The 1900-1920s Harley-Davidson Motorcycles Channel features some of the earliest models around. Check out vintage Harleys at HowStuffWorks.
1925 Harley-Davidson JD
The 1925 Harley-Davidson JD motorcycle introduced Harley's familiar tear-drop-shaped fuel tank. Sidecars were popular accessories of the day as these vehicles often served as a family's primary form of motorized transportation. Read about the Harley JD.