Myron J.S. The Secret Chief Revealed: Conversations with Leo Zeff, pioneer in the underground psychedelic therapy movement

Multidisciplinary Association for Psychedelic Studies, 2004. — 176 p.The Secret Chief Revealed reveals for the first time, the identity of pioneering psychedelic therapist Leo Zeff, which was kept secret in the original The Secret Chief. The book contains the same text as the original with 32 pages of added material including epilogues written by Leo's children and patients, and a new introduction by Myron Stolaroff.