Battery Spencer (1897-1942) - Battery Spencer was a reinforced concrete Endicott Period 12" gun battery located on Fort Baker, Lime Point, Marin County, California. Named in G.O. 16, 14 Feb 1902, after Maj. Gen. Joseph Spencer, a Revolutionary War hero who died 13 jan 1789. Battery construction was begun in 1893, completed in 1897 and transferred to the Coastal Artillery for use 24 Sep 1897 at a total cost of $110,352.70. Deactivated in 1942 during World War II.