Two Little Savages

Two Little Savages, Being the adventures of two boys who lived as Indians and what they learned is a juvenile fiction work by Ernest Thompson Seton, who was an author, wildlife artist, founder of the Woodcraft Indians in 1902 and one of the founding pioneers of the Boy Scouts of America in 1910. 

Excerpts:

There was certainly no reason to accuse Yan of neglecting school. He was the head boy of his class, although there were many in it older than himself. He was fond of books in general, but those that dealt with Natural Science and Indian craft were very close to his heart. Not that he had many—there were very few in those days, and the Public Library had but a poor representation of these. "Lloyd's Scandinavian Sports," "Gray's Botany" and one or two Fenimore Cooper novels, these were all, and Yan was devoted to them.