The fonds consists of professional papers, architectural and silver artifact photographs, drawings, teaching materials, research files on historical buildings in Québec, and heraldry designs for Boy Scouts. The bulk of the fonds consists of professional papers and three-dimensional objects (1889-1949). These have been arranged into twelve categories based on function: notes by Traquair for architecture curriculum courses; personal items of Traquair; signed notes of Gordon Antoine Neilson; signed notes of Marius Barbeau; Boy Scouts' flag design and correspondence; drawer list of drawings of French-Canadian architecture as arranged by Traquair; source clippings/publications; student sketchbooks; historic notes on individual places; publications of Traquair; publications by others working in the field or allied fields; line blocks. 14 original drawings in the fonds date from 1901-1921 and include watercolours and drawings of Egypt and India as well as details and sketches of churches in England and Italy. There are also approximately 550 measured drawings of historic buildings in Montréal, Québec City and elsewhere in the province made by Traquair and his students. Approximately 5 m of photographs portray landscapes, historical buildings, furnishings, and rural people at work in Québec; some copies of historical prints and photographs are also included. The historical architecture of Québec is also the subject of 1 m of plastic negatives, and a further 40 cm shows old Québec silverware.

Fonds consists of two undated architectural drawings and one photograph of Drummond Street houses, taken approximately 1890. Architectural drawings are elevations of two houses located on Drummond Street in Montreal, designed for Mr. Lighthall.

Folder contains 1 photograph of the perspective ; Folder also contains 1 drawing : 1 text on the Montreal Board of Trade Building concerning the Montreal Board of Trade Building in Montreal

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.

Folder contains 4 photographs : 4 of the exterior concerning the Royal Victoria Hospital & Royal Victoria College in Montreal

Folder contains 10 photographs : 2 of the exterior, 3 of details, 3 of the plan, 2 of the elevation ; Folder also contains 2 drawings : 1 of the exterior, 1 ID sheet concerning the house of Sir Henry Vincent Meredith in Montreal

Folder contains 5 photographs : 1 of the exterior, 1 of the perspective, 1 of the plan, 2 of the elevation ; Folder also contains 2 drawings : 1 of the exterior, 1 ID sheet, and 1 text concerning the house of James and J.K.L. Ross in Montreal

Folder contains 4 drawings : 1 of the perspective, 2 of the exterior, 1 text concerning the Château Frontenac in Québec City

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.