Of the twenty volumes and portfolios that comprise The North American Indian, five focus on the Southwest: Vol. I, 1907. Apache and Navajo. Vol. II, 1908. Pima, Papago, Qahatika, Mohave, Yuma, Maricopa, Walapai, and Havasupai. Vol. XII, 1922. Hopi. Vol. XVI, 1926. Tiwa, Keres, Taos, Isleta, Jemez, Cochiti, Sia, Santo Domingo, Acoma, and Paguate. Vol. XVII, 1926. Tewa, Zuni, San Ildefonso, San Juan, Nambe, Tesuque, and Santa Clara.