The Gary Fisher papers contains a notebook of Fisher's anecdotes including recollections of his colleague Joyce Martin, patient notes pertaining to LSD psychotherapy treatments for children suffering from mental illness, articles and reports, his doctoral thesis, academic transcripts, his curriculum vitae, correspondence, and photographs.

The George Greer papers documents his research on MDMA. The collection contains a questionnaire, article, notes, graphs, and several case reports on his research subjects. The case studies are transcriptions from handwritten notes on the 29 subjects who are mentioned in Greer’s published papers. According to Greer, there are approximately 50 handwritten reports on other subjects still in his possession, which may be donated in the future.

This collection contains writings that document the career and research interests of psychiatrist and author Stanislav Grof. It consists primarily of published research articles and clippings discussing the therapeutic effects of psychoactive substances as well as some first-hand accounts of transcendental experiences.

The Harvard Psilocybin Project memos, reports and meeting minutes (1 folder; circa 1961-1962) documents the therapeutic use of psilocybin on inmates at the Concord Prison with Ralph Metzner, Richard Alpert, George Litwin, James Ciarlo, Mike Kahn, Gunther Weil, and Timothy Leary.

The Marlene Dobkin de Rios papers documents De Rios' anthropological research on hallucinogens and contains correspondence, biographical clippings, papers, conference materials, and article reprint request cards.

This collection contains clinical evaluations and personal narratives documenting LSD sessions administered during The Maryland Psychiatric Research Center's professional training program.

The Leo Zeff papers contains photographs, reports, and correspondence that document Zeff's research on ibogaine.