si-national-portrait-gallery: Thomas and Frances Eakins, Unidentified Artist, c. 1851, Smithsonian:
si-national-portrait-gallery: Thomas and Frances Eakins, Unidentified Artist, c. 1851, Smithsonian: National Portrait GallerySize: Image/Sight: 9 × 6.6 cm (3 9/16 × 2 5/8")Medium: Quarter-plate daguerreotypehttps://npg.si.edu/object/npg_NPG.80.248 -- source link
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