Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated March 31, 1961, submitting a report, together with accompanying papers and illustrations, on a review of the Columbia River and tributaries, requested by resolution of the Committee on Public Works, United States Senate, adopted July 28, 1955, and other resolutions by that Committee and by the Committee on Public Works, House of Representatives, listed in the report.