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hesham said:Hi,
Anther Lockheed SST early concept as 3 Mach aircraft
and some unknown SST concepts.
http://www.flightglobal.com/FlightPDFArchive/1959/1959%20-%200709.pdf
It's Convair designs.
http://archive.aviationweek.com/issue/19590202#!&pid=38