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.

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 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.

The fonds consists of Dr. Roland's files principally in relationship to his research on Sir William Osler and to his activities in the American Osler Society

Fonds shows Dr. Philip Franklin's relations and activities with Sir William Osler regarding the Post-Graduate Scheme in England and the American Hospital in England during WWI. The fonds contains letters, telegrams and an agenda and printed material regarding a meeting about the American Hospital.

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

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 documents the friendship between Mrs. Alice Russel and Dr. Abraham Flexner. It also includes documents collected by Mrs. Russel on Sir William Osler and Maude Abbott. The fonds contains correspondence and newspaper clippings.

Fonds consists of personal letters between Howard family members and close relations (C. P. Howard, William Osler, Grace Osler, the Wright family etc.). Subjects range from wedding engagement congratulations for C. P. Howard and Otillie Wright, personal introductions from Grace Osler, to professional appointment letters. There are original photographs (as well as a few copies) of candid Osler family moments, formal family portraits, hospital photos of Osler at work, as well as several professional portraits of William Osler by prominent Montreal photographers. The fonds also includes miscellaneous reprints, booklets, and various other publication materials such as R. P. Howard's valedictory addresses to several graduating classes, personal copies of medical case studies, Olser's handwritten medical notes from 1875-1878, as well as original caricature sketches by Edward Revere Osler. In addition, there is a small photo album (in its own presentation box) with John Hopkins Hospital staff portraits (names included) from 1902-1903. The photo album is stamped "C.P.H." on the front cover.\nIncluded in the fonds are the following books: The Holy Bible (Oxford, 1912), The Poems of Edgar Allan Poe (Diamond Edition, New York, 1881), and Robert Bridges The Spirit of Man (Longmans Green and Co., London, 1916).

Fonds documents Dr. Lella's research activities while at McGill.