Access Restricted Archival objects in this container: General research files, approximately 1976 to 2003 Las Vegas Historic Preservation Inventory & Planning Guidelines reprint, conference reprint, 1978 to 2012 Lake Mohave Warren manuscripts, correspondence, 1964 to 2018 Claude Warren San Dieguito manuscripts, notes, approximately 1965 to 2002 San Dieguito reprints, 1963 to 2009