Born in New York City, Dr. Sidney Cohen was a psychiatrist and early LSD researcher. He received his PhD from Columbia University in New York, and his MD from Bonn University in Germany. He worked as Chief of Psychosomatic Medicine at the Veterans Administration Hospital in Los Angeles, as Associate Clinical Professor of Medicine at UCLA, and was editor of the Journal of Psychopharmacology. On November 10, 1955, Betty Eisner became Cohen's first subject in his first LSD study; she worked with Cohen studying LSD for about a year and a half, before moving on to her own psychedelic research. During their time working together Cohen and Eisner took LSD with Bill Wilson, founder of Alcoholics Anonymous, resulting in Wilson's unsuccessful attempt to incorporate LSD into the A.A. program. In the late 1960s, Cohen served as the Director of the Division of Narcotic Addiction and Drug Abuse at the National Institutes of Mental Health in Maryland. Cohen was the "Dr. C", referenced by Laura Huxley in This Timeless Moment, who supplied the LSD for Aldous Huxley's deathbed experience.