This is iconic and superb map of the Great Lakes region illustrating strategic forts, topography and the area claimed by the French just prior to the French and Indian War. Bellin's map, dominated the cartography of the Great Lakes region for many years.  Four non-existent islands appear in Lake Superior, including the infamous I Philippeaux Aut. I Minang that continued to appear on maps, and eluded explorers' searches for it for nearly 200 years.