 |
WRWK
| Providence & Worchester Railroad | 3 |
YARR
| Youngstown and Austintown Railroad | 1 |
YB
| Youngstown Belt Railroad Company | 4 |