Great Lakes harbors study--interim report on Toledo Harbor, Ohio : letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated March 26, 1959, submitting a report, together with accompanying papers and an illustration, on Great Lakes harbors study--interim report on Toledo 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