Herbert Wagner is a recognized authority on Harley-Davidson motorcycles. He has written or contributed to five other books and has published many articles on the subject. He recently contributed to "Forbes" magazine's special Harley-Davidson 100 year anniversary publication. He has also served as a consulting historian for Harley-Davidson Motor Co., Inc.'s Annual Reports. The author is an active motorcycle rider and has restored several older Harleys to original vintage condition.