Inventor William E. Blain of New London, Conn. tests a physical Man-Powered Onathopter, having Five-Foot wings with a spread of 22 feet, February 1, 1932. (AP Photo)
Inventor William E. Blain of New London, Conn. tests a physical Man-Powered Onathopter, having Five-Foot wings with a spread of 22 feet, February 1, 1932. (AP Photo)