Map showing detailed topography of the country traversed by the reconnaissance expedition through southern & southeastern Nevada / in charge of Lieut. Geo. M. Wheeler, U.S. Engineers ; assisted by Lieut. D.W. Lockwood, Corps of Engineers, U.S.A., 1869 ; PUnited States. Army. Corps of Engineers. Engineer Office[1870]"Officially compiled and published at the Engineer Office, headquarters Department of California in 1869 and 70.""Reconnaissance maps, Department of California."Includes text.Relief shown by hachures and spot heights.cartographic