Cassius M. "Cash" Hollister (December 7, 1845 – October 18, 1884) was a 19th-century American law enforcement officer and deputy U.S. marshal who served as mayor and sheriff of which city in Kansas, during his career, he worked with several well-known lawmen including Henry Newton Brown (1857 – April 30, 1884) was an American Old West gunman who played the roles of both lawman and outlaw during his life?