Berkeley: University of California Press, 1968.
First edition, first printing. [xii], 196 pp. Dark grey cloth with gilt lettering on spine. Near Fine in Very Good dust jacket. Hint of foxing to edges, light shelf wear. Jacket has some rubbing, some small tears and small creases at extremities, price intact ($5.95). The author's first account of his encounters with Yaqui shaman Don Juan Matus, published while he was still a grad student by an academic press. Item #151125012