Greersen's Case Studies in Navajo Ethnographic Aberrations

In Tony Hillerman's 1970 Navajo detective novel THE BLESSING WAY, Greersen is a fictional anthropologist who wrote about skinwalkers and Navajo witchcraft. In the plotline of the novel, the character referred to as the Navajo Wolf or the Big Navajo used the information about Navajo Wolves from Greersen’s fictional book, CASE STUDIES IN NAVAJO ETHNOGRAPHIC ABERRATIONS, in order to impersonate a Navajo witch, otherwise known as a skinwalker.