Captain Royal Leonard (1905-1962), a Texan pilot who previously flew for TWA, was, in 1935-1941, the personal pilot of Generalissimo Chiang Kai-shek[1][2].
In 1935 Leonard was first to fly the new Gee Bee Q.E.D. in the Bendix Race. Leonard was forced down with engine trouble at Wichita, Kansas.
In 1942, he published an autobiography called I flew for China[3].
In 2011, Barry S. Martin published a book: Forgotten Aviator: The Adventures of Royal Leonard. See www.bmartinauthor.com for details.