United States Essential Foreign Trade Routes – U.S. Atlantic Ports, U.S. Gulf Ports and South and East Africa
Shows Major Trade Routes (and Seaports) between U.S. Atlantic Ports, U.S. Gulf Ports and South and East Africa. Imprint: Prepared by Division of Management Office of Budget and Management.
Essential United States Foreign Trade Routes (p. 27)
U.S. Department of Commerce, Maritime Administration, 1963.