Great Lakes harbors study : second interim report on Cleveland Harbor, Ohio : letter from the Secretary of the Army transmitting a letter from the chief of engineers, Department of the Army, dated June 6, 1962, submitting a report, together with accompanying papers and an illustration, on the Great Lakes harbors study--second interim report on Cleveland Harbor, Ohio, requested by resolutions of the committees on public works, United States Senate and House of Representatives, adopted May 18, 1956 and June 27, 1956.