The Harley-Davidson Motor Co. Archive Collection

Randy Leffingwell wrote his first book, American Muscle, in 1989 while still on staff at the Los Angeles Times. Since then, he has authored another 47 titles, covering subjects from sports cars to motorcycles to farm tractors. Leffingwell is considered one of the top Corvette historians working today, and he enjoys a close working relationship with Chevrolet as well numerous other manufacturers. His previous Corvette titles include Art of the Corvette, Corvette: Seven Generations of High Performance, Corvette Sixty Years, and Legendary Corvettes. He lives in Southern California.Darwin Holmstrom has written, co-written, or contributed to over thirty books on subjects ranging from motorcycles and muscle cars to Gibson Les Paul guitars, including Indian Motorcycles, GTO: Fifty Years, Let's Ride: Sonny Barger's Guide to Motorcyclying,Top Muscle: The Rarest Cars from America's Fastest Decade, BMW Motorcycles, The Life Harley-Davidson, and The Complete Idiot's Guide to Motorcycles. Darwin has served as senior editor for Motorbooks and Midwestern editor for Motorcyclist magazine.