Vestal, Stanley
Warpath and council fire : the plains Indian's struggle for survival in war and in diplomacy
Random House, 1948
 Buku Teks
National Geographic on Indians of the Americas / edited by Matthew W.Stirling
National Geographic Society, 1955
 Buku Teks SO
Fletcher, Sydney E.
The American Indian
Grosset & Dunlap, 1954
 Buku Teks
McNickle, D`Arcy
They came here first: the epic of the American Indian
J.B. Lippincott, 1949
 Buku Teks SO
Ewers, John C.
Early white influence upon Plains Indian painting
Smithsonian Institution, 1957
 Buku Teks SO