Helicopter Man : Igor Sikorsky And His Amazing Invention—Wyckoff, Edwin Brit. 2010 Juvenile Book | 629.130092 s579 zw items: 5 | circs: 118 | last circ: 5/2022 juvenile literature sikorsky igor ivan 1889 1972,sikorsky igor ivan 1889 1972 juvenile litera… https://cincinnatilibrary.bibliocommons.com/v2/record/S170C2704553