In the Riding Back In Time On My Daddy?s Harley Davidson book, you will learn the history of motorcycles. The story begins with the invention of the wheel, and tracks each development along the way from bicycles and the discovery of oil to the invention of combustion engines. Authors Jean Davidson and Jon Davidson Oeflein provide unique "story within a story" illustrations to make it easy for younger reader to follow along. This is a great book for any child! Published by The Guest Cottage.