Lot 273
Sikorsky, Igor Ivan (1889-1972 Aviation pioneer; designed the first four-engine fixed-wing aircraft and the first successful helicopter. Typed Letter Signed "I.I. Sikorsky" on Sikorsky Aircraft letterhead, 1 p, 11x8½", Bridgeport, Connecticut, 19 July 1956. To "Lester," congratulating him on 40 years of service to Aviation and referring to himself as "another old timer…."
Estimated Value $150 - 200.
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