The Museum on Main was established in 1970 by the Amador-Livermore Valley Historical Society to preserve and promote the history of the Tri Valley region through public programming, which includes exhibits, lectures, school tours and annual events. Ken MacLennan joined the Museum on Main staff in 2008, shortly after completing his MA in museum studies at San Francisco State University. He also holds an MA in history from the University of Illinois at Urbana-Champaign, where he worked in exhibit development for the Spurlock Museum of World Cultures. Mr. MacLennan is a member of the American Alliance of Museums, the California Association of Museums and the Society for Military History.