Photography, stereoscopy. Set of various positive stereoscopic views including a batch on a viewer and Russian views (Russia). Set of views and viewer in Cyrillic (various color views). About thirty positive views laminated on cardboard (some coloured), various subjects: Notre-Dame de Paris, The Louvre, Versailles, one of "A. Braun in Dornach (Haut-Rhin)", Oxford, Windsor, Cologne, Strasbourg, Brussels, etc.