Ralph Metzner was a German-born American psychologist, writer and researcher, who participated in psychedelic research at Harvard University in the early 1960s with Timothy Leary and Richard Alpert. Wikipedia
Born: May 18, 1936, Germany
Died: March 14, 2019 (age 82 years), Sonoma, CA
Books
The Psychedelic Experience: A Manual Based on the Tibetan Book of the Dead
1964
The unfolding self
1998
Green Psychology
1999
Birth of a Psychedelic Culture: Conversations about Leary, the Harvard Experiments, Millbrook and the Sixties
2010
Well of Remembrance
1994
Maps of Consciousness: I Ching, Tantra, Tarot, Alchemy, Astrology, Actualism
1971