This forty page unpublished monograph details the author’s personal experiences with nitrous oxide, cannabis, LSD, psilocybin and ketamine.

This manuscript, written by John Hannon, is an unpublished, forty page account of the author's experiences while experimenting with nitrous oxide.  Hannon compares his experiences while using nitrous oxide to those while under the influence of cannabis, LSD, ketamine, and psilocybin.  He also provides some historical context for the use of hallucinogenics and experiences while under their influence.

The Dennis and Terence McKenna papers contain unpublished manuscripts, field reports, journals of personal reflections, photographs, and correspondence pertaining to Dennis and Terence McKenna’s intellectual and research interests.

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 Darrell Lemaire papers contains two documents pertaining to the creation of novel psychedelic substances.

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