Intracoastal Waterway from Apalachicola Bay to St. Marks River, Fla. Letter from the Secretary of War. Transmitting a letter from the Chief of Engineers, United States Army, dated July 12, 1939, submitting a report, together with accompanying papers and an illustration, on reexamination of Intracoastal Waterway from Apalachicola Bay to St. Marks River, Fla., requested by resolution of the Committee on Rivers and Harbors, House of Representatives, adopted February 16, 1939.