In “Reverend Edward Ashley’s 1923 Campaign to Ban Peyote in South Dakota,” Richmond L. Clow describes how a prominent Episcopalian missionary fought to end the ceremonial smoking of peyote in Native American Church ceremonies across the state. Edward Ashley, who previously championed the free exercise of religion among American Indians in South Dakota, believed that peyote use had negative social consequences and feared that the practice reflected a surge in fundamentalist sentiment on the reservations. Clow is professor emeritus of Native American studies at the University of Montana in Missoula.