Ethnomycologist and banker Wasson provided evidence for the important role that hallucinogenic mushrooms - in particular the ubiquitous mushroom Amanita muscaria (fly agaric) - play in various ancient and modern cultures. The first edition was limited to 680 copies finely printed at the Stamperia Valdonegga in Verona.  Digital facsimile of the trade edition issued by Harcourt Brace Jovanovich from the Internet Archive at this link.