AGR
| Alabama and Gulf Coast | 6 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ASAB
| Bay Line Railroad LLC | 7 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 5 |
BAR
| Bangor & Aroostook | 4 |
BAYL
| Bay Line, LLC | 1 |
BCIT
| Canadian National Railways | 1 |
BCOL
| Canadian National Railways | 22 |
BM
| Boston & Maine | 5 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 4 |
BPRR
| Buffalo and Pittsburgh | 4 |
BR
| Buffalo and Pittsburgh | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 15 |
CNA
| Canadian National Railways | 35 |
CNIS
| Canadian National Railways | 3 |
CP
| Canadian Pacific Railway | 9 |
CPAA
| Canadian Pacific Railway | 3 |
CR
| Conrail | 4 |
CRLE
| Coe Rail Incorporated | 3 |
CSX
| CSX Railroad | 21 |
CTRR
| Cloquet Terminal Railroad Company | 1 |
CUON
| CUON | 1 |
CV
| Central Vermont | 3 |
CVC
| Canadian National Railways | 11 |
DTI
| Detroit Toledo & Ironton | 1 |
DWC
| Canadian National Railways | 19 |
DWP
| Duluth Winnipeg & Pacific | 1 |
EEC
| East Erie Commercial Railroad | 5 |
FBOX
| TTX Company | 1 |
FGLK
| Finger Lakes Railway | 2 |
GMRC
| Green Mountain RR | 7 |
GNRR
| Georgia Northeastern | 6 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTRA
| Golden Triangle Railroad | 2 |
GTW
| Grand Trunk Western | 16 |
GVSR
| Galveston Railroad L.P. | 1 |
HCSX
| Helm Chesapeake LLP | 3 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 5 |
IATR
| Iowa Traction Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 11 |
IC
| Illinois Central | 9 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 5 |
KWT
| KWT Railway | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LRWN
| Little Rock & Western | 1 |
LW
| Louisville and Wadley Railway Company | 13 |
MB
| Meridian & Bigbee | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 4 |
MEC
| Maine Central | 16 |
MILW
| Milwaukee Road | 1 |
MM
| MM | 1 |
MMA
| Montreal, Maine & Atlantic | 10 |
MNNR
| Minnesota Commercial | 1 |
MP
| Missouri Pacific | 6 |
MRL
| Montana Rail Link | 3 |
MSDR
| Knoxville & Holston River Railroad | 5 |
MWCX
| Midwest Railcar Corporation | 1 |
NAR
| Northern Alberta Railways | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 15 |
NW
| Norfolk & Western | 8 |
NYC
| New York Central | 4 |
ONT
| Ontario Northland Railway | 13 |
ONY
| ONY | 1 |
QC
| Quebec Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 6 |
RBOX
| Railbox Company | 5 |
RRRI
| RRRI | 1 |
SGLR
| Seminole Gulf | 1 |
SLC
| San Luis Central Railroad Company | 4 |
SLGG
| Progress Rail Services Corporation | 6 |
SLR
| St Lawrence & Atlantic | 13 |
SO
| South Orient | 1 |
SOU
| Southern | 20 |
SP
| Southern Pacific | 12 |
SRN
| Sabine River & Northern | 1 |
SRY
| Southern Railway of British Columbia Lim | 3 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
TASD
| Terminal Alabama State Docks | 3 |
TBOX
| TTX Company | 7 |
TFM
| Kansas City Southern De Mexico | 1 |
TR
| Tomahawk Railway L.P. | 1 |
TSRD
| Twin State Railroad Company | 5 |
UP
| Union Pacific Railroad Company | 7 |
VCY
| Galveston Railroad, L.P. | 1 |
WC
| Wisconsin Central | 18 |
WCCL
| Wisconsin Central | 5 |
WLO
| Waterloo Railway Company (Illinois Central) | 7 |
WPYR
| White Pass & Yukon Route | 1 |
YARR
| Youngstown and Austintown Railroad | 2 |
YKR
| York Rail | 5 |