| Washington Teasdale [Attributed to] Washington Teasdale Using a Microscopical Slide Micrometer or Similar Instrument 1902, October Gelatin silver print 15.2 x 10.7 cm Museum of the History of Science Gabb Collection, Inventory Number: 34237, Accession Number: 1949-10 LL/93976 Early gelatine print. Portrait of Washington Teasdale, head and shoulders, seated at a table using a microscopical slide micrometer or slide mounting instrument or similar. Vertical format. Possibly a self-portrait.
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