The Autogiro is one of those good ideas which never seems to have quite ‘made it’; whilst some individuals continue to work on the idea, its heyday was really pre WW11 and the development of the helicopter. The author takes the definition of Autogiro to include craft with powered rotors for take-off, and he has produced a very weighty book on the subject, with considerable technical meat. He describes both the history of the concept and its development, as well as illustrating private and amateur built autogiros, an index of designers & makers and details, dimensions and three-view line drawings of a selection of these fascinating machines. 328 pages full of B&W drawings, photos and illustrations. Hardbound. MMP Stratus