The Keystone K-78 Patrician was an airliner developed in the United States in the late 1920s built only in prototype form. It was a high-wing strut-braced monoplane following the then-standard trimotor layout and was intended to be the largest and fastest aircraft of its type. The fuselage was constructed from a chromoly tube framework with aluminum longerons and bulkheads all skinned in fabric.
Made by Keystone Aircraft.