Sent by President Thomas Jefferson to find the fabled Northwest Passage, Meriwether Lewis and William Clark led the most important expedition in American history. This extraordinary film by Ken Burns tells the remarkable story of the entire Corps of Discovery, which included young army men, French-Canadian boatmen, Clark's African-American slave and the Shoshone woman named Sacagawea, who brought along her infant son. Journey with them all, across a breath-taking landscape in an unforgettable experience that explores both the history and the promise of America. Full color. Running time: 240 minutes.

Available in DVD (keyword: 3-20290) or VHS (keyword: 3-12651).