AA
| Ann Arbor | 1 |
ABOX
| TTX Company | 3 |
ADN
| Ashley Drew & Northern | 4 |
AERC
| Albany and Eastern Railroad Company | 1 |
AGR
| Alabama and Gulf Coast | 2 |
ALAB
| Alabama Railroad | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 6 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 5 |
ARA
| Arcade and Attica Railroad Corporation | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 2 |
BAEX
| Andersons | 5 |
BAR
| Bangor & Aroostook | 6 |
BCOL
| Canadian National Railways | 9 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 8 |
BO
| Baltimore & Ohio | 1 |
BPRR
| Buffalo and Pittsburgh | 1 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CIC
| Cedar Rapids & Iowa City | 4 |
CIL
| Chicago Indianapolis & Louisville (Monon | 1 |
CMHX
| CarMath Incorporated | 7 |
CN
| Canadian National Railways | 5 |
CNA
| Canadian National Railways | 2 |
CNIS
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 17 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 5 |
CPAA
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 18 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
CVC
| Canadian National Railways | 3 |
DME
| Dakota, Minnesota and Eastern | 8 |
DMM
| Dansville and Mount Morris Railroad Comp | 2 |
DR
| Dardanelle and Russellville Railroad Inc | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
DTI
| Detroit Toledo & Ironton | 1 |
DWC
| Canadian National Railways | 24 |
EEC
| East Erie Commercial Railroad | 1 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FBOX
| TTX Company | 8 |
FGLK
| Finger Lakes Railway | 5 |
FLOX
| CIT Group/Capital Finance, Inc | 1 |
FSRR
| FerroSur | 1 |
FURX
| First Union Rail | 1 |
FXE
| Ferromex | 1 |
GACX
| General American Marks Company | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTW
| Grand Trunk Western | 3 |
HESR
| Huron and Eastern | 35 |
HLMX
| Helm Financial Corporation | 3 |
HPJX
| Helm-Pacific Leasing | 10 |
HS
| H and S Railroad Company | 9 |
IATR
| Iowa Traction Railroad Company | 9 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 6 |
ICG
| Illinois Central Gulf | 3 |
IFRX
| Infinity Rail LLC | 1 |
KCS
| Kansas City Southern | 8 |
KELX
| Kellogg Company | 14 |
KYLE
| Kyle Railroad | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LSRC
| Lake State Railway Company | 17 |
LW
| Louisville and Wadley Railway Company | 3 |
MCSA
| Moscow Camden and San Augustine Railroad | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 7 |
MEC
| Maine Central | 3 |
MILW
| Milwaukee Road | 2 |
MMA
| Montreal, Maine & Atlantic | 11 |
MMRR
| Mid-Michigan Railroad Incorporated | 1 |
MNNR
| Minnesota Commercial | 1 |
MP
| Missouri Pacific | 6 |
MQT
| Marquette Rail | 396 |
MRL
| Montana Rail Link | 1 |
MSDR
| Knoxville & Holston River Railroad | 4 |
MSIX
| Morton International Incorporated | 1 |
NADX
| General Electric Rail Services | 4 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 8 |
NS
| Norfolk Southern | 11 |
NYC
| New York Central | 4 |
OHPA
| Ohio and Pennsylvania Railroad Company | 1 |
ONT
| Ontario Northland Railway | 5 |
PDRR
| Pee Dee River RR | 1 |
PM
| Pere Marquette | 1 |
POHC
| Pittsburgh & Ohio Central | 1 |
PRR
| Pennsylvania Railroad | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 5 |
RBOX
| Railbox Company | 3 |
SLC
| San Luis Central Railroad Company | 5 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SLSF
| Saint Louis-San Francisco | 2 |
SOO
| Soo Line | 4 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 6 |
SRY
| Southern Railway of British Columbia Lim | 4 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TASD
| Terminal Alabama State Docks | 5 |
TBOX
| TTX Company | 8 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TR
| Tomahawk Railway L.P. | 2 |
TSBY
| Great Lakes Central Railroad | 1 |
WAB
| Wabash | 1 |
WC
| Wisconsin Central | 23 |
WCCL
| Wisconsin Central | 9 |
WLO
| Waterloo Railway Company (Illinois Central) | 4 |
WSOR
| Wisconsin & Southern | 6 |
YKR
| York Rail | 1 |