Breaking Open the Head: A Psychedelic Journey into the Heart of Contemporary Shamanism

The Cosmic Serpent

The Psychedelic Explorer's Guide: Safe, Therapeutic, and Sacred Journeys

The Psychedelic Experience: A Manual Based on the Tibetan Book of the Dead (1964)

DMT: The Spirit Molecule: A Doctor's Revolutionary Research into the Biology of Near-Death and Mystical Experiences

The Doors of Perception and Heaven and Hell

Decomposing The Shadow: Lessons From The Psilocybin Mushroom

Tryptamine Palace: 5-MeO-DMT and the Sonoran Desert Toad

The Brotherhood of the Screaming Abyss

Ayahuasca in My Blood