John Diefenbaker, Hugh Aird and Allan Macmillan standing in a field, England, November 1916. JGD inscription on reverse of copy reads: "Nov 5th 1916--Centre--Lieut Hugh Aird of Saskatoon (wounded) May 1917--Right--Lieut M. Allan MacMillan of Saskatoon--Killed in action-May 1917 (His brother was Dr. MacMillan of Charlottetown-afterwards Premier of P.E.I.)."