The author’s discussion of Crow tribal history and his vivid descriptions of current reservation life show how the Apsáalooke are adapting to a changing world. By examining pivotal social and religious institutions, including the clan-uncle and clan-aunt relationships, the acquisition and use of medicine, and the Sun Dance, the author show how reciprocity and interdependence weave together Apsáalooke society and help individuals determine their place in clan, society, and cosmos.