The story of the winged-S
Subtitle: with new material on the latest development of the helicopter ; an autobiography by Igor I. Sikorsky ; with many illustrations from the author's collection of photographs.
Publisher: Dodd, Mead & Company
Published: 1941
Place of publication: New York
Language: eng
Number of pages: 275
Subjects: Airplanes
Other titles: The winged-S.
Notes: Map on lining-papers.
"Published October 1938 ... Fourth printing November 1941."