Rodgers, A. F. U.S. Coast and Geodetic Survey. cartographic Topographic maps. lcgft Washington, D.C. : Coast and Geodetic Survey, 1857 ; eng Relief shown by contours and spot heights. "Copied from the original topographic sheet no. 687 in the Archives of the U.S. Coast and Geodetic Survey, Washington, D.C. April 14th, 1891." Lower left margin: "Printed June 1893." Upper left margin and lower right margin: 3054. San Francisco (Calif.)--Maps. United States San Francisco. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g4364s.ct001440