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.

File consists of development drawing of floor plans for hospital layout.

File consists of detail drawings for professional club (woodwork, including handrail, ramp of staircase, dado).

File consists of architectural drawings for country house (2 floors, 4 bedrooms, 2 servants' rooms; wood), including:
2 measured drawings: cellar entrance, landscaping, section
5 development drawings: floor plans, fireplace
9 working drawings: foundation plan, floor plans, roof plan, elevations, sections
21 detail drawings: windows, woodwork (including eaves, pilasters, gable trim, verandah), doors and hood, ironwork, shutters, entrance doorway, staircase, fittings, room details, verandah, boat house, gate
3 photographs: 2 finished exteriors, 1 finished interior

File consists of development drawings (floor plans) and folder of specifications for industrial laboratory.

File consists of architectural drawings for retail store and office building as well as 1 file folder of specifications. Drawings include:
1 development drawing; stained glass
13 consultant drawings: floor plans, elevations, sections, showcases, fittings, stair, structure

File consists of architectural drawings for recreational club (alteration: new fireplace in club room), including:
3 development drawings: fireplace, lettering
4 detail drawings: stonework, lettering, ironwork (fender seat)

File consists of architectural drawings for recreational club (alteration: dining room and terrace; proposed addition: dining room balcony, locker room hall and shelter, including:
5 development drawings: floor plans, elevation, billiard room, lettering
2 working drawings: verandah, shelter
1 detail drawing: windows, screen

File consists of architectural drawings for urban house (detached, basement, 2 floors, 4 bedrooms; stone; wood; composite), including:
1 development drawing: floor plans
10 working drawings: floor plans, roof plan, elevations, sections
31 detail drawings: windows, radiator enclosures, fireplaces, doors, door hood, entrances, verandah, eaves, stairs, bathroom, chimneys, brickwork, staircase, woodwork (incl. trim, curtain boxes), railings, plaster cornices, fittings, scuppers, sash, screens
1 shop drawing: sills
9 consultant drawings: property plan, floor plans, roof plan

File consists of architectural drawings for country house, including:
17 measured drawings: floor plans, roof plan, elevations, sections, windows, doors
8 development drawings: site plan, floor plans, section, door, windows, fireplace
10 working drawings: floor plans, elevations
21 detail drawings: eaves, pilasters, windows, entrance, doors, fittings, dormers, wrought iron railings, radiator enclosures, woodwork (including pediment, verandah)