Columbia subject headings:
Harvard subject headings:
Spain--History--Civil War, 1936-1939--Participation, Canadian.
Spain--History--Civil War, 1936-1939--Regimental histories.
Spain. Ejército. MacKenzie-Papineau Battalion--History.
Princeton subject headings:
Spain--History--Civil War, 1936-1939--Participation, Canadian.
Spain. Ejército Popular de la República. Brigada Internacional, XV--History.