
Pitcairn, Harold F. The Auto Giro: Its Characteristics and Accomplishments . Washington, Smithsonian Institution, 1930. 8pp, 9 plates, 6x9.5", wrps. Reprint from Smithsonian Report 1930. Article by famous auto giro designer. Very good. (2)
Pitcairn, Harold F. The Auto Giro: Its Characteristics and Accomplishments . Washington, Smithsonian Institution, 1930. 8pp, 9 plates, 6x9.5", wrps. Reprint from Smithsonian Report 1930. Article by famous auto giro designer. Very good. (2)