The authors concentrate on what Lewis was doing immediately before and after the journey through Western territory. They assess his role as a natural scientist and as governor of the Louisiana Territory. Thomas Jefferson thrust the latter role upon Lewis during a time of crisis. As Danisi and Jackson reveal, he would much rather have devoted this time compiling his notes and scientific findings into a vivid narrative of the expedition's adventures. Finally, using medical documentation, the book reveals the actual cause of Lewis's untimely death.--From publisher description.