Topographic map of the Las Vegas Valley and surrounding northern and western mountain ranges, 1943

'Edition of Mar. 1908, reprinted 1943.' '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 ; polyconic proj. (W 116°00´--W 115°00´/N 37°00´--N 36°00´). Relief shown by contours and spot heights. 'Contour interval 100 feet.' 'Datum is mean sea level.' Includes township and range lines. Text and illustrations from the Topographic maps of the United States series on verso. Series: The topograhic maps of the United States. Map includes the Desert Range; Sheep Range; Pintwater Range; Las Vegas Range; Spring Mountains; Indian Springs Valley; Spotted Range. United States, Dept. of the Interior, Geological Survey