Ralph Metzner

Salvia Divinorum: A Western Approach

DMT: The Spirit Molecule

Peyote to LSD: A Psychedelic Odyssey

Neurons to Nirvana

The Psychedelic Experience

LSD: Problem Child and Wonder Drug

The Way of the Psychonaut

Signs Out of Time: The Life of Archaeologist Marija Gimbutas

Entheogen: Awakening the Divine Within

Turn On, Tune In, Drop Out

Hofmann's Potion: The Pioneers of LSD

How To Go Out of Your Mind: The LSD Crisis