Crazy Horse: Young War Chief (Childhood of Famous Americans Series) Book

I read this novel and then read other books about the Lakota Sioux origin and history. I noticed that the novel was accurate in describing the events that occurred in Crazy Horse's life. It was also objective in carefully withholding blame for events that had a negative impact on the tribe. Crazy Horse was hero because he was true to his vision and worked unselfishly to protect and provide for the tribe throughout his life. In the book he felt great remorse when he killed a woman. He returns to his village to find the inhabitants massacred and at another time comes upon a native american encampment where the inhabitants have all died of a mysterious illness. The author describes these tragic events thoughtfully and without including a lot of disturbing details.