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Anspach, Brooke M. (Brooke Melancthon), 1876- (1)
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Digeon, René Henri, active 1866-1872 (4)
Silbermann, J (4)
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Badoureau, active approximately 1841-1848 (1)
Barrère, M. (Adrien), 1877-1931 (1)
Belin, Auguste, active 1830-1860 (1)
Bethmont, C (1)
Derghi, J. J., active 1866 (1)
Guggenheim, J. H., active 1866-1883 (1)
Miksch, Carl E., 1893-1955 (1)
Werner, J. C. (Jean Charles), active 1830-1860 (1)
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![John Phillips. Wood engraving by [J. B.], 1865, after J. Guggenheim.](https://iiif.wellcomecollection.org/image/V0004645/full/420%2C/0/default.jpg)
![Optics: crystals exhibiting interference colours. Colour mezzotint [?] by R.H. Digeon, ca. 1883, after J. Silbermann.](https://iiif.wellcomecollection.org/image/V0025370EL/full/282%2C/0/default.jpg)
![Optics: crystals exhibiting interference colours. Colour mezzotint [?] by R.H. Digeon, ca. 1883, after J. Silbermann.](https://iiif.wellcomecollection.org/image/V0025371/full/282%2C/0/default.jpg)
![Optics: colour scales for violet and yellow. Colour mezzotint [?] by R.H. Digeon, ca. 1868, after J. Silbermann.](https://iiif.wellcomecollection.org/image/V0025372/full/282%2C/0/default.jpg)
