A dictionary of everyday Crow [microfilm] : Crow-English, English-Crow / compiled by Belva Tushka with the assistance of G.H. Matthews and Robert Chadwick
Dictionary of the Ponca people Louis Headman ; with Sean O'Neill ; with the Ponca Council of Elders: Vincent Warrior, Hazel D. Headman, Louise Roy, and Lillian Pappan Eagle