The fonds contains the company's business correspondence related to the importation of food products, essences, and spices from international manufacturers, and other business expenditures, as well as some correspondence with government regulators regarding food labeling and quality. In addition, some letters are from charitable and cultural organizations to which the company donated. Some personal correspondence of Henri Jonas is included, as well as numerous restaurant bills and and menus, including for the Montreal Hunt Club.

Chiefly found is incoming correspondence with product suppliers and invoices for various services, including car repair, advertising, stationary, funeral arrangements, and photography. Suppliers include companies from France, Germany, Norway, UK, Italy, Sicily, Hungary, China, India, and Spain. Products include essential oils, soaps and luxury food products such as sardines, truffles, preserves, jam, Hungarian paprika, Chinese tea, olive oil, caviar, liqueurs, foie gras, sardines, and ketchup. Two Montreal-area manufacturers are represented, with a catalogue from Couvrette Sauriol Limitée (1937) and a brochure for the Stuart Brothers. Included is one letter from postwar France soliciting renewed a commercial relationship following the allied victory (Royal Champignon). There are also bulletins from and correspondence with, including one outgoing letter, the Canadian Department of Agriculture regarding quality and labelling of canned fruits and vegetables.

A few letters are personal in nature and addressed to Henri Jonas himself. There are also telegrams and letters from Canadian organizations such as the Pacific Railway Company, and Canadian societies and organizations to which the company donated money (Canadian Society for the Prevention of Cruelty to Animals, Montreal Orchestra, Hospital for Sick Children London, Salvation Army, McGill University Centennial Endowment).

Some of the company's advertising materials are also found, as well as food labels for products including mushrooms, wine, truffles, olive oil, sardines, and lemonade).

Fonds consists of Fenwick's scrapbook which contains newspaper clippings and some of his letters to the editor on topics ranging from medicine to general interest to humour. Five letters from medical conferences in Québec and Ontario, as well as some engraved portraits of medical men are also included.

Fonds contains a notebook of G.B. Drayton of case records, autopsies, prescriptions, lecture notes and personal memoranda.

Fonds contains Frederick Holland Mackay's lecture notes from several courses of medicine for the session 1910-1911. They are W.F. Hamilton on medicine, H.A. Lafleur on the respiratory system, C.F. Martin on neurology and F.G. Finlay on heart conditions. The fonds includes one student notebook with an inscription from W.W. Francis and Mackay to W.W. Francis.

Notes d'un voyage à Paris.

Eve's papers are overwhelmingly concerned with his work as a teacher. The greater percentage are lecture notes, with some research materials, professional and personal correspondence, and photographs. His lecture notes fall into two categories: university lectures and popular courses and addresses. The university lectures are represented by thirty bundles of notes on radioactivity, physics of solids, relativity, and astrophysics dating from ca. 1909 - ca. 1930. The popular lectures date largely from the 1920s and 1930s. They deal with radioactivity, engineering physics, military applications, astronomy, historical topics, and the relation of science and religion, and were delivered before a wide range of groups, from the McGill Physical Society to schoolchildren. Apart from reprints, Eve's research materials consist of a notebook on solid geometry from his university days (1881), three laboratory notebooks (1909-1915), correspondence and a notebook concerning research in the U.S. Department of Mines (1927), his diary of a visit to the United States in 1929 undertaken to survey geophysical prospecting methods, and some files of correspondence, graphs, reports, notes,and photographs on ultra-violet light, eclipses, radio research, seismic activity and quantum theory (1922-1934). Closely related to these are a few files of professional correspondence (1915-1932) regarding seismic shocks, particularly in relation to the Mount Royal tunnel, the eclipse of 1932, Niels Bohr's work (including a letter to Eve from Bohr) and the scientific publications of Eve and others. Files of correspondence, reports and programmes document Eve's activities in various organizations, such as the Silberstein Institute of Physics (1921), the Air Research Committee (1920-1922), the Canadian Engineering Standards Association (1920-1927) and the Pacific Science Congress (1930-1935). Other papers concern his work in elementary education both in public and in private schools; they contain newspaper clippings about Eve's publications and career, and correspondence and notes relating to his retirement (1935) and photographs.

This collection consists of twelve documents concerning the settlement of the Algonquin and Nipissing First Nations at Oka, Quebec, some in Anishinaabemowin, 1831-1853. There are also letters and documents mostly addressed to N. O. Greene, a solicitor and activist, concerning the Indigenous communities of Oka, 1878-1880.

Apart from some personal and obituary materials, Kelly's papers concern his career as an infantry officer in Princess Patricia's Canadian Light Infantry during World War I. A pocket diary records his experiences in 1918 and a copy of a photograph album shows scenes around Mons in 1914. Printed souvenirs, Christmas cards, certificates and medals supplement these documents. Other photographs show Kelly and his family, and the McGill Observatory.

The collection contains materials related to a bicycle relay ride between Sarnia, Ontario, and Montreal, Quebec, held June 15-16, 1894 by the Canadian Wheelmen's Association (CWA) under its president, A. T. Lane, an early importer of bicycles to Canada who is credited by many contemporary sources as the first person to ride a high wheel bicycle in North America. The relay ride was organised as a promotional event for the CWA's annual meet, hosted in Montreal that year. The collection contains a newspaper article from the Toronto Mail (June 16, 1894) detailing the route and listing the participants, as well as a leather travel satchel used to carry a congratulatory letter to the president of the Canadian Wheelman's Association to be signed by the mayors of the cities and towns along the route. The satchel is embossed with the text: "Sarnia to Montreal relay ride, 1894." The collection also contains a published programme from the CWA annual meet, entitled, "Our city and our sports : souvenir and official programme of the 12th annual meet of the Canadian Wheelmen's Association, Montreal, July 1894."

Fonds shows A. R. Prendergast's 1902 work in histology course given by Professor George Wilkins and his Lecturer N.D. Gunn. It contains a histological sketching book with coloured pencil drawings from Prendergast.