Dr Nathan Harold Segall (1897-1990) was Montreal's first fully trained cardiologist and was instrumental in introducing the specialty to Canada. A McGill medical graduate, he studied diseases of the heart in Boston, London, and Vienna in the 1920s before returning to Montreal to practice. Having a private practice, Dr Segall also worked at the Montreal General Hospital, where he ran one of the country's first cardiac clinics, and was one of the founders of the Jewish General Hospital in the early 1930s. Head of Cardiology at the Jewish General, he was also an Assistant Professor of Medicine at McGill between 1949 and 1960, as well as one of the founding members of both the Montreal Cardiac Society and the Canadian Heart Association.

At his death in 1990 more than six decades of Dr Segall's patient records, cardiac research, medical history research, and office files were left to McGill University. This finding aid is a guide to that collection of archival material (or fonds), its organization, and its contents. Please use the site menu to find details about the fonds as a whole, the various parts of the fonds and their contents, as well as to search the fonds for particular records.