This is Montana: Missouri headwaters are central to Montana history (Part 2 of 2)

When the Corps of Discovery returned to St. Louis in September 1806, fur trappers already were on their way to the new country. In North Dakota, after meeting a group of trappers heading upriver, the Corps' John Colter left the expedition and returned to the country he fondly recalled. In 1808, Colter and John Potts were trapping at the three forks when they encountered Blackfeet hunters and warri...