Identified as "Office Files" in the series descriptions found in Box 308, this series consists of chequing records, cheque stubs, federal and provincial taxation records, daily record books (professional charges), donation records, bank deposit records, and account statements of Dr. Segall's practice. Box 469 also contains personal tax records circa 1982.

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.

This series consists of case history files of patients with mitral stenosis. Like most other patient files of the fonds, almost all of these 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.

Series contains extra copies of 68 clinical reports printed on Dr. Segall's stationary from the Medical Arts Building. Some of the reports contain sections of electrocardiograms in addition to other information.

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 consists of rolled electrocardiograms taken of various patients.

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

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 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.