ALAB
| Alabama Railroad | 2 |
AM
| Arkansas & Missouri | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 2 |
BAEX
| Andersons | 2 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 1 |
CAGY
| Columbus & Greenville Railway | 4 |
CCR
| Corinth & Counce | 2 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 5 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 11 |
CUOH
| Columbus and Ohio River Railroad Company | 3 |
DODX
| Department Of Defense | 1 |
GTW
| Grand Trunk Western | 1 |
GVSR
| Galveston Railroad L.P. | 2 |
IATR
| Iowa Traction Railroad Company | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 1 |
KELX
| Kellogg Company | 1 |
LN
| Louisville & Nashville | 2 |
LNAC
| Chattahoochee Bay Railroad, LLC | 4 |
MNS
| Minneapolis Northfield & Southern | 1 |
MRL
| Montana Rail Link | 2 |
MRS
| Manufacturers Railway | 1 |
MSDR
| Knoxville & Holston River Railroad | 2 |
MSE
| Mississippi Export Railroad Company | 1 |
NCTR
| North Central Texas Railroad | 1 |
NECR
| New England Central | 1 |
NH
| New Haven | 1 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 1 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 1 |
OAR
| Old Augusta Railroad | 1 |
PAL
| Paducah & Louisville | 1 |
QC
| Quebec Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
QOCX
| Quaker Oats Company | 3 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
ROCK
| Rock Island | 1 |
SBD
| Seaboard System | 5 |
SCL
| Seaboard Coast Line | 2 |
SCRF
| South Carolina Central | 1 |
SFLC
| BNSF Railway | 1 |
SIND
| Southern Indiana Railway Incorporated | 1 |
SIRX
| Southern Illinois Railcar Company | 2 |
SLGG
| Progress Rail Services Corporation | 2 |
SLR
| St Lawrence & Atlantic | 1 |
SOU
| Southern | 1 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
SVRR
| Shamokin Valley Railroad Company | 2 |
UP
| Union Pacific Railroad Company | 4 |
USLX
| General Electric Rail Services | 1 |
WC
| Wisconsin Central | 1 |
WE
| Wheeling & Lake Erie | 1 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 1 |
WSOR
| Wisconsin & Southern | 1 |