Series C contains Dr. Elliott’s correspondence relating to his involvement with American, Canadian, British and South African associations of scientific workers. This series includes newspaper clippings, research notes, drafts and typescripts of speeches and publications for the various associations. This series is comprised of 25 files (nos. 51 to 75).

Series F contains slides concerning the examination of brain swelling, acetylcholine experiments, gamma amino butyric acid experiments, as well as other research projects. All slides were used for lectures presented for the Montreal Neurological Institute and the Department of Biochemistry, McGill University, and the University of Pennsylvania. This sub-series is comprised of 22 files (no. 181 to 200).

This series is formed of publications and other materials concerning various medical and history of medicine associations and organizations, including correspondence between Dr. Segall and others about such associations and organizations.

Referred to in Dr. Segall's "The evolution of the record system" as "Correspondence 1932-", the series contains papers relating to groups and societies in addition to personal correspondence.

This series contains correspondence between Dr. Penfield and friends and colleagues, as well as social and professional institutions. The series' contents were found at the Montreal Neurological Institute in 2008, and thus, were not included with original correspondence series (Series C) of the Penfield Archive. The records in this series have been catalogued at the item level.

Series A contains correspondence, newspaper clippings, research and teaching materiel, photographs and drafts of work from Dr. McNaughton’s association with McGill University, the Montreal Neurological Institute, the Royal Victoria Hospital, the Neuro Musical International, and various professional associations. Of special importance are the biographical files pertaining to Dr. Wilder Penfield. A large portion of this series is devoted to the study of headaches including drafts of works on this topic.

Series D contains correspondence concerning topics of Dr. Elliott’s professional interest.
This series is divided into two (2) sub-series:
D/1) Correspondence, 1944-1986
D/2) General correspondence, 1936-1985

Series consists of reports and notes collected and produced by Dr. Penfield as part of his work on committees of the National Research Council of Canada during the Second World War. The documents found in the series include American, British, and Canadian reports on different kinds of medical tests, as well as committee meeting minutes. (WP-CTEE = Wilder Penfield - Committees)

This series consists of patient records started and/or consulted between 1939 and 1969, but not consulted after 1969. Each file is stored in a 4x6" envelope. Most of the files contain heart sounds diagrams drawn by Dr. Segall, 6x12'' clinical history forms, sections of electrocardiograms attached to dated cards, as well as 4x6" normal heart sounds record forms completed by Dr. Segall, which are often accompanied by sections of electrocardiogram readings. Many files also contain correspondence between Dr. Segall and other doctors, medical institutions, and health insurance companies, and occasionally correspondence between Dr. Segall and the patient and/or the patient's family.