00832cam a2200241 4500 184821018 TxAuBib 19980715120000.0 980715s1996||||||||||||||||||||||||eng|u 95-37146 9780684811079 0684811073 TxAuBib Ambrose, Stephen E. Undaunted courage : Meriweather Lewis, Thomas Jefferson, and the opening of the American west / Stephen E. Ambrose. Simon & Schuster : New York, 1996. 484 pgs. Explorers. Lewis and Clark. The definitive book on the most momentous expedition in American history and one of the greatest adventurestories of all time. Lewis & Clark. Explorers.