The Hortense Douglas Cantlie fonds is comprised mainly of medical illustrations and drawings (1924-1935) including her illustrations as a student at John Hopkins University, as well as two portfolios of about 37 charcoal sketches completed, while she studied art in Montreal and New York. Other material consists of three medical illustrations file books (one with many photographs of illustrations) dated from 1926 to 1952 with illustrations also by other artists, reprints of articles with Hortense Douglas Cantlie illustrations (1924-1934), one medical illustration signed Ruth Foster, a sketch book with a preliminary drawing of Brain Children (1950's), a photo of a stained glass window designed for the Royal Victoria Hospital (1927-1928) and reproductions of prints by Max Brödel. There are reprints of an article written by Hortense Douglas Cantlie, The Reproduction of Pathological Specimens by the Use of the Wax Moulage (1929), two book illustrations in colour, one by Hortense Douglas Cantlie and another by J.M.T. Finney, a case of drafting instruments used by Hortense Douglas Cantlie, photographs of her illustrations (1926-1928) for a book by Wilder Penfield, as well as other negatives, and prints of medical illustrations.