Series contains materials relating to the estate of Ratz Brothers Business, mostly pertaining to the work of John and George Ratz. Includes correspondence, tax records, receipts and invoices, cheques, ledger books, land deeds and legal documents.

Material related to the estates of George Ratz, Clara E. Ratz and Elmer Ratz. Includes statements of accounts, correspondence, blueprints and legal documents.

Material related to the Ratz family history and genealogy. Includes artifacts, photographs, genealogy research notes and booklets, correspondence, a diary excerpt, press clippings, and ephemera.

Series contains materials relating to the estate of Clara Ratz. Includes correspondence, tax records, insurance documents, and lists of assets.

Series contains materials relating to the estate of George Ratz. Includes correspondence, tax records and receipts.

Material documenting Herbert Ratz's professional activities in and outside his role as university Professor and administrator. Includes certificates, curriculum vitae, copies of presentations and publications, sabbatical and fellowship applications and teaching material.

Series contains materials relating to the estate of John Ratz. Includes correspondence, tax records, receipts and invoices, cheques, ledger books and legal documents.