Roger Heim and R. Gordon Wasson, Les Champignons Hallucinogenes du Mexique and Nouvelles Investigations sur Les Champignons Hallucinogenes. Softcovers in the original wraps, French text throughout, 12.75 x 9.5 inches. Published by Editions du Museum National d'Histoire Naturelle, Paris. 2 volume set: 1. Les Champignons Hallucinogenes du Mexique [The Hallucinogenic Mushrooms of Mexico], 1958, 322 pp., 36 plates in the back, plus color frontis and other illustrations throughout, some fold-out charts. Some top-edges still uncut. Tome VI of the museum's Septieme Serie. Includes photos of Maria Sabina administering the sacred drug. 2. Nouvelles Investigations sur Les Champignons Hallucinogenes [New Investigations on Hallucinogenic Mushrooms], 1967, 115-218 pp., 11 plates in the back, plus color frontis, pasted on illustrations and in-text illustrations throughout. 2 of the great illustrated books on magic mushrooms. In very good condition overall. 1: Spine with creases and light wear, but secure. 2: Spine with light wear, small paper scrape at rear cover. Merchandise will be packed and transported by the purchaser at their own risk and expense. A list of recommended shippers is on our website: https://www.conceptgallery.com/auctions/shipping/ .