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Interior of Stereographic Manufactory (Back)
Courtesy of John Saddy (Auction, Tues. May 23rd & Thurs. May 25th, 2006, # 06-2, Lot 200)
Emanuele Bennici (Facebook, Luminous-Lint page, 21 June 2016) wrote: "It's an 1860 photograph of atelier Alexis Gaudin et Frères, rue de la perle, 9 Paris. The man standing who oversees the work is precisely Alexis Gaudin. The photo is part of a set of four stereocards of the same subject."
For a description of this series - Mark Osterman "Rolling and Burnishing of Nineteenth-century Photographic Prints" IN Constance McCabe (ed), 2005, Coatings on Photographs: Materials, Techniques, and Conservation, (Washington, D.C.: Photographic Materials Group of the American Institute for Conservation of Historic and Artistic Works)