| Washington Teasdale Portrait of James Glaisher 1880s (probably) Cyanotype 10 x 7.6 cm Museum of the History of Science Gabb Collection, Inventory Number: 85836, Accession Number: 1949-10 LL/93981 Cyanotype (blueprint) positive. Copy of portrait (from a print or photograph) of James Glaisher, original image oval.
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