Pioneer aviation engineer (1889–1972) who developed the first four-engine airplane and the first modern helicopter to be put into widespread use. Signed book: First Wings Club Sight Lecture: Recollections and Thoughts of a Pioneer. First edition, first printing. NY, 1964. Hardcover, 6.5 x 9.5, 38 pages. Signed and inscribed in blue ballpoint on the reverse of the title page, “To Mr. Andrew Foder, With kindest personal regards of I. Sikorsky, July 24, 1965.” In fine condition, with light scuffing to the boards and a tiny tear along the top front joint. RRAuction COA.
