Map of the city and county of San Francisco : 1927 / prepared by the Board of Public Works ; M.M. O'Shaughnessy, City Engineer ; A.L. Auradou, cartographer.O'Shaughnessy, M. M. (Michael Maurice), 1864-19341927Includes inset showing boundaries of city and county of San Francisco.Relief shown by hachures and spot heights.cartographic