Book excerpt: First published in 1979, Psychedelic Drugs Reconsidered is regarded by many as the most comprehensive, accurate, and accessible analysis of psychedelic drugs for the general reader. It records the extensive history of scientific research on, and societal experience with, psychedelic drugs. The Lindesmith Center reprint edition features a new introduction by the authors on recent developments in psychedelic research, as well as a preface by Dr. Ethan Nadelmann, director of the Lindesmith center.