John Ross. Course of the River Mississippi. 1775. Active Octavo “The Scientific Legacy of the

“The Scientific Legacy of the U

This refers to Nicolaas Witsen (1641-1717)

In 1795 the Treaty of San Lorenzo (or Pinckney’s Treaty) with Spain gave Americans the right to deposit goods duty free in New Orleans for transit up and down the river

California as an island

EXTREMELY FINE engraved view of the city of Quebec

John Ross. Course of the River Mississippi. 1775. Active Octavo “The Scientific Legacy of theROSS, Lieutenant John (1744 1809). Course of the River Mississippi, from the Balise to Fort Chartres; taken on an expedition to the Illinois. Engraved map with original hand color in outline. London: Robert Sayer, 1 June 1775. 46" x 21 1 4" sheet. An early map of the Mississippi River based on English sources, second issue with additions of Fort St. Leon and Fort St. Mary just south of New Orleans. Earlier English maps more generally focused on the