The Peyote Foundation: Dedicated to the protection and promotion of the peyote cactus and its sacramental use.
União do Vegetal: Personal account of a Unaio do Vegetal service from a book about spiritual uses of psychoactives by Nicholas Saunders
Web of Possibilities: Contains historical information and other resources on the use of hallucinogens for spiritual awakening and growth. Includes bibliographies on the use of hallucinogens in shamanic religions.