Fonds consists of correspondence, financial records, certificates, school workbooks, two small watercolour paintings, and photographs. The material is about MacInnis family events and relationships, and the activities and accomplishments of individual family members. The fonds has been arranged according to the family member responsible for receiving or creating the records: Martin and Margaret MacInnis, Jessie MacInnis, Carlyle MacInnis, and John William Fraser. A fifth series contains an account book of the Brackman-Ker Milling Company.