'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.' 'Jan. 15, 1914.' Includes other parts of water utilities besides pipelines such as sump pumps and water tanks. Scale varies. Blueprint. Library's copy includes hand-written notes.

'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.

'Office of Vice President, Los Angeles, California.' 'Dwg. F-225.' Relief shown by contours. Hand-drawn red line marks portion of ranch property owned by Land Company. Scale [ca. 1:7,200]. 1 in.=600 feet. Blueline.

'Preliminary topographical map embracing in skeleton a portion only of the notes from surveys made in accordance with Par.II Special Orders No. 109 War Dept., March 18th, 1871 and letter of instructions of Brig. General A.A. Humphreys, Chief of Eng'rs. dated March 23rd, 1871. Conducted under the immediate direction of 1st Lieutenant Geo. M. Wheeler, Corps of Eng'rs., assisted by 1st Lieutenant D.W. Lockwood, Corps of Eng'rs. and 2nd Lieutentant D.A. Lyle, 2nd U.S. Artillery, during the summer and fall of 1871. Louis Nell, chief topographer and draughtsman.'' At head of map: 'Explorations in Nevada and Arizona. U.S. Engineer Department.' In lower left corner: 'Note: This map is a hasty and partial compilation from the topographical data already received, many still remaining en route. Upon it is projected in skeleton the groundwork of the area examined. All points except the prominent astronomical positiions are subject to lsight modification upon the final map.' Shows area through central Nevada, eastern California, and central Arizona. Relief shown by hachures. Published by the War Dept. Scale [ca. 1:1,520,640]. 1 in. to 24 miles (W 118°--W 109°/N 41°--N 32°).

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 California
no. 1.miles. Library's copy has counties hand-outlined in colored markers.