[AVIATORS]. A group of 9 signatures and letters, comprising:

GATTY, Harold (1903-1957). Australian navigator. Signed airmail envelope (unflown and uncancelled). -- HEINRICH, Albert S. (1889-1974). American pioneer aviator. Autograph letter signed ("Albert Heinrich"), to William J. Witherspoon. 1 page, 8vo. -- MATTERN, Jimmie (1905-1988). American aviator. Signed airmail envelope, cancelled 9 August 1933. -- MITCHELL, William ("Billy"), Brigadier General (1879-1936). "Father" of the United States Air Force. Typed letter signed ("Wm. Mitchell"), on War Department stationery. To Admiral Fullam, 26 July 1921. -- OVINGTON, Earle (1879-1936). American aeronautical engineer. Signed airmail envelope, cancelled 23 September 1931, commemorating the twenty-year anniversary of the first airmail flight. -- PANGBORN, Clyde (1895-1958). "Upside-Down Pangborn," American aviator. Autograph letter signed ("Clyde E. Pangborn"), in pencil. To Lincoln Schuster, 6 May 1954, regarding the disposition of his manuscript "The Sky Was Our Home." [With:] Signature on postcard, stamped 22 January 1935; also with photographic postcard showing Pangborn and Hugh Herndon. -- RICKENBACKER, Eddie (1890-1973). American fighter ace. Typed letter signed ("Eddie Rickenbacker"), on Eastern Airlines stationery. To Luis St. Bernard, 15 July 1959, regarding a customer service issue. -- YEAGER, Chuck (b.1923). 8 x 10 in. color photograph signed and inscribed.

[AVIATORS]. A group of 9 signatures and letters, comprising: