ESSEX, James W., Victory in the St. Lawrence. Canada’s Unknown War. Erin, Ont. The Boston Mills Press, 1984. 159 p. / HADLEY, Michael L., U-Boats against Canada. German Submarines in Canadian Waters. Kingston et Montréal, McGill-Queen’s University Press, 1985. xxii-360 p. - Gagnon, Jean-Pierre (Revue d'histoire de l'Amérique française)