The John C. Whitehorn Collection spans his entire career at Johns Hopkins. It consists of biographical material, professional correspondence, and committee records, as well as records of the department of psychiatry and records of the Henry Phipps Psychiatric Clinic which pertain to facilities, funds, personnel, and programs. The collection also documents Whitehorn's work as a member (and later chairman) of the State of Maryland Mental Hygiene Advisory Board from 1947 to 1960. There are numerous records regarding a funded research project conducted with Barbara Betz (1943-1960). In addition, there are materials relating to curricula and a collection of typed transcripts (approximately 200 pages) of Whitehorn's lectures for the first year course in medical psychology, from February to March of 1956. This includes a transcript of one lecture given by Adolf Meyer. Correspondence with the governor and other state officials, minutes, agendas, and various personal notes are also included.