Keywords: robert mitchell collection robertmitchellcollection robert mitchell robertmitchell nc12196 aviation aircraft airplane airlines airliners stinson aircraft stinsonaircraft stinson stinson model u stinsonmodelu model u modelu stinson trimotor stinsontrimotor trimotor lycoming engines lycomingengines lycoming lycoming r-680 lycomingr680 r-680 r680 r-680-ba r680ba people groupshot blackandwhite monochrome black and white Catalog Number: Mitchell012 Collection : Robert Mitchell Collection Repository : San Diego Air and Space Museum Archive Title : 12. âHitchikersâ Catalog Number: Mitchell012 Collection : Robert Mitchell Collection Repository : San Diego Air and Space Museum Archive Title : 12. âHitchikersâ |