'The Ypres Salient before and after the Second Battle of Ypres, April 22-May 13', First World War, 1915, (c1920). Map showing positions of the allied forces around Ypres in Belgium: French, Canadian and British, the 'Cavalry Corps which took the place of the Central Division on May13', and '"A Division (British; originally Colonel Geddes' mixed brigade)'. The shaded area indicates 'ground won by the Germans as a result of the first great gas attack.' From "The Great World War - A History" Volume III, edited by Frank A Mumby. [The Gresham Publishing Company Ltd, London, c1920]