An exact chart of the river St. Laurence, from Fort Frontenac to the island of Anticosti shewing the soundings, rocks, shoals &c with views of the lands and all necessary instructions for navigating that river to Quebec.

Scale ca. 1:695,000.Hand colored.Relief shown pictorially. Soundings shown in fathoms.Appears in the author's The American atlas. 1775.Includes text.Insets: The Seven Islands.--A continuation of the river from Quebec to Lake Ontario.--St. Nicholas or English Harbor.--The mountains of our Lady or Notre Dame.--The road of Tadousac.--The traverse or passage from Cape Torment into the South Channel of Orleans Island.--A view of the lands from Cape Torment to the Butt as it appears in sailing through the Travers into the South Channel.On verso: 9.LC Maps of North America, 1750-1789, 23