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.

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.

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 consists of alphabetically ordered office files, mostly from the 1980s. The files contain material concerning various medical and history of medicine associations. There are also a small number of files on various colleagues and patients. These files do not include patient files with case histories.

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.

This series contains personal and family records of various kinds. Examples include correspondence, school and university study notes, official and unofficial documents, financial records, and photographs.

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 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.

The fonds largely document Dr. Segall's professional activities as a cardiologist. It contains correspondence, notes, experimental notebooks, lecture notes, articles, speeches, patients' records, electrocardiograms, reprints and material pertaining to the Louis Gross Memorial Lectures, 1922-1979. Also included are several electrocardiograph machines, dictation devices, and audio recordings (reel-to-reel tapes, dictation disks, and cassette tapes). In addition, the fonds contain records of Dr. Segall's personal and family correspondence, financial transactions, and various other official and unofficial documents.

Series contains case histories of Trans Canada Airlines and Ferry Command pilots. As Dr. Segall explains in "The evolution of the record system" (Box 308), the TCA and ferry command patient records were segregated in order to provide a collection of normal patterns of heart sounds from which he could develop a model pattern for heart sounds. This normal model pattern was then used as the standard against which he could compare the heart sounds of other patients.