Updated May 14, 2020 | Infoplease Staff Contents A Great Transaction in Land Beginning a Long Journey From the Lower to the Upper River Novel Experiences among the Indians From the Tetons to the Mandans Winter among the Mandans From Fort Mandan to the Yellowstone In the Haunts of Grizzlies and Buffalo In the Solitudes of the Upper Missouri To the Great Falls of the Missouri A the Heart of the Continent At the Sources of the Missouri From the Minnetarees to the Shoshonees Across the Great Divide Down the Pacific Slope Down the Columbia to Tidewater From Tidewater to the Sea Camping by the Pacific With Faces turned Homeward The Last Stage of the Columbia Overland east of the Columbia Camping with the Nez Perces Crossing the Bitter Root Mountains The Expedition Subdivided Adventures on the Yellowstone The End of a Long Journey .com/texts/history/first-across-the-continent/index.html .com/texts/history/first-across-the-continent Sources Our Common Sources