Harley-Davidson: The American Motorcycle by Allan Girdler
This book features the best and most important Harley Davidson bikes from 1903 to 1992. There are 24 milestone Harley-Davidson motorcycles, focusing on the developments these bikes carried to the road and track. The author's previous books include the Illustrated Harley-Davidson Buyers Guide, Harley Davidson Racers and Harley Davidson XR-750.