This Series consists of ten drawers of a Kardex index, each of which is approximately 52 cm long. The top five drawers consist of indexed conditions, each of which is identified by a two or three character alphanumeric code (either A1 to A45, B1 to B99, or C1 to C70). Attached to each condition in the index is a list of the electrocardiogram numbers of particular patients. Dr. Segall seems to have determined that the listed electrocardiograms represent manifestations of their corresponding Kardex index condition. The individual electrocardiograms are located in Series G and are marked with their electrocardiogram numbers, the date on which they were created, as well as the names of the patients from which they were taken.

Drawers 6 through 10 of the Kardex index (Series M) contain indexed sections for 80 different cardiac symptoms. Each of the 80 symptoms are further divided into 10 (numbered 0 to 9) different sub-sections (possibly for different variations of each symptom), each of which contains a list of the electrocardiogram numbers, often, but not always, including the numbers for electrocardiograms of the patients whose files bear that particular two to three digit numerical code. The listed electrocardiograms seem to have been determined by Dr. Segall to represent manifestations of the corresponding Kardex index symptom.

According to the series descriptions found in Box 308, the series consists of five bundles of sheets summarizing the patient record details of the files contained in Series A.

Series consists of newspaper and magazine article clippings collected by Dr. Penfield.

Series B contains correspondence between Dr. McNaughton and other professionals, as well as obituaries and newspaper clippings.

Series consists of files showing the different works in research done by Vineberg, with his research fellows, correspondence.

This series consists of correspondence, notes, reports, and report drafts which were created and collected by Dr. Penfield as part of his travels to, and work in, Britain, the Middle East, and the Soviet Union for the National Research Council of Canada during the Second World War. (TR = Travels)

This series contains the final drafts of Dr. Penfield's various published books.

The series consists of documents showing Arthur Vineberg's personal aspects. Series is divided in seven sub-series : (P126/A1) General Correspondence, (P126/A2) Correspondence regarding Family Matters, (P126/A3) Curriculum Vitae, Honours and other personal informations, (P126/A4) Legal Affair, (P126/A5) Properties, Appartment and Gardening, (P126/A6) St.Sauveur Clinic, (P126/A7) The Christmas Shop. Includes correspondence, statements,