Issued in 2006, the American Motorcycles stamps featured digital illustrations by Steve Buchanan of a 1918 Cleveland, a 1940 Indian Four, a 1965 Harley-Davidson Electra-Glide, and a circa 1970s chopper. These illustrations are based on restored motorcycles, reference photographs and consultation with owners and experts. Some colors and features were altered for artistic purposes or to maintain historical accuracy.
