The Pilot Officer William Kennedy Ferguson Window was erected by his parents in Peterborough's St. Paul's Presbyterian Church and dedicated in 1947. The window consists of two lights, one depicting St. Michael and the other depicting St. George. Above the lights is a dormer with a Royal Canadian Air Force insignia.
St. Paul's Presbyterian Church at 120 Murray Street, Peterborough, was sold by the congregation and subsequently demolished, carefully, in 2019. The window is currently in storage.