'General Sir William Robertson', 1910s, (1919). Portrait of British soldier William Robert Robertson (1860-1933), general and later field marshal. Robertson was Chief of the Imperial General Staff during the First World War, 1916-1918. From "The History of the Great European War: its causes and effects", Vol. V, by W. Stanley Macbean Knight. [Caxton Pulishing Company, Limited, London, 1919]