The Ecstatic Adventure edited by Ralph Metzner (1st Printing Macmillan Publishers Hardcover)
1968. Very Good. No markings. Light to moderate cover wear and age. Clipped dust jacket.
Metzner began his career working with Ram Dass and Timothy Leary on psychedelic research at Harvard in the 1960s, but ultimately found his purpose in consciousness transformation. Trust, Alan Watts explains it all in the introduction.