This series contains correspondence between Helen Kermott Penfield and Wilder Graves Penfield, as well as other friends and family between 1920 and 1932.

This series consists of notes and collected documents related to Dr. Segall's History of medicine research. This material includes records related to his various history research projects including his N.S. Korotkov book (1980), "Pioneers of Cardiology," material concerning the Osler Library of the History of Medicine, and correspondence with other medical historians.

This series contains of Cushing's typewritten drafts of chapters from his book, The Life of Sir William Osler. The series is arranged into files corresponding to chapter divisions.

Series B contains correspondence, research material and biographical information. It also includes teaching notes, lecture notes, typescripts on annual reports of both the Montreal Neurological Institute and the Royal Victoria Hospital, and statistical data of the Montreal Neurological Institute.

Series B is comprised of 62 files (files no. 107 to 169). The files are alphabetically arranged. The records in each file are arranged in reverse chronological order.

This series consists of Dr. Segall's medical research records, lecture notes, presentations, publications, and related material. While wide-ranging, the subject matter of these various kinds of materials often intersects. For example, his research records often influenced his publications and were reflected through his lectures. This interconnectivity may explain why such different forms of records were stored together. However, there are also many examples of files and boxes within the series where there are no obvious interconnections between different records.

Series G contains Dr. Elliott’s personal travel slides, some portrait photograph slides of Dr. Elliott and others at McGill University. This sub-series also includes photographs of association gatherings, staff photographs of the Department of Neurochemistry and the Montreal Neurological Institute. Various portrait photographs and ones of medical instruments are also included.

This series is divided into four (4) sub-series:
G/1) Slides, 1962-1975
G/2) Photographs, 1920-1968
G/3) Drawings, 1943-1958
G/4) Postcards, 1959-1986

This series consists primarily of various medical apparatuses, 3 voice recording machines, 4 electrocardiogram recording machines, magnetic recordings, audiograph recordings, and glass slides.

This series consists of patient records which are not arranged as part of a larger set of patient files. The reason(s) why these records were separated from the patient records in series A through F, H, or L is/are not known.

This series contains miscellaneous medical practice files, medical practice financial records, medical practice correspondence, and decorations, memorabilia, and other objects from Dr. Segall's office. While various materials from this series may be found within a single box, there is not necessarily any recognizable connection between those materials.

Series consists of files loosely arranged by subject or alphabetically by correspondent. Includes some patient records, electrocardiograms, and other clinical material. Also includes some accounting records and society or association records.