Ken Burns American... Episodes on PBS

As the conclusion of Burns' two-part 1997 chronicle of the Lewis and Clark expedition begins, it's the summer of 1805, and the adventurers find themselves exploring “a great blank on the maps of their countrymen.” By November, they reach the Pacific and begin their equally arduous return trek. Hal Holbrook narrates. Included are comments by writers Erica Funkhouser, William Least Heat-Moon and Stephen E. Ambrose, historian James P. Ronda, and geographer John Logan Allen. Voices include Adam Arkin (Lewis), Murphy Guyer (Clark), Sam Waterston (Thomas Jefferson) and Matthew Broderick (John Ordway).