The Story of the Winged-S: New Chapters and Illustrations on Recent Developements of the Helicopter.

Later edition of the autobiography of the Russian-American aviation pioneer and designer of the first viable American helicopter. Octavo, original pictorial cloth, frontispiece, illustrated with black and white photographs many from the author's collection. Presentation copy, inscribed by the author on the front free endpaper, "To Dave Postle, With kindest personal regards of I. Sikorsky, Dec. 23, 1953." In very good condition, with toning to the edges, sunning to the spine and edges of the panels, and a small tear to the crown of the spine.