Persephone's Quest: Entheogens and the Origins of Religion - Robert Gordon Wasson, Stella Kramrisch, Carl A. Ruck, Jonathan Ott - Google Books

https://books.google.de/books?id=akI9uAhZAa8C&dq=entheogen+entheogens

This fascinating book discusses the role played by psychoactive mushrooms in the religious rituals of ancient Greece, Eurasia, and Mesoamerica. R. Gordon Wasson, an internationally known ethnomycologist who was one of the first to investigate how these…