Little Missouri River and tributaries at Marmarth, N. Dak. Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, United States Army, dated October 4, 1949, submitting an interim report, together with accompanying papers and illustrations, on the little Missouri River and tributaries at Marmarth, N. Dak. This interim report is submitted under the authority for a review of report on little Missouri River and tributaries to determine the advisability of combining the interests of flood control and of irrigation in a program at this time, requested by a resolution of the Committee on Commerce, United States Senate, adopted on October 25, 1937.