ABOX
| TTX Company | 5 |
AGR
| Alabama and Gulf Coast | 5 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AMC
| Arkansas Louisiana and Mississippi Railr | 1 |
ANR
| Angelina and Neches River Railroad | 15 |
AOK
| Arkansas-Oklahoma Railroad | 17 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 22 |
BB
| Buckingham Branch | 3 |
BCOL
| Canadian National Railways | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 13 |
BR
| Buffalo and Pittsburgh | 1 |
CCR
| Corinth & Counce | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CN
| Canadian National Railways | 14 |
CNA
| Canadian National Railways | 19 |
CNIS
| Canadian National Railways | 9 |
CP
| Canadian Pacific Railway | 11 |
CR
| Conrail | 7 |
CRLE
| Coe Rail Incorporated | 2 |
CSG
| CSG | 1 |
CSX
| CSX Railroad | 57 |
CVC
| Canadian National Railways | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DODX
| Department Of Defense | 4 |
EEC
| East Erie Commercial Railroad | 12 |
FBOX
| TTX Company | 13 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 1 |
FCRD
| First Coast Railway | 1 |
FSRR
| FerroSur | 1 |
GMRC
| Green Mountain RR | 2 |
GMSR
| Kansas City Southern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 2 |
GTRA
| Golden Triangle Railroad | 4 |
GTW
| Grand Trunk Western | 8 |
GVSR
| Galveston Railroad L.P. | 1 |
HPJX
| Helm-Pacific Leasing | 3 |
HS
| H and S Railroad Company | 13 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 7 |
ICG
| Illinois Central Gulf | 2 |
KCS
| Kansas City Southern | 55 |
LC
| Lancaster & Chester | 1 |
LW
| Louisville and Wadley Railway Company | 7 |
MDR
| Kansas City Southern | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 3 |
MEC
| Maine Central | 3 |
MILW
| Milwaukee Road | 1 |
MP
| Missouri Pacific | 1 |
MQT
| Marquette Rail | 4 |
MSDR
| Knoxville & Holston River Railroad | 2 |
MSRC
| Kansas City Southern | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 2 |
NOKL
| Northwestern Oklahoma | 7 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 139 |
NW
| Norfolk & Western | 6 |
NYC
| New York Central | 1 |
POHC
| Pittsburgh & Ohio Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 28 |
SBD
| Seaboard System | 1 |
SLC
| San Luis Central Railroad Company | 2 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SM
| St. Marys Railroad | 1 |
SOU
| Southern | 74 |
SP
| Southern Pacific | 3 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 34 |
TOE
| Texas Oklahoma and Eastern RR Company | 4 |
TR
| Tomahawk Railway L.P. | 12 |
UP
| Union Pacific Railroad Company | 4 |
VR
| Valdosta Railway | 7 |
WC
| Wisconsin Central | 24 |
WCCL
| Wisconsin Central | 6 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 12 |
YKR
| York Rail | 2 |