The Chebeague Island Historical Society was founded April 6, 1984. The Museum of Chebeague History opened in 2003. CIHS is a 501 (c) 3. To acquire, preserve, and promote history and material culture related to Great Chebeague Island and its environs: to create a sense of place and enrich the lives of those with island connections and the general public through exhibits, research, technology, and publications.