Ian M. Drummond is Professor of Economics at the University of Toronto, and the author of numerous books, including Imperial Economic Policy 1917–1939 (London, 1974) and The Floating Pound and the Sterling Area, 1931–1939 (Cambridge, 1981).

Norman Hillmer is Senior Historian at the Department of National Defence and Professor of History at Carleton University in Ottawa. He is the author and editor of many works on British-Canadian and imperial relations in the interwar years.