Relief shown by hachures. Depth along new course of Yellow River shown by soundings in fathoms. Old and new courses of Yellow River, present and former lakes, Grand Canal, and other major rivers are shown. From: The Journal of the Royal Geographical Society of London. Vol. 40 (1870), pp. 1-33; held in Firestone Library. Call number: G7 .J687 v. 40 1870