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.

Compiled in the Bureau of Topographical Engineers of the War Department. Chiefly for Military purposes under the authority of Honorable J.B. Floyd, Secretary of War, 1860. 42 x 69 cm. Shows towns, wagon roads, explorers' routes, railroads, forts, etc., approx. from Albuquerque, N.M. to Fort Lane, Or. and from Fort Laramie, Wyo. to Los Angeles, Calif. "Corrections and additions in reference to railroads in California, etc., were made in January, 1862 ..." "The new military posts at Fort Bidwell, ... located from a map loaned ... January 16, 1866." "Atlas to accompany the official records of the Union and Confederate armies, 1861-1865. Plate CXX."--Upper margin. Atlas published by the Washington Government Printing Office in 1891-95. Relief shown by hachures. "Julius Bien & Co. Lith. N.Y." Includes text and list of authorities. Inset: March routes of Army of the Tennessee from Savannah, Ga., to Columbia, S.C., 1865, accompanying the report of Maj. Gen O.O. Howard, U.S. Army, series I, vol. XLVII, part I. Includes bibliographical references. Washington Territory is shown prior to becoming Washington state. The geographic region of Southwest is referred to as the New Southwest. Original publisher: Govt. Print. Off..