Tryptamines I Have Known And Loved: The Chemistry Continues

Breaking open the head (2002)

LSD: My Problem Child (1979)

Tryptamine Palace: 5-MeO-DMT and the Sonoran Desert Toad (2009)

The Cosmic Serpent: DNA and the origins of knowledge (1998)

Supernatural: meetings with the ancient teachers of mankind (2005)

The invisible landscape: mind, hallucinogens, and the i ching (1994)