Presents an account of the two-and-a-half-year expedition that yielded vast knowledge of the West, geographically and scientifically.

What was the Lewis and Clark Expedition? -- The cocaptains -- The journey begins -- Winter sets in -- Sacagawea -- Pushing off -- Travel on the rivers -- A homecoming -- In and out of Fort Clatsop -- The return trip -- Setbacks -- Arriving home -- Timelines.