NY: The Viking Press, 1975. First edition. xxviii, 257pp. Grey boards backed with black cloth; purple topstain. Inked notes to front flyleaf, four or five dog-eared corners. Very good or better in a like jacket, unclipped, with light wear at spine ends and tips, toning to flaps.
Attractive copy of the first book by the Czech psychiatrist, a report on his first eighteen years of research on the psychological effects of LSD. Acknowledged by Grinspoon & Bakalar (Psychedelic Drugs Reconsidered, 1981) as "probably the most important and certainly the most intellectually original single book on psychedelic experience."
