Heim, R. and R. G. Wasson. 1958. Les Champignons Hallucinogčnes du Mexique: Etude Ethnologiques, taxonomiques, biologiques, physiologiques et chemiques. With the collaboration of Albert Hofmann, Roger Cailleux, A. Cerletti, Arthur Brack, Hans Kobel, Jean DeLay, Pierre Pichot, Th. Lempiere and J. Nicolas-Charles. (Archives Du Museum National d'Histoire Naturalle ser. 7 vol. 6). Paris. 322pp. 36 Plates.

Hofmann, A. 1958. Rapport sur une Auto-Experience avec le Psilocybe mexicana Heim. Les Champignons Hallucinogenes du Mexique:278-280. Ed. Du Mus. Nat. d'Hist. Nat. Paris.

------. 1959 Chemical aspects of psilocybin, the psychotropic principle from the Mexican fungus, Psilocybe mexicana Heim. Neuro-psychopharmacology vol. 1:446-448. September. 1st Int. Cong. of Neuro-Pharm. Rome. Italy.

------. 1971. Teonanacatl and Ololiuqui: Two ancient magic drugs of Mexico. Bulletin on Narcotics vol. 23(1):3-14. United Nations Publication.

------. 1978. History of the basic chemical investigations of the sacred mushrooms. In (Editors, Ott, J. and Bigwood, J.): Teonanacatl: Hallucinogenic Mushrooms of North America:47-61. Proceedings from the 2nd International Conference on Hallucinogenic Mushrooms. Ft. Wordon, Port Townsend, Washington, November 27-30, 1977. Psycho-Mycological Studies No. 2. Seattle, Madrona Publishers.

------. 1980. The Mexican relatives of LSD--The sacred mushroom Teonanácatl. LSD My Problem Child:101-144. McGraw-Hill. New York. Translated from German by Jonathan Ott.

------. 1990. Ride through the Sierra Mazateca in search of the magic plant 'Ska Maria Pastora'. In: Thomas J. Reidlinger (ed.) The Sacred Mushroom Seeker: Essays for R. Gordon Wasson:115-128. Dioscorides Press. Portland, Oregon.
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