'By C.R. Longwell, E.H. Pampeyan, and Ben Bowyer.' 'Prepared cooperatively by the U.S. Geological Survey.' 'Topographic base from Army Map Service Kingman (1947) and Las Vegas (1953) two-degree quadrangle. More recent editions were published after geological compilation and are used on Plate 2.' 'Geology compiled 1955 with revisions and additons to 1964.' At top of map: 'Nevada Bureau of Mines. Bulletin 62, Plate 1.' Published by Williams & Heintz Map Corp. Scale 1:250,000. Bulletin (Nevada Bureau of Mines)62. Relief shown by contours and spot heights. Includes two index maps and eight cross-sections.