Aerial photograph of Fort Queuleu, France, September 7, 1918.Inscription: "U.S. 1A 91Sq. B1660: S. W. Ft Queuleu: 387.5-255.7: 7/9/18: 13h 4900m: 52cm."
Aerial photograph of Fort Alvensleben, France, September 7, 1918. Trenches and artillery shell craters are visible in the center of the image.Inscription: "U.S. 1A 91Sq. B1659 Fort Alvensleben: 381.3-260.7: 7/9/1918: 13H 4900m 52cm."
Aerial photograph of Romagne-sous-les-Côtes, France, October 30, 1918. A series of trenches are visible.Inscription: "U.S. 1A 91Sq. B2526 W. of. Romagne-Sous-Les Cotes [illegible] 4.0: 30/10/18: 11H 4800M [rip in photograph]."
Aerial photograph of Brieulles-sur-Bar, France, November 3, 1918. A series of trenches and artillery shell craters are visible in bottom left corner.Inscription: "U.S. 1A 91Sq. B2691: S.E. of Brieulles-sur-Bar: 291.9-301.0: 3/11/18: 10H: 2800m:…