Since the expedition left Fort Mandan in the beginning of April, they had not met any Indians.
July 27, 1805. Lewis: we begin to feel considerable anxiety with rispect to the Snake Indians. if we do not find them or some other nation who have horses I fear the successful issue of our voyage will be very doubtfull or at all events much more difficult in it's accomplishment. ... however I still hope for the best, and intend taking a tramp myself in a few days to find these yellow gentlemen if possible.
Photo: Nez Perce National Historical Park, courtesy of the National Park Service.