An unidentified archeologist performing an excavation at Pueblo Grande de Nevada, also known as the "Lost City," near Overton, Nevada. Image may be included in Lost City Album, Nevada State Parks Collection.

Description given with photograph: "A close-up view of the ancient metate, or grinding stone, located at the Southern end of the Pueblo Grande de Nevada. Fragments of pottery and stone grinders or pestles [sic] in view."

'At top of map: ' United States Department of the Interior. Geological Survey.' ' Bulletin 1021, Plate 32.' At bottom of map: 'Geology by Donald E. Hibbard and Mike S. Johnson, 1952.' 'Base from USAF Aeronautical Chart and Information Service, April 1952.' 'Interior--Geological Survey, Washington, D.C. MR-3767.' Scale 1:63,360 (W 116°10--W 115°55/N 37°15--N 36°40)
Geological Survey bulletin, 1021

Machinery at Hoover Dam site near Boulder City, Nevada, 1931.

Equipment at Hoover Dam site near Boulder City, Nevada, 1931.

An image of workers scaling canyon walls at the Hoover Dam construction site.