At top of map: 'Reconnaissance Maps, Department of California.' In lower right corner: 'Photolith. by the N.Y. Lithg. Engrg. & Prtg. Co.' 'In charge of, Lieut. Geo. M. Wheeler, U.S. Engineers; assisted by Lieut. D.W. Lockwood, Corps of Engineers,U.S.A., 1969.' 'P.W. Hamel, chief topographer and draugthsman.' 'Officially compiled and published at the Engineer Office, Head Quarters Department of California in 1869 and 70 by order of Brigadier General E.O.C. Ord. Comm'dg. [signed] Geo. M. Wheeler, Lieutenant of Engineers In Charge, Head Quarters Dept. of Cal. Oct. 26th, 1870.' Includes information from railroad maps, the United States Geological Survey of the 40th parallel and from Lieutenant Ives' explorations along the Colorado. Map includes camps, astronomical stations, good and bad wagon roads, trails, springs, settlements, mining districts, state and county boundaries and the watershed between the Humboldt and Colorado Basin. Shows most of eastern half of Nevada. Relief shown by hachures and spot heights. Scale: [1:760,320]. 1 in. to approx. 12 miles. (W 117°00´--W 113°00´/N 41°45´--N 35°45´). Series: Reconnaissance maps. Military map / Department of Californiano. 1.miles. Library's copy has counties hand-outlined in colored markers.

Label in lower right coner: 'Union Pacific System. Los Angeles & Salt Lake Railroad Co. Form 30, No. 6-4002. Las Vegas, Nevada. Location of proposed water line to be installed along Track No. 8. Scale 1" = 100'. Chief Engineer's Office, L.A. & S.L.R.R. Co., Los Angeles, Caif. May 1, 1931. Dwg. No. 36103.' Handwritten in red pencil on label: 'W.O. 9798.' Accompanies: Work Order Authority for Extensions and Additions to Exisiting Property, Los Angeles & Salt Lake Railroad Co., May 1, 1931. (Box 25 Folder 80-12).

'Las Vegas Area Map 3Af.' 'Prepared in cooperation with U.S. Geological Survey.' 'Water Resources Division, U.S. Geological Survey, Carson City, Nevada.' 'Topographic base from U.S. Geological Survey, Las Vegas SE 7 1/2 quadrangle, 1967.' Scale 1:24,000 (W 115°07'30"--W 115°00'00"/N 36°07'30"--N 36°00'00"). Series: Las vegas area map ; 3Af. Urban area maps. Las Vegas area map ; 3Af. Relief shown by contour lines and spot heights. Title in margins of map: Las Vegas SE quad. : ground water. Title on publications list on Nevada Bureau of Mines and Geology website: Groundwater map of the Las Vegas SE quadrangle. Series: Urban area maps [Las Vegas area map] from publications list on Nevada Bureau of Mines and Geology website. Nevada Bureau of Mines and Geology

Scale 1:506,880. 1 in. to 8 miles (W 117°30--W 114°45/N 37°20--N 40°00). Relief shown by hachures and spot heights. At top left: 'Explorations & surveys west of the one-hundredth meridian.' At top right: 'Parts of Eastern & Southeastern Nevada & Southwestern Utah. Atlas sheet number 66.' At bottom left: 'Expeditions of 1869, 1872 & 1873.' At bottom right: ' 1st Lieut. Geo. M. Wheeler, Corps of Engineers, com'd'g.' Seal of the War Department, Corps of Engineers, U.S. Army at top center of map. Originally published as part of the geological atlas which is an appendix to the Survey's Report upon United States geographical surveys west of the one hundredth meridian, published in 1876?