Black Rock Channel and Tonawanda Harbor, N. Y. Letter from the Secretary of War transmitting the letter from the Chief of Engineers, United States Army, dated April 16, 1942, submitting a report, together with accompanying papers and two illustrations, on a review of reports on Black Rock Channel and Tonawanda Harbor, N. Y., requested by a resolution of the Committee on Rivers and Harbors, House of Representatives, adopted on February 11, 1941, and subsequent correspondence in relation thereto.