Letter from the Secretary of War transmitting a letter from the Chief of Engineers, United States Army, dated May 26, 1938, submitting a report, together with accompanying papers and illustrations, on reexamination of Columbia and Snake Rivers, Oreg., Wash., and Idaho, authorized by section 6 of the River and Harbor Act approved August 30, 1935, and requested by resolutions of the Committee on Commerce, United States Senate, adopted May 21, 1938, August 21, 1935, and June 10, 1936.