The Corps of Discovery holds the first official council between representatives of the United States and the Oto and Missouri Indians at Council Bluffs, Iowa. They hand out peace medals, 15-star flags and other gifts, parade men and show off technology.
A friendly council with the Yankton Sioux held. According to a legend, Lewis wraps a newborn baby in a United States flag and declares him "an American."
A council meets with the Shoshone, during which Sacagawea learns the fate of her family and reveals that Cameahwait is her brother. Lewis and Clark successfully negotiate for horses for passage over the Rocky Mountains. They buy 29 horses for packing or e
The Blackfeet Indians try to steal Lewis's group's rifles. A fight broke out and two Indians were killed. This is the only hostile encounter with an Indian tribe.
![Clark wrote in his journal, “Ocian [ocean] in view! O! the joy.”](https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photo/2714852/image/5fe03014a39faa91c31c9c8d119850d1?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB6ZCNNAN7BE7WDQ%2F20250915%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20250915T160030Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=6ad0bb0235a513faa6d68acfbb52db9ae8281aaf7fcebbc5d68847bdae8575c0)
