| Unidentified photographer {A seated man with a stereoscope and stereocards on the table beside him] n.d. Stereocard National Museum of American History, Smithsonian Institution Id Number: 2012.3033.0913, Nonaccession Number: 2012.3033, Catalog Number: 2012.3033.0913 LL/107385 Title prepared by Alan Griffiths (24 December 2020)
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