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 Albert Hofmann correspondence and other materials contains correspondence with Ralph Metzner and Rolf von Eckartsberg, a photocopy of Hofmann's patent for LSD, photographs of Hofmann, a brochure for U.C. Santa Cruz Symposium (1982), and clippings on Hofmann.

The William Richards Collection on Walter Pahnke (1952-1972; 0.2 cubic feet) contains materials collected and donated by William Richards that document the life and work of his close colleague, Walter Pahnke. It includes some of Pahnke's important academic writings, copies of personal manuscripts, some biographical information, writings by his wife (Eva Sontum Pahnke), and materials memorializing his untimely passing.

The Rick Strassman papers (1989-1991; 1 folder) contains correspondence, a DMT Rating Scale questionnaire, and an article reprint.

The Thomas B. Roberts papers documents his research in psychoactive substances through articles, clippings, correspondence, conference materials, and a course syllabus.

The David Solomon papers contain professional correspondence as well as information pertaining to psychological studies with psychotropic drugs. Solomon's correspondence with Robert Burdett and correspondence pertaining to "Flight to Reality" represents a large portion of the collection.

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