G3700 svar .U6 CA San Francisco Quad15 San Francisco 15-minute Quadrangle San Quentin 7.5-minute Quadrangle Richmond 7.5-minute Quadrangle San Francisco North 7.5 minute quadrangle Oakland West 7.5-minute Quadrangle UNKNOWN map 1895 U.S.Geological Survey 1:62,500 Contour interval 25 feet Surveyed in 1892, 93, 94 UNKNOWN map 1899 U.S.Geological Survey 1:62,500 Contour interval 25 feet Surveyed in 1892, 93, 94 UNKNOWN map 1915 U.S.Geological Survey 1:62,500 Contour interval 25 feet Surveyed in 1892, 93, 94; Culture revised 1914 UNKNOWN map 1942 U.S. Corp of Engineers 1:62,500 Contour interval 25 feet Projection: Polyconic, NAD 1927 Tactical Map UNKNOWN map 1946 U.S. Army Map Service 1:50,000 Contour interval 50 feet Projection: Polyconic, NAD 1927 AMS 2, 1946 UNKNOWN map 1948 U.S. Army Map Service 1:50,000 Contour interval 50 feet Transverse Mercator Projection, NAD 1927 AMS 3, 1948 none RBG 800 Internal UNKNOWN UNKNOWN 0 UNKNOWN UNKNOWN UNKNOWN 0 JPG RGB 0 UNKNOWN UNKNOWN 300 U.C.Berkeley UNKNOWN UNKNOWN UNKNOWN map UNKNOWN map UNKNOWN map UNKNOWN map UNKNOWN map UNKNOWN map UNKNOWN Quad15 UNKNOWN image/tif image/tif image/tif image/tif image/tif image/tif image/xxx