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.

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.”