Series consists of subject files created and maintained by the Architectural Conservancy of Ontario : North Waterloo Region Branch on various buildings in the Waterloo Region in surrounding area, as well as on local organizations and heritage concerns. Files include clippings, photographs, written historical records, etc.

Series consists of materials created and accumulated by the Architectural Conservancy of Ontario : North Waterloo Region Branch relating to projects and events put on by the organization or attended by members, including workshops, presentations, newsletters, etc.

Series consists of materials created and accumulated by the Architectural Conservancy of Ontario : North Waterloo Region Branch relating to their operations, including meeting minutes, financials, correspondence, etc.