Fonds shows Thomas W. Reynolds' activities as a medical student through his admission tickets for his complete medical formation. It contains 39 admission cards signed by or printed for the teachers, among them William Osler.

Fonds shows the relationship between Thomas R. Boggs and William Henry Welch, one of the founders in the establishment of the Johns Hopkins Medical School in Baltimore. The fonds contains letters from Welch to Boggs, from 1910 to 1927 concerning A Century of Charades, a book of riddles by William Bellamy.

Fonds contains notes taken by Thomas McCrae between 1897 and 1904 at William Osler's clinics at the Johns Hopkins Hospital, Baltimore.

Fonds shows Thomas Gibson's interest in history of medicine. It contains papers on John Palmer Litchfield and on the General Council of Medical Education and Registration of Upper Canada. Dr. Gibson's notes on the translation of Theodore Turquet de Mayerne of the Opera Medica of Joseph Brown, ed. 1700. Correspondence.

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.

Fonds shows Dr. Thomas C. Brainerd as a surgeon with the US Army during the Civil War. The fonds contains an invoice issued by the US Army, a form for examining a recruit and a report on sick and wounded.

Fonds documents Dr. Theodore L. Sourkes' professional activities.

Fonds contains the case histories of Dr. S.E. Goldman submitted to the American College of Surgeons in February 1952, and include drawings and photographs. The fonds contains a bound book of case histories.

The Sir William Osler Collection, distinct from the Bibliotheca, is an extensive archival holding of Osler's correspondence (including eighteen hundred original letters), daybooks, accounts, engagement books, legal documents, book invoices, membership certificates, notebooks, lectures, addresses, newspaper clippings, photographs, books with manuscript additions, and miscellaneous loose items formerly inserted into individual books in his library. The collection also contains various family papers, including correspondence of Lady Grace Revere Osler and Edward Revere Osler.