Preserving and presenting Napa County History with exhibits, research library, and programs. The Napa County Historical Society is a 501 (c) 3 non-profit organization dedicated to the discovery, preservation and presentation of the people and history of Napa County, and its place in California history and the world. We make history engaging through exhibits, lectures, and events, as well as research, publications, and educational activities. A membership and sponsorship based organization, NCHS strives to amplify heritage tourism in downtown Napa and throughout the Valley through inclusivity, respect, stewardship, open communication, collaboration, innovation, and grit.