>Lemhi Shoshone
If the Shoshones were fascinated by the men and equipment of the expedition, Lewis was no less fascinated by them. They were the first Indians he had seen since the Mandans. They were about as close to being untouched by contact with white men as it was possible for any tribe to be at the beginning of the nineteenth century. Cameahwait's people had perhaps seen a Spaniard or two; they had some trade goods of European manufacture, not much; they had three indifferent rifles.
https://www.lewis-clark.org/channel/199
https://www.nps.gov/jeff/learn/historyculture/shoshone.htm