AGR
| Alabama and Gulf Coast | 4 |
ALM
| Arkansas Louisiana and Mississippi Railr | 5 |
ALY
| Allegheny and Eastern Railroad Incorpora | 1 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 6 |
ASAB
| Bay Line Railroad LLC | 8 |
ATSF
| Atchison Topeka & Santa Fe | 90 |
ATW
| Atlantic and Western | 7 |
BAEX
| Andersons | 1 |
BAR
| Bangor & Aroostook | 16 |
BAYL
| Bay Line, LLC | 2 |
BCOL
| Canadian National Railways | 10 |
BM
| Boston & Maine | 4 |
BN
| Burlington Northern | 31 |
BNSF
| BNSF Railway | 18 |
BPRR
| Buffalo and Pittsburgh | 4 |
CBL
| Conemaugh and Black Lick Railroad | 2 |
CCR
| Corinth & Counce | 1 |
CGR
| CG Railway, Inc | 1 |
CHTT
| Chicago Heights Terminal Transfer | 4 |
CIC
| Cedar Rapids & Iowa City | 1 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CMHX
| CarMath Incorporated | 3 |
CN
| Canadian National Railways | 6 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 28 |
CP
| Canadian Pacific Railway | 65 |
CPAA
| Canadian Pacific Railway | 6 |
CR
| Conrail | 120 |
CSX
| CSX Railroad | 22 |
CUOH
| Columbus and Ohio River Railroad Company | 4 |
CVC
| Canadian National Railways | 4 |
DME
| Dakota, Minnesota and Eastern | 6 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DRGW
| Denver & Rio Grande Western | 11 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 3 |
FBOX
| TTX Company | 7 |
FP
| Fordyce & Princeton Railroad Company | 2 |
FXE
| Ferromex | 2 |
GACX
| General American Marks Company | 1 |
GMRC
| Green Mountain RR | 2 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 4 |
GTW
| Grand Trunk Western | 73 |
GVSR
| Galveston Railroad L.P. | 17 |
HATX
| Helm Financial Corporation | 1 |
HESR
| Huron and Eastern | 1 |
HLMX
| Helm Financial Corporation | 1 |
HPJX
| Helm-Pacific Leasing | 6 |
HS
| H and S Railroad Company | 12 |
IATR
| Iowa Traction Railroad Company | 4 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 10 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 18 |
KELX
| Kellogg Company | 14 |
KYLE
| Kyle Railroad | 2 |
LBR
| Lowville and Beaver River Railroad Compa | 3 |
LNAC
| Chattahoochee Bay Railroad, LLC | 7 |
LSRC
| Lake State Railway Company | 1 |
LW
| Louisville and Wadley Railway Company | 7 |
MB
| Meridian & Bigbee | 1 |
MCSA
| Moscow Camden and San Augustine Railroad | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 6 |
MEC
| Maine Central | 8 |
MET
| Modesto and Empire Traction Company | 2 |
MILW
| Milwaukee Road | 5 |
MMA
| Montreal, Maine & Atlantic | 33 |
MP
| Missouri Pacific | 53 |
MQT
| Marquette Rail | 5 |
MR
| McCloud Railway Company | 3 |
MRL
| Montana Rail Link | 3 |
MSDR
| Knoxville & Holston River Railroad | 3 |
MSRC
| Kansas City Southern | 2 |
MVRY
| Mahoning Valley Ry | 1 |
MWCX
| Midwest Railcar Corporation | 4 |
NOKL
| Northwestern Oklahoma | 4 |
NOPB
| New Orleans Public Belt Railroad | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 6 |
NS
| Norfolk Southern | 13 |
NSHR
| North Shore | 4 |
NW
| Norfolk & Western | 19 |
NYC
| New York Central | 21 |
ONT
| Ontario Northland Railway | 18 |
PAL
| Paducah & Louisville | 1 |
PRL
| Penn Eastern Rail Lines Incorporated | 1 |
PSMX
| Esco Corporation | 2 |
QC
| Quebec Central | 2 |
QGRY
| Quebec Gatineau Railway Incorporated | 5 |
RBOX
| Railbox Company | 2 |
SLC
| San Luis Central Railroad Company | 1 |
SLGG
| Progress Rail Services Corporation | 2 |
SLR
| St Lawrence & Atlantic | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOO
| Soo Line | 5 |
SOU
| Southern | 93 |
SP
| Southern Pacific | 40 |
SRN
| Sabine River & Northern | 1 |
SRY
| Southern Railway of British Columbia Lim | 2 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 6 |
SSW
| St Louis Southwestern (Cotton Belt) | 12 |
STE
| Stockton Terminal and Eastern RR | 1 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 11 |
TCWR
| Twin Cities and Western | 3 |
TFM
| Kansas City Southern De Mexico | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 6 |
TR
| Tomahawk Railway L.P. | 3 |
UP
| Union Pacific Railroad Company | 13 |
USLX
| General Electric Rail Services | 1 |
VCY
| Galveston Railroad, L.P. | 3 |
WC
| Wisconsin Central | 88 |
WCCL
| Wisconsin Central | 15 |
WCOR
| Wellsboro and Corning Railroad Company | 2 |
WE
| Wheeling & Lake Erie | 4 |
WLO
| Waterloo Railway Company (Illinois Central) | 5 |
WP
| Western Pacific | 6 |
WSOR
| Wisconsin & Southern | 2 |
WTRM
| Warren and Trumbull Railroad Company | 2 |
YARR
| Youngstown and Austintown Railroad | 11 |
YB
| Youngstown Belt Railroad Company | 8 |
YKR
| York Rail | 2 |