File includes five documents effected after the death of Roderick Mackenzie, including: a draft of Mackenzie's obituary; an invoice for the purchase of mourning goods; an affidavit testifying to the authenticity of Mackenzie's "testament olographe (holographic testament)" and requesting, on behalf of his widow, that the testament be executed; four documents detailing the division of Mackenzie's estate; and one-year lease for 12 Beaver Hall Terrace made out to Mackenzie's widow.

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).

Printed invitation sent to George: "Principal and Mrs. Dawson request the pleasure of your company, in the Museum of the College, on the afternoon of Wednesday, the 27th inst., at half-past Three. Inauguration of the New Museum."

Invoice for the wages of crew-members of two boats charged to James Morrison for a voyage made to Carleton Island. Signed by Pierre Meziere, lawyer. A previous inventory identifies the crew members as voyageurs and the boats as canoes, with four people per boat - a steersman, a lead, and two middle crew members.

Invoice from Peter Lundey to James Morrison for the purchase and repair of shoes for members of his household. Includes two entries for shoes for an unnamed enslaved Black woman, referred to in the document as "the Neger Wance."

Invoice from Robert Allen to McFarlane & Gibb for tailoring expenses, including mending and the purchase of new clothing.

Contains one ledger book (cashbook), half-filled, for Blackwood who was a retailer in Montréal.