Stereoscopic photography set. Two stereoscopic viewers, one - Lot 8

Stereoscopic photography set. Two stereoscopic viewers, one of which is hand-cranked, and over twenty boxes of mainly positive stereoscopic glass plates, medium format approx. 45 x 107 mm. Circa 1914-1918. Examples of subjects: First World War and post-war, bombardments and ruins, trenches, stretcher-bearers, Verdun, Somme, Herbécourt, Maurepas - le chemin creux, corpses, Chemin des Dames, Belgian Front, Argonne, Alsace, Aviation, "Horses killed by an airplane bomb", "Obsèques du Soldat Inconnu", "Verdun - Bataille de Damloup", "Paris - la victoire", "Monsieur Poincaré dans les barbelés", "Avion boche battu avec son pilote", "Train de cerfs-volant", "Avion allemand", "Courses de Taureaux", "Enterrés vivants", "Le Typhus", Artois, Tanks détruits, Tunnel, Port de Souville, Fleury, Champagne, "Petit poste dans les Ruines", Armistice, etc. Some plates missing.