Letter from R. Gordon Wasson of Danbury, Connecticut, U.S.A., on the 'subject of entheogenic ('hallucinogenic') mushrooms' and copy of related pages from Wasson's book entitled 'Perspehone's Quest: Entheogens and the Origins of Religion', 1986-04-12, GBR/1928/NRI/SCC2/42/41. The Papers and Possessions of Joseph Needham, GBR/1928/NRI/NRI2. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/333416 Accessed April 25, 2025.