A 31 cm by 46 cm, brass plaque that was made for the official opening of Cockcroft Public School in Deep River, ON, which was named after Sir John Cockcroft. The plaque, which was attached to the school walls in 1956, was later removed when the building became a condominium. Plaques honouring the naming of both the Keys Public School and the Cockcroft School were unveiled at a ceremony on October 5, 1956. Both Dr. Keys and Sir John Cockcroft attended the unveiling.
