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    Assman, J. The Search for God in Ancient Egypt. Cornell University Press, 2001.
    Bastien, J. Healers of the Andes: Kallawaya herbalists and their medicinal plants. Salt Lake City: University of Utah Press, 1987.
    Berlant, S. “The Entheomycological origin of Egyptian crowns and the esoteric underpinnings of Egyptian religion.” Journal of Ethnopharmacology 102 (2005): 275-288.
    ———. “The Prehistoric Practice of Personifying Mushrooms.” Journal of Prehistoric Religion 13 (1999): 22-29.
    Christian, Ratsch. The Encyclopedia Of Psychoactive Plants. Park Street Press, 2005.
    Emboden, W. “The sacred narcotic lily of the Nile: Nymphaea Caerulea.” Economic Botany 32, no. 4 (1978): 304-310.
    Fernandez Distel, A. “Hallazgo de pipas en complejos preceramicos del borde de la Puna Jujena (Republica Argentina) y el empleo de alucinogenos por parte de las mismas cultura.” Universidad de Chile Estudios Arqueologicos 5 (1980): 55-79.
    Hoffman, M. “Mushroom myth and imagery in Hawai’i: evidence for an indigenous cult.” The Entheogen Review 11, no. 2 (2002): 41-47.
    “Khoekhoen Rock Art.” The African Rock Art Digital Archive, n.d. http://www.sarada.co.za/traditions/african_pastoralists_and_herders_/khoekhoen_rock_art/.
    Lagerheim, G. “Eine neue, goldgelbe Brugmansia.” Gartenflora 42 (1893): 33-35.
    Lajoux, J. The Rock Paintings of Tassili. World Publishing Company, 1963.
    Lhote, H. The Search for the Tassili Frescoes. 2nd ed. New York: E.P. Dutton & Co., n.d.
    McKenna, T. Food of the Gods. Bantam Books, 1993.
    Mond, R. Rock Drawings of Southern Upper Egypt, 1939.
    Ogalde, J., B. Arriaza, and E. Soto. “Prehistoric psychotropic consumption in Andean Chilean mummies.” Nature Precedigns, 2007. http://precedings.nature.com/documents/1368/version/1.
    Patton, M. Statements in Stone. Taylor & Francis, 2007.
    Ruck, C.A.P, and B. Staples. The Apples of Apollo: Pagan and Christian Mysteries of the Eucharist. Carolina Academic Press, 2001.
    Schleiffer, H. Narcotic Plants of the New World Indians: An Anthology of texts from the 16th century to date. New York: Hafner Press, 1973.
    Schultes, R.E. “De Plantis Toxicariis e Mundo Novo Tropicale: Commentationes III: Phytochemical examination of Spruce’s original collection of Banisteriopsis caapi.” Botanical Museum Leaflets 22, no. 4 (1969): 121-32.
    Stamets, P. Psilocybin Mushrooms of the World: An Identification Guide. Ten Speed Press, 1996.
    Trompf, G. In Search of Origins: The Beginnings of Religion in Western Theory and Archaeological Practice. New Dawn Press, 2005.
    Vonarburg, B. “Die Tollkirsche (1. Teil).” Naturlich 10, no. 96 (1996): 61-64.
    Voogelbreinder, Snu. The Garden of Eden. Snu Voogelbreinder, 2009.
    Wasson, R.G. The Wondrous Mushroom: Mycolatry in Mesoamerica. McGraw Hill, 1980.
    Wells, S.A. “American Drugs in Egyptian Mummies.” ucr.edu, n.d. http://www.faculty.ucr.edu/~legneref/ethnic/mummy.htm.
    Williams, M. Prehistoric Belief: Shamans, Trance and the Afterlife. The History Press, 2010.