Introduced in 1936 Harley-Davidson's "Knucklehead" was the company's first production overhead-valve engine; it's the great-grandfather of today's Evolution engine. The engine was just one of many innovations associated with the 1936-47 era, all of which are covered in great detail in Harley-Davidson Knuckleheads. Illustrated with beautiful new photography of some of the best Harley-Davidson Knuckleheads in the United States and archival photos from when the Knuckleheads were new.

80 colour and 40 black & white illustrations. Paperback. 128pp