The Telluride Mushroom Festival is held in Telluride, Colorado.
Psychiatrist and researcher Humphry Osmond creates the term "psychedelic."
R. Gordon Wasson, his wife Valentina, and photographer Allan Richardson participate in a mushroom velada led by Maria Sabina.
BBC reporter Christopher Mayhew films his experience after taking mescaline.
American anthropologist Jean Basset Johnson and his wife Irmgard Weitlaner become the first "modern" white people to witness a mushroom velada (healing ceremony) in Huautla, Mexico.
Lewis Carroll's book "Alice in Wonderland" is published.
Catholic priests punish native Mexicans for using entheogens.
The Mixtec Mesoamerican Codex shows the ritual use of mushrooms by Mixtec gods.
Xochipilli statue depicting Psilocybe aztecorum is carved by Aztecs
Psilocybe mushrooms are used in early Christian worship and Christian art.
Scholars believe that the ancient Greek Eleusinian Mystery initiations were centered around a species of Psilocybe.