Fonds documents the Montreal years of H.V. Ogden and the ties he had with Sir William Osler. The fonds contains the correspondence of H.V. Ogden consisting of letters from May Francis and Marian Francis (Osborne), letters from George Cantlie, a letter from Dr. Robert Palmer Howard and a letter from Edmund J.A. Rogers.

Fonds shows Henry Beaumont Small's activities as a medical student through his admission cards for his complete medical formation. It contains 43 admission cards signed by or printed for the teachers, among them William Osler.

The fonds contains original and typescript letters, manuscript notes, newspaper clippings, journal extracts, reminiscences and more, assembled by Harvey Cushing chiefly between 1920 and 1924 during the course of his research for the biography of William Osler. For the biography, Cushing collected and retyped over 7500 pieces of Osler's correspondence, among which are some original letters.

The fonds is separated into three series: Manuscripts, Working Notes and Osler's Correspondence. It also contains photographs, annual reports, publications, clippings, one watercolor painting, one postcard. Osler's correspondence is further arranged in three subseries based chronologically.

Fonds contains correspondence, including letters and postcards from Sir William Osler, clippings and two photographs.

Fonds contains two admission cards of Harry C. Cunningham for the year 1883, one for the course of Microscope in Medicine signed by Sir William Osler and one for a six month ticket to the Montreal General Hospital.

Fonds primarily documents Armstrong’s social life. They consist overwhelmingly of correspondence for the period 1909-1933. Letters from his professional colleagues, such as Sir William Osler, F.J. Shepard, Edward Archibald, William J. Mayo and others in the Mayo Clinic, are concerned largely with personal greetings, association memberships, or Medical Faculty business, particularly honorary degrees. Armstrong's non-medical correspondents include Lord Beaverbrook, Lord Atholstan, Sir Hugh Allan, Arthur Meighen, George Foster and Herbert Symonds. Topics include politics, Armstrong's war work and honours, some medicals matters, and personal news. Appended to this main series are obituaries and letters of sympathy to Armstrong's widow (1933), six photographs, including one of Armstrong in an operating room, and admission cards and diplomas from Armstrong's student years.

Fonds contains correspondence mostly between George Dock and Sir William Osler but also with Lady Osler, W.W. Francis and Archibald Malloch, from 1891 to 1919. The fonds includes 106 letters, originals and carbon copies.

Fonds documents Dr. F.C. MacIntosh's teaching and research activities at McGill. The fonds contains correspondence, newspaper clippings, reprints of publications, photographs, documents related to the International Union for Physiological Sciences, lectures, and student reports. The fonds also contains a dossier on Professor George Ralph Mines (1886-1914) assembled by Dr. MacIntosh from 1982-1986. The dossier includes publications, photographs, obituaries, and autopsy information of G.R. Mines, as well as correspondence regarding his death and a copy of "The short brilliant career and strange death of G.R. Mines," written by MacIntosh in 1985.

The fonds contains correspondence concerning a dinner in honour of Sir William Osler at the University Club, New York, organized by Beverly Chew, M. Taylor Pyne, Edward G. Kennedy, William Augustus White, Frederick R. Halsey and Ernest Dressel North in 1913. The fonds includes 74 original letters. E.D. North managed the correspondence for the event, which included numerous bibliophiles.