National Parks and Monuments
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2007
...SS Fla., Miss. 1971 137,458 (55,651) Historic forts and white sand beaches near Pensacola, Fla.; Fort Massachusetts and primitive offshore islands in S Miss. Indiana Dunes LS NW Ind. 1966 15,138 (6,129) 200-ft (60-m) sand dunes, beaches, and marshes...