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

Fonds contains the admission cards of R.T.E. Macdonald for his complete studies in Medicine at McGill, 1878-1881. The fonds includes admission cards, a receipt, certificates and some notes from W.W. Francis.

Fonds contains the admission cards of William Forrest for the Montreal Medical Institution Library, the Montreal General Hospital and the lecture of Anatomia Physiologia et Chirurgica of John Stephenson, in 1824-1825. The fonds includes three admission cards.

Fonds contains the notebook kept by Walker Herbert Drury of his bacteriology laboratories while a student at McGill University, from 1906 to 1908, but mainly 1906.

Fonds contains two diaries for 1917 and 1918, and one address book of Dr. Robert Arthur Bowie during World War I. It includes 29 diaries written by his wife Pearl Blanche Bowie and by his daughter Margaret E. Bowie, from 1916 to 1951. In addition, there are a large number of photographs and negatives.

Fonds contains a manuscript, entitled "Remarks on the Osteology of Alexander Monro by himself", written by Dr. John George Bethune who transcribed an old damaged manuscript found in a trunk in the garret of the steam factory of Bethune's father in August 1848. The damaged manuscript was, according to Bethune, from one of three famous physicians, three successive generations of an Edinburgh family, who all bore the name Alexander Monro.

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 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.

Yaffe's papers reflect his interest in the history of McGill and of chemistry, as well as his involvement in the construction of the Otto Maass Chemistry Building. Historical materials include photographs of F.M.G. Johnson, cartoons of McGill personalities as well as eight original Johnson cartoons; approximately 60 photographs of a chemical laboratory near Trenton, Ontario (ca 1910); snapshots of the Chemistry Department Ph.D. Open House (1967); portraits of McGill chemistry professors; clippings and biographical notices of McGill and chemistry interest; and an autograph document by Otto Maass agreeing to a division of profits from a discovery with W.H. Hatcher. Files on the Otto Maass building largely comprise photographs (approximately 115) of the building under construction and of the opening ceremonies as well as speeches, press notices, and related correspondence.