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'Edition of Mar. 1908.' 'E.M. Douglas, geographer in charge; Topography and triangulation by R.H. Chapman, B.D. Stewart, J.E. Blackburn, and D.F.C. Moor. Surveyed in 1906-1907.' Scale 1:250,000 (W 116°00--W 115°00/N 37°00--N 36°00). Relief shown by contours and spot heights. Title in lower-right corner: Las Vegas. Contour interval 100 feet. Datum is mean sea level. "Topography"--Center of top margin. Text about the Topographic Maps of the United States series and symbols used on map on verso. U.S. Geological Survey
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