The USPS has released a series of four American motorcycles postage stamps. The stamps were released in Sturgis during the rally as well as in Harleyville, SC. Here's the announcement on the USPS website.
American Motorcycles
In early August, during the Sturgis Motorcycle Rally in Sturgis, SD, the role of motorcycles in American culture will be recognized on four "American Motorcycles" stamps featuring digital illustrations of a 1918 Cleveland, a 1940 Indian Four, a 1965 Harley-Davidson Electra-Glide, and a circa 1970 chopper. The Cleveland, Indian and Harley-Davidson stamps are based on motorcycles in existence today. The circa 1970 chopper featured on the stamp was created by stamp artist Steve Buchanan in consultation with professional chopper builders. Although lacking various safety features such as mirrors and turn signals that are usually required under today's laws, this chopper would have been street-legal in 1970.