Email Record: Letter from the Secretary of War transmitting a letter from the Chief of Engineers, United States Army, dated March 23, 1938, submitting a report, together with accompanying papers and illustrations, on examinations of Mill Creek, Wash., a tributary of Walla Walla River, authorized by the Flood Control Act approved June 22, 1936, and by acts of Congress approved June 13, 1934, and May 6, 1936.