This is "A Description of the Manly Engine" reprinted in 1942 from the Langley Memoir on Mechanical Flight, originally issued by the Smithsonian Institution in 1911. This oversize book features a biography of aviation engineering pioneer Charles Manly, with the 1911 text, photos and technical drawings of Manly's early work with Samuel Langley. Condition of this oversize book is Near Fine Minus, showing a previous owner's name and an inked-out price on the RFEP. No dust jacket, as issued. Please see my other aviation listings.