Sergeant Charles Floyd was one of the first three men enlisted in Lewis and Clark's Corps of Discovery. Born around 1782 in Louisville, Kentucky, and personally recruited by William Clark, Floyd followed orders and kept a careful diary of the expedition, but only for ninety-nine days. On August 20, 1804, Floyd became the only member of the Lewis and Clark Expedition to die along the route, apparently succumbing to a ruptured appendix near present-day...