Portsmouth Harbor and Piscataqua River, Maine and New Hampshire, Letter from the Secretary of the Army Transmitting a Letter from the Chief of Engineers, Department of the Army, Dated June 1, 1962, Submitting a Report, Together with Accompaying Papers and Illustrations...requested by Resolutions of the Committees on Public Works, United States Senate and House of Representatives, Adopted November 18, 1958 and June 3, 1959