George Drouillard's service to the Lewis and Clark Expedition was long obscured by the stronger light cast on the leaders and Sacagawea. Drawing from the various journals of the expedition and from many more obscure documents, letters, and legal records, M. O. Skarsten presents not merely an account of the pursuits in which Drouillard engaged but also an idea of the kind of man he was, as a member of the famous expedition and later as a partner of Manuel Lisa in the fur trade. The variety of responsibilities assigned to Drouillard during the expedition form an impressive list-recruiting...