Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated April 18, 1966, submitting a report, together with accompanying papers and an illustration, on an interim survey of North Nashua River and tributaries, Merrimack River Basin, Massachusetts, requested by resolutions of the Committee on Public Works, United States Senate, adopted September 14, 1955 and February 9, 1961.