AGR
| Alabama and Gulf Coast | 6 |
AOK
| Arkansas-Oklahoma Railroad | 6 |
ATW
| Atlantic and Western | 1 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 2 |
BNSF
| BNSF Railway | 7 |
BR
| Buffalo and Pittsburgh | 1 |
CN
| Canadian National Railways | 7 |
CNA
| Canadian National Railways | 12 |
CNIS
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 5 |
COER
| Crab Orchard & Egyptian | 2 |
CP
| Canadian Pacific Railway | 28 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 4 |
CV
| Central Vermont | 1 |
CVC
| Canadian National Railways | 7 |
DWC
| Canadian National Railways | 9 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FBOX
| TTX Company | 7 |
GBW
| Green Bay & Western | 3 |
GTW
| Grand Trunk Western | 6 |
GVSR
| Galveston Railroad L.P. | 1 |
HCGX
| COMPASS MINERALS INTERNATIONAL INC | 2 |
HPJX
| Helm-Pacific Leasing | 4 |
HS
| H and S Railroad Company | 4 |
IANR
| Iowa Northern Ry | 1 |
KCS
| Kansas City Southern | 3 |
LW
| Louisville and Wadley Railway Company | 3 |
MEC
| Maine Central | 1 |
MILW
| Milwaukee Road | 7 |
MP
| Missouri Pacific | 3 |
MRL
| Montana Rail Link | 1 |
MSDR
| Knoxville & Holston River Railroad | 7 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 5 |
NSHR
| North Shore | 1 |
NVRR
| NAPA Valley Railroad Company | 1 |
NW
| Norfolk & Western | 2 |
PGR
| Progressive Rail, Inc | 1 |
PREX
| Pioneer Rail Equipment | 4 |
PSMX
| Esco Corporation | 2 |
QGRY
| Quebec Gatineau Railway Incorporated | 5 |
RBOX
| Railbox Company | 11 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 4 |
SNC
| Saratoga & North Creek Railway | 1 |
SP
| Southern Pacific | 5 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 19 |
TR
| Tomahawk Railway L.P. | 2 |
WC
| Wisconsin Central | 19 |
WCCL
| Wisconsin Central | 2 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WSOR
| Wisconsin & Southern | 11 |