Charles A. Eastman (Ohiyesa) (1858-1939) was a mixed-blood Sioux who became one of the best-known Indians of his time. He earned a bachelor's degree from Dartmouth and a medical degree from Boston University. From his first appointment as a physician at Pine Ridge Agency; where he witnessed the events that culminated in the Wounded Knee massacre, he sought to bring understanding between Native and non-Native Americans. He wrote eleven books, some, such as Sister to the Sioux (also available as a Bison Book), in collaboration with Elaine Goodale Eastman. His From the Deep Woods to Civilization: Chapters in the Autobiography of an Indian, Indian Boyhood, Indian Heroes and Great Chieftains, Old Indian Days, and The Soul of the Indian: An Interpretation are all available as Bison Books.