United States Essential Foreign Trade Routes with the World
Shows total Major U.S. Trade Routes (and Seaports) with the World from its North and South Atlantic Ports, North and South Pacific Ports, Gulf Ports, and Great Lakes Ports. Imprint: Prepared by Division of Management Office of Budget and Management.
Essential United States Foreign Trade Routes (p. 75)
U.S. Department of Commerce, Maritime Administration, 1963.