Subfonds includes designs for domestic architecture in Montreal (133 architectural drawings, 1907-1910), including alterations to existing structures, comprise the bulk of Hyde's architectural projects documented in the archive. Also included is a proposal for the Mission Church in Montreal, an addition to the Presbyterian church in Valleyfield, PQ and a design for an apartment building in Montreal. The subfonds also contains photographs of the finished exteriors of two designs for domestic architecture (1909).

L'essentiel des projets architecturaux de Hyde représentés dans le sous-fonds se rapporte à de l'architecture domestique à Montréal et notamment à des modifications apportées à des structures existantes (1907-1910, 133 dessins). Il y a également une proposition pour la Mission Church de Montréal, une annexe à l'église presbytérienne de Valleyfield (Québec) et le plan d'un immeuble à appartements de Montréal. Le sous-fonds contient 2 photos de la finition extérieure de deux projets d'architecture domestique (1909).

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.

The fonds chiefly reflects Gordon Edwards' professional practice, both in consortium with various firms and as an individual practitioner, and also reflects his teaching career at McGill University and the Université de Montreal, however there are some files of a personal nature. Correspondence, lighting design proposals, and their accompanying documentation (such as architectural plans) are included. A majority of the files representing his professional projects contain the same types of documents: architectural plans, lighting fixture schedules, illuminance grids, and manufacturer's literature and brochures. In addition, there are some miscellaneous photographs both of professional and personal nature, negatives, and fabric samples.

The correspondence is both personal and business-related; most of it deals with his practice and various projects and proposals, but there is also correspondence relating to legal and banking matters. There are letters from Prime Minister Pierre Elliot Trudeau and Prime Minister Brian Mulroney. There is also correspondence from noted architect Moshe Safdie and Canadian War Museum architect Raymond Moriyama.

Plans include lighting designs for the Supreme Court of Canada, the Outremont Library, and the McCord Museum expansion project.

The fonds includes 27 drawings (1888-1896) of, notably, a house for George Drummond on Sherbrooke Street in Montreal and the Montreal Diocesan Theological College on University Street are documented in watercolour drawings of plans, elevations, and sections. In addition, there are measured drawings of the Hugh Allan house on Pine Avenue West in Montreal, designed by John William Hopkins (1825-1905) in 1861. These drawings were used for Taylor and Gordon's designs for additions to the Allan house. There is also an undated photograph of a measured drawing of the Hugh Allan house. In addition, there are also drawings by Andrew Taylor for the Montreal Maternity Hospital (Centre Hospitalier Ste-Jeanne-d'Arc), 1903. The fonds contains one published volume: Andrew T. Taylor, "The Crowns and Steeples Designed by Christopher Wren," (London: B.T. Batsford High Holborn, 1881)