'General Sir William R. Robertson G.C.B., K.C.V.O', c1916, (c1920). 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 Great World War: A History", Volume VI, edited by Frank A Mumby. [The Gresham Publishing Company Ltd, London, c1920]