'Cartography by W. C. Kainsinger, W.T. Taylor. Field mapping by K. R. Reed, G. Boyd. Typography by W. R. Williams.' 'Copyright by Automobile Club of Southern California. C-21351.' 'C-1352'--Panel. Index on verso. In lower right corner: 'Map number 1959.' Scale 1:415,210 (W 116°--W 114°/N 37°--N 35°). Relief shown by hachures and spot heights. Shows mines, ranches and springs. Not the same as the 1948 edition of this map. Cartographers', field mappers', typographers' names are different, and 2 out of 3 numbers on maps are different. Probably after 1947 as Boulder Dam has been changed to Hoover Dam, but before 1950 as Las Vegas Bombing and Gunnery Range has not been changed to Nellis Air Force Base. Automobile Club of Southern California.
'Prepared by the Automobile Club of Southern California.' 'burke' in lower right corner. '1352' in circle in lower left corner. Relief shown by hachures and spot heights. Shows mines, ranches, and springs. Scale [ca. 1:443,520] (W 115°30--W 114°--N 36°30/N 35°)
Scale [ca. 1:221,760. 1 in. to approx. 3.5 miles] ; 1 map : col. ; 51 x 62 cm ; Relief shown by contours and spot heights ; "Prepared in Washington Office from compilation made in Las Vegas Office." ; "Map no. 24000." ; Includes township and range grid ; Shows power lines, triangulation stations, boundary monuments, roads, telephone lines, mines, bench marks, etc. ; Department of the Interior, Bureau of Reclamation.
Colorado River-Hoover Dam. Diagram of Boulder Dam in construction from book: Boulder Dam of the Great Southwest, by Ralph B. Simmons, 1936. Image taken January 4, 1940. Site Name: Hoover Dam (dam)