Course of the river Mississippi from the Balise to Fort Chartres : taken on an expedition to the Illinois, in the latter end of the year 1765 / by Lieut. Ross of the 34th Regiment ; improved from the surveys of the river made by the French.Ross, Lieut1 June 1775.From Jefferys's The American atlas ... London : Printed and sold by R. Sayer and J. Bennett, 1776.Relief shown pictorially; depths by soundings.Shows forts, Indian villages, etc.cartographic