The lodge's records consist of a registration book giving the member's name, address, occupation, age, birthplace, wife's name, children between ages of 5 and 15, name of beneficiary, and occasionally remarks on the death of the member of cancellation of membership. Registration books survive from Primrose Lodge No. 49, 1887-1945, Denbigh Lodge No. 96, 1889-1944, Brittanic Lodge No. 113, 1890-1937 and Monarch Lodge No. 182, 1893-1948. Stray items of correspondence from banks or businesses may be found between the leaves of some volumes. The archive also contains two charters from Primrose Lodge, 1887.

The project files which occupy most of the archives of J.T. Donald and Co. fall into two series: ordinary business and special assignments. Both series contain the firms report's, and correspondence. Special assignments were largely connected with wartime armaments production. A few files concern work for the Imperial Munitions Board in World War I, but most consist of reports for the Chemical and Explosives Branch of the Department of Munitions and Supply, 1939-1948. Ordinary projects involve consultation for food, pulp and paper, petroleum, and chemical manufacturies, as well as for some government departments, 1888-1940. Outgoing correspondence from 1881 to 1909 is contained in letterbooks. A file of legal documents, 1924-1946, refer to claims against the company, agreements, and partnerships. Also included are an undated notebook on chemical analysis, and scrapbooks and files of newsclippings of professional interest (e.g. reports of explosions caused by oil and gas) covering the period 1916-1958. There are also reports on mining and energy sources prepared by Donald alone and also in partnership with J.H. Ross for various private and government bodies.

The fonds contains Margaret Gillett's source materials and drafts for her book Dear Grace, a Romance of History. The source materials include original letters from William C. Little to Grace Ritchie written between 1889-1893.

Architectural drawings, photographs and professional correspondence documenting the architectural practice of the Montreal architect Robert Findlay (1859-1951) are found in the CAC archives.

Le fonds de -la CAC réunit des dessins architecturaux, des photographies et de la correspondance professionnelle témoignant des activités de l'architecte montréalais Robert Findlay (1859-1951).

File list:
"Architectural Drawings, 1891-1927, 204 drawings." Twenty-five projects, primarily for domestic architecture in Montreal as well as summer residences in the country surrounding Montreal, are found in the archive. Also included are designs for Calvary Church in Westmount.
"Photographs, 1900-17, 86 photographs." The archive contains photographs documenting finished exteriors and interiors of eighteen projects, mainly domestic architecture. In addition, there are photographs of Calvary Church, Westmount Public Library and the Sun Life Assurance Co. building.
"Professional Correspondence, 1900, 6 cm." Correspondence and specifications regarding the design and execution of the R. W. Reford house and the stables for the F. W. Molson house, both located in Montreal, are included in the archive.

"Dessins architecturaux, 1891-1927, 204 dessins." Vingt-cinq projets, surtout d'architecture domestique à Montréal, de même que des résidences d'été construites dans les environs de Montréal. Le fonds comprend également les plans de l'église Calvary à Westmount.
"Photographies, 1900-1917, 86 photos." Le fonds contient des photos représentant la finition extérieure et intérieure de 18 projets, surtout d'architecture domestique. On y trouve également des photos de l'église Calvary, de la Bibliothèque municipale de Westmount et du siège social de la Sun Life.
"Correspondance professionnelle, 1900, 6 cm." La correspondance et le cahier des charges de la maison R.W. Reford et des écuries de la maison F.W. Molson, toutes les deux situées à Montréal.

These scattered items of correspondence deal with Porter's resignation from the Cincinnati, Hamilton and Dayton Railroad Co. (1892), stock purchases (1907) and other financial matters (1927-1928).

The Nobbs fonds consists of the work of Percy Erskine Nobbs, George Taylor Hyde, Nobbs and Hyde, Nobbs and Valentine, and Nobbs and Nobbs. 526 projects are documented in the Percy Erskine Nobbs Fonds. Architectural drawings form the core of the fonds, providing a comprehensive listing of the drawings by Percy Nobbs and his associates. Arranged chronologically, the inventory reflects respectively the development of the partnerships Nobbs and Hyde (1910-1944), Nobbs and Valentine (1945-1950), and Nobbs and Nobbs (1950-1960). Hugh A. I. Valentine worked only briefly with Nobbs, spending the bulk of his career with the Bell Telephone Company of Canada. His commissioned drawings and student notebooks cannot be directly related to his work with Nobbs, but are nonetheless described in subfonds 8. Subfonds 6 and 7 describe Percy Nobbs's personal papers and three-dimensional objects designed by him which are in the Canadian Architecture Collection.

Correspondence 1921-1931 concerning Simon McTavish; official copies of legal documents including estate inventories, lawsuits over the McTavish estate, and Simon McTavish’s will; notes for Baylis’ study of McTavish; numerous petitions and newspaper clippings on the state of the McTavish monument and tomb (Peel St., Montreal), and a typescript of his text concerning Simon McTavish. Also two letters from Ignatius Donnelly, 1899, and a letter 1895, from J. Middleton to John Doyle about 19th century gardening in Montreal and the funeral of Judge James Reid.

Greeley's papers comprise 15 letters, and the original typescript, with handwritten corrections of Chapters 11-18 of Arctic Discoveries.

Fonds consists of six letters, with four manuscript letters from Rilke written between 1896 and 1922 and two discussing letters discussing these. The four letters from Rilke are addressed to various correspondents, including on 8 November 1896 to the author Gabriele Reuter regarding her book, 15 October 1904 to Anette Vedel, and 9 July 1907 to an unidentified correspondent. The fourth letter dates likely from August or September 1922 and is addressed to Elfriede Nicolaus. The two later letters which discuss the Rilke letters include one dated 13 December 1954 from Hedvig Wahlgren regarding the date of the 1922 letter to Nicolaus and one dated 29 November 1955 from Ruth Fritzsche (née Rilke) to McGill Librarian Richard Pennington.

This archive contains letters and copies of letters, from the Wisdom sisters to one another, describing their experiences at Royal Victoria College, 1900-1908. There is also a letter from Stephen Leacock, accepting an invitation to deliver an address, and two from Hilda Oakeley to Mrs. Wisdom. Programmes (particularly of R.V.C. plays and sports events), clippings, and photographs are also included. There are also course notes for C.W. Colby's Renaissance history and William Caldwell's history of modern philosophy.