Scale 1:1,000,000 (W 120°--W 114°/N 42°--N 35°). Title in upper right margin: Earthquake epicenter map ; "Nevada earthquake epicenters for the period from about 1852 to 1961 are plotted on the accompanying map." ; "Contour interval 1,000 feet." ; "Supported by grant no. AF-AFOSR-62-285 of the Air Force of Scientific Research." ; "December 1964." ; "Base from NBM Map 17." ; "One million scale set." ; Includes bibliographical references ; Includes text and index. Nevada Bureau of Mines, University of Nevada