Many of you have already seen the Travel Channel spot on the sisters as shown in the 'Mysteries at the Museum' series. If not, check out the link below. The show is called "Greatest Mysteries: Sturgis". In 2003 Adeline and Augusta were inducted into the Sturgis Hall of Fame.
The show runs for about an hour with 15 minute segments on the Sturgis rally, the history of the area and its founder Pappy Hoel, Deadwood, and the sisters. The sisters segment starts at minute 29 if you are pressed for time, but I suggest you watch the entire show.