This Vast Land

This Vast Land is an historical novel for the young-adult public, written by American historian and author Stephen Ambrose. Published in 2003 by Simon & Schuster Children's Publishing, it a fictionalized account in the form of a diary written by George Shannon, the youngest member of the Lewis and Clark Expedition. The novel details the expedition from Shannon's viewpoint; although beginning the expedition as the most inexperienced member, he slowly matures into one of the expedition's most important figures.