The battle front in France and Belgium.Curtiss Aeroplane and Motor Corporation[1917]"Supplement to Curtiss "Flyleaf," Curtiss Aeroplane and Motor Corporation, Buffalo, N.Y., U.S.A."Inset: Enlarged scale map of territory between St. Quentin, La Fère and Laon. Scale [ca. 1:140,000].On verso: How to recognize theRelief shown by shading.cartographic