Most volumes divided into 18 sections: General history, Manners and customs, Antiquities, Geography of the Indian country, Tribal organization, history and government, Intellectual capacity and character, Topical history, Physical type of the Indian race, Language, State of Indian art, Present condition and prospects, Demonology, magic, and witchcraft, Medical knowledge, Literature of the Indian languages, Statistics and population, Biography, Religion, Ethnology. Vol. 6 is divided into 2 sections: A condensed view of the Post-Columbian; and Economy and statistics, capacity of industrial and social development, and national position, illustrated by some notices of the mental character of the hunter race, and their ancient status and archaeology.

List of works in or on Athapaskan dialects including those of the Alaskan Indians, with a chronological index.