In Undaunted Courage, Stephen Ambrose has pieced together previously unknown information to provide a colorful and realistic backdrop for the expedition which is seen through Lewis's eyes.

Lewis is supported by a rich variety of colorful characters: Jefferson, whose interest in exploring and acquiring the American West went back thirty years; Clark, a rugged frontiersman whose love for Lewis matched Jefferson's; numerous Indian chiefs; the French and Spanish fur traders of St. Louis; and many leading political, scientific, and military figures of the turn of the century.

High adventure, high politics, suspense, drama, and diplomacy combine with high romance and personal tragedy to make this outstanding work of scholarship as engaging as any work of fiction.

Amazon.com Review
A biography of Meriwether Lewis that relies heavily on the journals of both Lewis and Clark, this book is also backed up by the author's personal travels along Lewis and Clark's route to the Pacific. Ambrose is not content to simply chronicle the events of the "Corps of Discovery" as the explorers called their ventures. He often pauses to assess the military leadership of Lewis and Clark, how they negotiated with various native peoples and what they reported to Jefferson. Though the expedition failed to find Jefferson's hoped for water route to the Pacific, it fired interest among fur traders and other Americans, changing the face of the West forever.