Stereograph, "Preparing to Reconnoitor the Enemy's Position – Officers Entering the Cradle of a Captive Balloon," Keystone View Company, circa 1914-1918. Image features a group of soldiers gathered underneath a tethered observation balloon. Caption…
Stereograph, "A Flock of French Fliers Ready for Action on the Battle Line. Nieuport Airplanes with Guns," Keystone View Company, circa 1914-1918. Image features French pilots and Nieuport biplanes at an airfield in France. Caption on verso describes…
Stereograph, "Lieut. LeMaitre of French Aviation Forces in America, Explaining Mechanism of 'Nieuport' Aeroplane. Fortress Monroe, VA," Keystone View Company, circa 1914-1918. Image features Lieutenant LeMaitre explaining a mechanism on a Nieuport 17…
Stereograph, "Zeppelin Flying Over a German Town – Lower Valley on the Rhine," Keystone View Company, circa 1914-1918. Image features a zeppelin in flight above buildings in Germany. Caption on verso describes the development and military uses of…