Donald Bahr is Professor of Anthropology at Arizona State University and author of Pima-Papago Ritual Oratory (1975) and Piman Shamanism and Staying Sickness (1974).Donald Bahr is Professor of Anthropology at Arizona State University and author of Pima-Papago Ritual Oratory (1975) and Piman Shamanism and Staying Sickness (1974).