On a September day in 1877, hundreds of Sioux and soldiers at Camp Robinson crowded around a fatally injured Lakota leader. A young doctor forced his way through the crowd, only to see the victim fading before him. It was the famed Crazy Horse. From intense moments like this to encounters with such legendary western figures as Calamity Jane and Red Cloud, Valentine Trant OConnell McGillycuddys life (18491939) encapsulated key events in American history that changed the lives of Native people forever. In Valentine T. McGillycuddy: Army Surgeon, Agent to the Sioux, the first biography of the man in seventy years, award-winning author Candy Moulton explores McGillycuddys fascinating experiences on the northern plains as topographer, cartographer, physician, and Indian agent.