Author Stephen Ambrose discusses writing, history, Meriwether Lewis and William Clark with Joan Cartan-Hansen. Ambrose, in Idaho for an Idaho Humanities Council event, says for most Americans, the name of the historic expedition is all one word - "LewisandClark." He calls the 1803-1806 cross-country journey "the greatest camping trip of all time."
His own fascination with the journey, its discoveries and the two expedition leaders led to his best-selling book, "Undaunted Courage: Meriwether Lewis, Thomas Jefferson and the Opening of the American West." He also is one of the featured historians in the miniseries by filmmaker Ken Burns "Lewis & Clark: The Journey of the Corps of Discovery."