Claim: John Fremont and Joseph Nicollet explored the Dakota Territory in May or June 1838, and their notes dsescibe the areas as the "lake country of the coteau prairie;" however, their notes do not describe Lake Kampeska, and some of their findings seem to be second-hand accounts of the area.
Evidence: Famous pathfinder John C. Fremont and scientist Joseph Nicollet explored this region of Dakota Territory approximately in May or June 1838. In their undated notes they described the area as the "lake country of the coteau prairie." Some of their findings appear to be second hand accounts of the area.