Aviation pioneer (1905-1979), holder of numerous aviation records, and the first woman to win the Bendix Trophy. Blue ballpoint signature and inscription: “To Harry Block from Louise Thaden. Winner 1936 Bendix Trophy Race from Floyd Bennett airport, Long Island, New York to Nat’l Air Races field, Los Angeles, California; August. Aircraft a ‘Stagger Winger’ Bucharest D175 with Wright Whirlwind 420 h.p. At High Point, N.C. /10/65.” In fine condition, with some faint areas of toning. RRAuction COA.