Archival objects in this container: Mining building and a boat on Lake Mead, approximately 1935-1939 Passenger cruiser on Lake Mead near Hoover Dam, approximately 1930-1939 Iceberg Canyon at Lake Mead on the Colorado River, approximately 1935-1950 Boulder Canyon and Lake Mead, approximately 1935-1950 Hoover Dam's downstream face and Nevada lookout point with Fortification Mountain in the background, approximately 1936-1939 Hoover Dam's downstream face, powerhouse, and diversion tunnels, approximately 1935-1939