Aerial photograph of Les Petites-Armoises, France, November 3, 1918.Inscription: "U.S. 1A 91Sq. B2703: W. Les Petites Armoise: 289.0-204.0: 3/11/18: 13H: 3500m: 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 Noirval, France, November 3, 1918. Craters from artillery shells are visible.Inscription: "U.S. 1A 91Sq. B2734 W. of Noirval 285.6-299.5: 3/11/18: 10H 2800m 52cm."