Correspondence, legal documents, photographs, ephemera and genealogical records, relating to Jacob Hailer (1804-1885), Henry Wagner (1793-1867), Jacob Wagner (1824-1858), Louis Henry Wagner (1857-1945), their families and the related Staebler Family, Biehn/Bean Family and Breithaupt Family.

Fonds consists of materials created and accumulated by the Architectural Conservancy of Ontario : North Waterloo Region Branch. Includes operational files including minutes and finances, project and event files and ephemera, as well as a large body of subject and clipping files on local buildings, environmental bodies, and heritage organizations.