The National Register of Historic Places is the official list of the Nations’ historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate and protect America’s historic and archeological resources. Established in 1973 by the National Trust for Historic Preservation for May, the event is co-sponsored by local preservation groups. State historical societies, business and civic organizations across the country. Napa County Supervisor, Brad Wagenknecht, presented Napa County Landmarks with the 2021 May Proclamation in honor of Preservation Month.