California. Arroyo Grande quadrangle (15'), 1897 (1925)

Henry Gannett, Chief Topographer. R.U. Goode, Geographer in charge. Triangulation by U.S. Coast and Geodetic Survey. Surveyed in 1895. Polyconic projection. To place on North American datum move projection lines 690 feet south and 210 feet west. [Vertical] datum is mean sea level