An introduction to the lives of Lewis and Clark and to the exploratory expedition they led from St. Louis to the Pacific Ocean in the early nineteenth century. "[Adler] traces the two-year journey from beginning to end and brings the narrative to life with excerpts from letters and journal entries. Occasionally, Adler interjects, placing events in context and pointing out their significance." — Kirkus Reviews David A. Adler has written more than a hundred books for children, including his well-known Picture Book Biography series. A former teacher, he lives with his family in New York State. Visit him on the web at www.davidaadler.com. Ronald Himler has illustrated more than a hundred books for children, including several books in the Picture Book Biography series. He lives in Arizona.