Leary, Metzner and Alpert's 1964 guide adapting the Bardo Thodol into a manual for structuring and interpreting psychedelic sessions. Pinchbeck wrote the introduction to the 2008 Penguin Classics edition.
Introduction by Daniel Pinchbeck ยท Timothy Leary, Ralph Metzner and Richard Alpert
Penguin Classics, 2008
ISBN 9780141189635