NY: Holt, Rinehart and Winston, 1966. Second printing, in same year as first. 8vo; white cloth with orange and purple rectangular motif on front board; orange, purple, and black spine titles; dust jacket. 326pp. Soiling and light foxing to board edges. Moderate soiling to textblock fore-edge. Very good in a very good jacket, unclipped ("$7.95"), showing toning and moderate edge wear, a few tiny chips. A pioneering work, based on fifteen years of research into various aspects of the psychedelic experience by this husband-and-wife duo, also noted for their involvement with the countercultural Human Potential Movement of the late 1960s.
