Certificate, Goldfield Circle Mining Company, March 17, 1906

Certificate, Goldfield American Mining Company, November 27, 1906

Certificate, Manhattan Gold Mining and Milling Company, November 16, 1907

Minutes of the regular monthly meeting of the Board of Directors of Goldfield Belmont Extension Mining Company, April 8, 1912

Certificate, The Bullfrog Gold Coin Mining Company, January 13, 1909

Certificate, Montezuma Silver Mining Corporation, August 19, 1919

Ed. of Mar. 1904, reprinted Apr. 1910 ; Scale 1:12,000 (W 117 14'--W 117 12'/N 38 05'--N 38 03') ; 1 map : col. ; 41 x 31 cm ; Oriented with north toward the upper left ; Relief shown by contours and hachures ; Topography by W.J. Peters ; "Surveyed in 1902-1903." ; "Triangulation by U.S. Coast and Geodetic Survey." ;