The fonds consists of two bound volumes of notes on Endocrinology (some handwritten, some typed) from 1938-1939 and 1941-1942 while Masson was a PhD candidate at McGill University. Lectures given by: J. S. L. Browne, H. Selye, D. L. Thomson, C. F. Denstedt, C. Lyman Duff, C. P. Leblond, D. McEachern, R. L. Noble. Also included are three volumes of published works.

The fonds also consists of three bound volumes of Masson's published work from various medical journals (published in France, Canada, and USA) between 1932-1959. The articles are mostly in English, and some are in French.

The collection consists of seven volumes of Elliott's personal diaries, which were bound together, at his own expense, after their completion. These diaries cover the five-year period that Elliott spent serving overseas, primarily in England. The contents of the journals include handwritten entries, sketches and watercolours that were either executed in the pages of the diary or pasted in, and photographs, newspaper clippings, letters, playbills, menus and other paraphernalia that were also pasted into the diary. These serve to document both the development of the war and Elliott's personal experiences. The diaries are generally in chronological order although there are places, particularly in the last three volumes, where the diaries have been bound out of sequence.

The fonds also contains several folio sheets of photographs and clippings regarding Elliott's career.

Fonds shows H.R. Griffith's papers and records pertaining to his introduction of the homeopathic remedy curare into anesthesia. The fonds contains correspondence, case records, and reprints, as well as the minute book of the Montreal Homoeopathic Association, 1863-1968.

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.

Fonds consists principally of one three-ring loose leaf holograph notebook written in pencil and ink. The notebook details cases that Morton worked on during the period of February to May, 1935, while at Guy’s Hospital in London. Fonds also includes a letter from real estate broker William E. Speed to Capt. W. B. Holms concerning a property rented to the Mortons; single blank leaf with letterhead of C. S. Morton (Harry Stafford Morton’s father); New Year’s card from Earle C. Phinney; and newspaper clipping of editorial by Sir William Osler, “Promethean Gift of the Century Physical Suffering Diminished.”

Fonds shows Herbert Frederick Moseley's relations with his editor for his book "Shoulder Lesions". It contains an original manuscript with the publisher's annotations for the 1945 edition and another complete copy.

The collection consists of documents pertaining to Dr. H. S. Birkett's medical activities, including 117 bound volumes of patient records (1889-1942), medical notebooks (1893-1896), bound RVH reports (1894-1938), RVH charts (1901-1920) and registers (1899-1917). There are also various letters addressed to Mr. and Mrs. Birkett, a manuscript, newspaper clippings, various degrees and medical association certificates, as well as photographs of H. S. Birkett's personal life and professional life at McGill and elsewhere. The collection also includes various artifacts collected by H. S. B, including military and medical memorabilia collected by H. S. Birkett.

Fonds documents Dr. H.E. MacDermot's medical-historical activities. The fonds contains newspaper clippings, manuscript notes, photographs, lectures notes, and a draft of The MGH, the Years of Change.

This collection is divided into material either by, or about, Wilder Graves Penfield. The material was collected by Lewis in order to write his biography. The fonds also includes materials associated with Mr. Lewis' writing of the biography.

The Penfield material is organized by family member, with the largest portion belonging to Wilder Penfield and his wife Helen Penfield. This material is largely personal in nature. It consists of originals and photocopies of diaries, as well as personal correspondence between Penfield and his wife, family photographs, and ephemera from a variety of social and professional events. There is also a small selection of personal correspondence between family members.

Lewis created drafts, revisions, letters concerning the development of the screenplay, and research material. Correspondence between Lewis and the family is contained in the material covering personal family matters.

Fonds consists of chiefly correspondence of or about Dr. John Clarence Webster, from 1892 to 1952. It also contains his medical thesis from 1891, "Tubo-pentoneal ectopic gestation. The anatomy of the pelvis during the puerperium, and the female pelvic floor,"with accompanying 2 bound volumes of watercolour plates.