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U.S. Geological Survey (1945)

1905 edition, reprinted 1945.

U.S. Army Map Service (1946)

U.S. Army Map Service (1946)

Unknown author (Washington: War Dept., Corps. of Engineers, U.S., 1944)

U.S. Army Map Service (1946)

Unknown author (Washington: War Dept., Corps. of Engineers, U.S., 1944)

U.S. Geological Survey (1945)

1901 edition, reprinted 1945.

U.S. Geological Survey (1941)

1914 edition, reprinted 1941.

Unknown author (Washington: War Dept., Corps. of Engineers, U.S. Army, 1944)

U.S. Geological Survey (1949)