Access Restricted Archival objects in this container: General research files, 1974 to 2004 Maps and sketches, approximately 1960 to 1989 Maps, sketches, and illustrations, 1951 to 2001 Overton, New St. Joseph research files, approximately 1960 to 1999 BSE Hidden Hills project maps, 2010 to 2011 "ATLATL Rock" research files, illustrations, maps, 1980 to 1999 Clark County Comprehensive Plan files, 1983 to 2013 Warren Goodsprings property plot plan, 1993 Turtle Bone Site archaeological sketch, approximately 1980 to 1999