ABOX
| TTX Company | 14 |
AGR
| Alabama and Gulf Coast | 116 |
ALM
| Arkansas Louisiana and Mississippi Railr | 7 |
ANR
| Angelina and Neches River Railroad | 3 |
AOK
| Arkansas-Oklahoma Railroad | 12 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 49 |
BAEX
| Andersons | 3 |
BAYL
| Bay Line, LLC | 9 |
BCLR
| Bay Colony | 1 |
BCOL
| Canadian National Railways | 2 |
BKTY
| Union Pacific Railroad Company | 104 |
BNSF
| BNSF Railway | 5 |
BO
| Baltimore & Ohio | 1 |
BR
| Buffalo and Pittsburgh | 1 |
CAGY
| Columbus & Greenville Railway | 2 |
CAIX
| CAI Rail Inc. | 9 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 3 |
CIBX
| CIT Group/Capital Finance, Inc | 1 |
CIC
| Cedar Rapids & Iowa City | 2 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CLSX
| Cargill Incorporated Salt Division | 1 |
CMHX
| CarMath Incorporated | 3 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 17 |
CNA
| Canadian National Railways | 9 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 5 |
COER
| Crab Orchard & Egyptian | 12 |
CP
| Canadian Pacific Railway | 40 |
CPAA
| Canadian Pacific Railway | 14 |
CR
| Conrail | 11 |
CSX
| CSX Railroad | 278 |
CTR
| Clinton Terminal Railroad Company | 2 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 9 |
FCRD
| First Coast Railway | 3 |
FGER
| Fruit Growers Express Company | 1 |
FGLK
| Finger Lakes Railway | 6 |
GACX
| General American Marks Company | 2 |
GMRC
| Green Mountain RR | 4 |
GNRR
| Georgia Northeastern | 1 |
GTRA
| Golden Triangle Railroad | 15 |
GTW
| Grand Trunk Western | 3 |
GVSR
| Galveston Railroad L.P. | 1 |
HESR
| Huron and Eastern | 1 |
HPJX
| Helm-Pacific Leasing | 3 |
HS
| H and S Railroad Company | 21 |
IANR
| Iowa Northern Ry | 21 |
IATR
| Iowa Traction Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 2 |
ICG
| Illinois Central Gulf | 2 |
IOCR
| Indiana and Ohio Central Railroad | 8 |
KCS
| Kansas City Southern | 35 |
KCSM
| Kansas City Southern De Mexico | 1 |
KRR
| Kiamichi | 5 |
LRS
| Laurinburg and Southern | 16 |
LVRR
| Lycoming Valley | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MB
| Meridian & Bigbee | 3 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 4 |
MQT
| Marquette Rail | 14 |
MR
| McCloud Railway Company | 2 |
MSDR
| Knoxville & Holston River Railroad | 5 |
MWCX
| Midwest Railcar Corporation | 3 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 4 |
NOKL
| Northwestern Oklahoma | 13 |
NRI
| Nebkota Railway Incorporated | 1 |
NS
| Norfolk Southern | 90 |
NW
| Norfolk & Western | 6 |
NYC
| New York Central | 51 |
OAR
| Old Augusta Railroad | 2 |
OHPA
| Ohio and Pennsylvania Railroad Company | 1 |
PAL
| Paducah & Louisville | 1 |
PDRR
| Pee Dee River RR | 3 |
PHD
| Port Huron and Detroit Railroad Company | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PMRX
| Progress Metal Reclamation Company | 3 |
QC
| Quebec Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 3 |
RBOX
| Railbox Company | 4 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 6 |
RMMX
| Andersons - Railgroup | 1 |
RPMX
| RPMG INC | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SMW
| St Marys Railway West LLC | 1 |
SNC
| Saratoga & North Creek Railway | 1 |
SOU
| Southern | 67 |
SP
| Southern Pacific | 4 |
SRN
| Sabine River & Northern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TFM
| Kansas City Southern De Mexico | 3 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 5 |
WCCL
| Wisconsin Central | 1 |
WFRX
| WELLS FARGO RAIL CORPORATION | 1 |
WP
| Western Pacific | 1 |
WRWK
| Providence & Worchester Railroad | 4 |
YVRR
| Yadkin Valley | 3 |