Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated March 18, 1955, together with accompanying papers and illustrations, on a review of report on the Missouri River with respect to control of floods on Lower Heart River and its tributaries, particularly in the vicinity of Mandan, N. Dak., requested by a resolution of the Committee on Public Works, United States Senate, adopted June 1, 1948.