União do Vegetal - Personal account of a Unaio do Vegetal service from a book about spiritual uses of psychoactives by Nicholas Saunders - http://www.csp.org/nicholas/vegetal.html
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. - http://www.well.com/user/dpd/webposse.html
The Peyote Foundation - Dedicated to the protection and promotion of the peyote cactus and its sacramental use. - http://www.peyote.net/