Undaunted Courage - Part 1 of 2 Author:Stephen E. Ambrose Part 1 of 2. Written by Stephen Ambrose, one of America's best historians, tells the story of Lewis and Clark and of their expedition into the wilderness and paints a vivid picture of the trials and tribulations of this epic adventure. This book provides a great deal of detail regarding the backgrounds and lives of Lewis and Clark. Barrett White... more »ner is an excellent reader for this book.« less