Map overlay of an unknown aerial image, marking the location of batteries in the Verdun region of France, June 5, 1917.Inscription: "Batteries before demolition firing B. Battery of 2 cannon of 210mm...hidden in an infantry position. Verdun Region.…
Aerial photograph of Brieulles-sur-Bar, France, November 3, 1918. Inscription: U.S. 1A 91Sq B2693 N. of Brieulles-Sur-Bar 291.5-302.0: 3/11/18: 10h: 2800m : 52CM."