At top of map:'Department of the Interior, U.S. Geological Survey. Prepared in cooperation with the Clark County Department of Comprehensive Planning. Water supply paper 2320-A, plate 1.' At bottom of map: ' Base from U.S. Geological Survey, 1:100,000, Boulder City, Ariz.-Nev., Las Vegas, Nev.-Calif., Mesquite Lake, Nev.-Calif., 1978; Lake Mead, Nev.-Ariz., 1979. Geology from Malmberg (1965); Longwell and others (1965); Haynes (1967); Bingler (1977); Bell and Smith (1980); Bell (1981); Matti and Bachhuber (1982); and Matti and Morton (1982a, b); modified by R. W. Plume, 1981.' Shows township and range lines. Scale 1:100,000 (W 115°30´--W 115°00´/N 36°30´--N 36°00´). Series: U.S. Geological Survey water-supply paper2320-A. Originally published as plate 1 of Ground-water conditions in Las Vegas Valley, Clark County, Nevada. Part I. Hydrogeologic framework / by Russell W. Plume, published by the U.S. Geological Survey in 1989 as Water-supply paper 2320-A.

'Department of the Interior, U.S. Geological Survey. Water-supply paper 2320-A, plate 2.' 'Prepared in cooperation with the Clark County Department of Comprehensive Planning.' 'Geology by R.W. Plume, 1981.' Scale [ca. 1:95,040. 1 in.=approx. 1.5 miles]. Series: U.S. Geological Survey water-supply paper2320-A. Originally published as plate 2 of Ground-water conditions in Las Vegas Valley, Clark County, Nevada. Part I. Hydrogeologic framework / by Russell W. Plume, published by the U.S. Geological Survey in 1989 as Water-supply paper 2320-A. "Prepared in cooperation with the Clark County Department of Comprehensive Planning."

'Department of the Interior, United States Geological Survey. TEI-840.' 'Prepared in cooperation with the U.S. Atomic Energy Commission.' 'Contours in northwest Las Vegas Valley from Malmberg, 1961.' Relief shown by contours. Shows township and range lines. Scale [ca. 1:253,440. 1 in.=aprrox. 4 miles] (W 114°00´--W 115°00´--N 37°00´/N 36°00´). Originally published in A summary of the ground-water hydrology of the area between the Las Vegas Valley and the Amargosa Desert, Nevada : with special reference to the effects of possible new withdrawals of ground water / by Isaac J. Winograd, published by the U.S. Geological Survey in 1963 as number 840 of the Trace elements investigations report.

'United States Department of the Interior, Geological Survey. Open-file report, 84-130, plate 1.' 'Prepared in cooperation with the Clark County Department of Comprehensive Planning.' 'Base from U.S. Geological Survey 1:100,000, Boulder City, Ariz.-Nev., Las Vegas, Nev.-Calif., Mesquite Lake, Nev.-Calif., 1978, Lake Mead, Nev.-Ariz., 1979.'Geology from Malmberg (1965); Longwell and others (1965); Haynes (1967); Bingler (1977); Bell and Smith (1980); Bell (1981); Matti and Bachhuber (1982); and Matti and Morton (1982a and b); modified by R. W. Plume, 1981.' Shows township and range lines. Scale [ca. 1:102,960. 1 in.=approx. 1.625 miles] (W 115°30´--W 115°00´/N 36°30´--N 36°00´). Series: Open-file report (Geological Survey (U.S.))84-130. Originally published as plate 1 of Ground-water conditions in Las Vegas Valley, Clark County, Nevada. Part I. Hydrogeologic framework / by Russell W. Plume, published by the U.S. Geological Survey in 1984 as Open-file report 84-130.

'Types of soil as determined by James M. Montgomery for use in appraisal. (Copy). LRM 7/10/52'--handwritten in blue pencil in lower right corner of map. 'September 2, 1947. Revised September 2, 1948.' Soil was designated as badly corrosive, mildly corrosive, or non-corrosive by hand-drawn colored lines and hand-printed labels. Soil was surveyed to measure its effect on water pipes. Scale [ca. 1:7,200] 1 in.=600 feet.

'S.P.L.A.&S.L.R.R. Los Angeles Division. Map of pipe line from Big Spring. Las Vegas, Nev. Approved: Jan. 24, 1911. E.M. Jessup, E.M. of W.' In lower right corner: '4-U-323.' Scale [ca. 1:2,400] 1 in.=200 feet. Relief shown by contours. North is to upper right.

'Union Pacific System. Los Angeles & Salt Lake Railraod Company.' 'Office of Industrial Engr., Los Angeles, California, April 20th, 1931. Dwg. No. 588.' Scale: 1" = 200'.