The Story of the Winged-S: Late Developments and Recent Photographs of the Helicopter.

First edition, early printing of the autobiography of the Russian-American aviation pioneer and designer of the first viable American helicopter. Octavo, original cloth, frontispiece, illustrated with black and white photographs. Presentation copy, inscribed by the author on the front free endpaper, "To Jack Sloane with kindest personal regards of I. Sikorsky Jan 25 1963." Very good in a very good dust jacket.