Founded in 1973, Jefferson County Historical Society's (JCHS) first major effort was to successfully persuade Jefferson County Open Space (JCOS) to purchase the structures now known as Hiwan Homestead Museum. JCHS was recently renamed as the Evergreen Mountain Area Historical Society. JCOS and EMAHS currently maintain a cooperative relationship that preserves the historical structures while serving to display and interpret EMAHS's local Colorado collection. Hiwan Homestead Museum was placed on the National Register of Historic Places in 1974 and now features a significant Native American arts collection. The mission of EMAHS is to protect, preserve and promote the history of Jefferson County. EMAHS members contribute their time and financial support to collect, preserve and interpret local history, ensuring a legacy that enriches the lives of present and future generations.