The Edward C. Light Schematic Drawings of the Hughes H-4 Hercules "Spruce Goose" Seaplane consists of blueline print reproductions of sheets created between 1941 and 1950 containing schematic engineering design drawings pertaining to the aircraft's rudder and flight control system assembly and installation. Types of drawings include full body perspective diagrams, structural sections, elevations, and plans.

Oral history interview with Leo Dunbar, Harry Hall, Harold Wadman, Carl Merrill, and Mary Ann Merrill conducted by Dennis McBride on June 24, 1986 for the Boulder City Library Oral History Project. The interviewees discuss their early lives and families, moving to Nevada, and starting work on the Hoover Dam. They recall memories of living in Boulder City, Nevada during the Great Depression and beyond, and share information about the construction of the dam and the city as well as personal stories about their lives in Southern Nevada.