Kenneth F. Roahen (1888-1976) was an eminent game warden, naturalist, and photographer for the U.S. Biological Survey/U.S. Fish and Wildlife Service. Roahen is notorious for investigating market hunters associated with organized crime in Chicago, including a web of marketeers associated with Al Capone. During one particular confrontation on March 3, 1925 at the Sangamon River bottoms in Illinois, Roahen and U.S. Game Warden M.A. Charlton were ambushed by three market hunters with shotguns. Both men were hit with dozens of buckshot. Roahen was hit in the hands, arms, stomach, and face. The two men then had to make a five mile trek back to their boat, and drive 25 miles to Havana before receiving any medical attention. Roahen was the target of numerous violent attempts on his life including the disabling of his automobile, and the destruction of his patrol boat. Over the course of his career in Illinois, Roahen was significantly wounded 6 times. Roahen was transferred to Billings, Montana in December 1930, where he served as the president and director of the Custer Battlefield Historical Museum, and was an accomplished photographer whose photos have appeared in many magazines, news features, books, and motion pictures.