Keywords: aviation aircraft airplane biplane military aviation militaryaviation the great war thegreatwar great war greatwar world war i worldwari world war one worldwarone the first world war thefirstworldwar wwi ww1 outdoor View of an unidentified biplane, taken from another aircraft, silhouetted by the clouds (undated) [Photograph collected by or taken by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina View of an unidentified biplane, taken from another aircraft, silhouetted by the clouds (undated) [Photograph collected by or taken by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina |