Works by Charles A. Eastman: The Soul of the Indian. Indian Boyhood. Old Indian Days. Indian Heroes. Wigwam Evenings. Indian Scout Talks. Indian Child Life. The Indian To-day. Red Hunters.

Charles Alexander Eastman was a Santee Dakota physician educated at Boston University, writer, national lecturer, and reformer. In the early 20th century, he was "one of the most prolific authors and speakers on Sioux ethnohistory and American Indian affairs."