Mortier in stelling tijdens de vliegdemonstratie te Andir, 30 Mei 1939. "Fire power" - "Puissance de feu" - The Canadian Armed Forces : a career with a difference - Les forces armées Canadiennes : une carrière … Before endeavours fade : a guide to the battlefields of the First World War / by Rose E.B. Coombs ; [edited by Winston G. Ramsey]
