Fonds shows T.F. Cotton's activities as a student at McGill University, 1903-1909. The fonds contains 24 bound notebooks with lectures notes taken by Cotton, 1903-1909, for courses in Medicine, Political Science, History, French Literature, English Composition and Literature. There is also a case book containing electrocardiograms and a volume of ophthalmology lecture notes bearing the name George C. Hale.

The fonds documents Purdy A. MacDonald's activities as a medical student at McGill University. The fonds contains student notebooks, loose notes and hand-outs.

The fonds documents the Osler Society's activities. The fonds contains lectures, dinner menus, list of speakers, newsletters, papers, posters and tape recordings.

Fonds documents Dr. Oscar Emery Morehouse's involvement with his alma mater, McGill University. The fonds contains admission tickets, programmes, newspaper clippings, receipt, examination paper,menus and invitation cards.

Fonds consists of 2 volumes of meeting minutes.

The collection contains the Holmes Gold Medal, photographs, certificates, a poem, letters, newspaper clippings and memoirs.

The fonds contains Dr. Ormrod's note books while an undergraduate and medical student at McGill.

Fonds documents J.B. Johnston's professional activities from 1839 to 1859. It also includes his medical thesis De delirio tremente, Edinburgh, 1833. The fonds contains a logbook with notes, summaries of readings, reports of unusual medical cases and obstetrical list, and his medical thesis.

Fonds documents H.R. Clouston's medical activities and his association with McGill University. The fonds contains notes, reprints, photographs and newspapers clippings.

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.