AERC
| Albany and Eastern Railroad Company | 2 |
AGR
| Alabama and Gulf Coast | 3 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATW
| Atlantic and Western | 2 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 1 |
BM
| Boston & Maine | 2 |
BNSF
| BNSF Railway | 2 |
BR
| Buffalo and Pittsburgh | 1 |
CGR
| CG Railway, Inc | 7 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CN
| Canadian National Railways | 8 |
CNA
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 2 |
CP
| Canadian Pacific Railway | 3 |
CRLE
| Coe Rail Incorporated | 4 |
CSX
| CSX Railroad | 14 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
CVC
| Canadian National Railways | 2 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 3 |
FBOX
| TTX Company | 1 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 1 |
FCRD
| First Coast Railway | 4 |
FLOX
| CIT Group/Capital Finance, Inc | 1 |
GMRC
| Green Mountain RR | 6 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
HS
| H and S Railroad Company | 3 |
IBT
| International Bridge and Terminal Company | 2 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 2 |
MEC
| Maine Central | 13 |
MMA
| Montreal, Maine & Atlantic | 1 |
MSDR
| Knoxville & Holston River Railroad | 2 |
NECR
| New England Central | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NYC
| New York Central | 2 |
PDRR
| Pee Dee River RR | 1 |
PVRR
| Pioneer Valley Railroad Company Incorporated | 1 |
RBOX
| Railbox Company | 4 |
SLC
| San Luis Central Railroad Company | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SOO
| Soo Line | 1 |
SP
| Southern Pacific | 8 |
SRN
| Sabine River & Northern | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TBOX
| TTX Company | 7 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 1 |
VCY
| Galveston Railroad, L.P. | 1 |
WC
| Wisconsin Central | 3 |
YB
| Youngstown Belt Railroad Company | 1 |
YKR
| York Rail | 2 |