Sir John Herschel, inventor of the cyanotype and the blueprint (the first form of photocopying) | John herschel, Julia margaret cameron, Portrait
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Sir John Herschel Invents Cyanotypes, the Basis for Blueprints : History of Information
John Herschel Correspondence
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Sir John Herschel. Photograph by Julia Margaret Cameron, 1867. | Wellcome Collection
Julia Margaret Cameron | Sir John Herschel | The Metropolitan Museum of Art
From blue skies to blue print: Astronomer John Herschel's invention of the cyanotype
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John Herschel - Wikipedia
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John Herschel – A Modest Giant of Science | Random Phoughts
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Herschel, John Frederick William | Romantic Circles
John Herschel - Wikipedia
Remembering Sir John F.W. Herschel (1792–1871) | Royal Museums Greenwich
John Herschel by Sheila Terry/science Photo Library
John Herschel, British astronomer - Stock Image - H408/0354 - Science Photo Library
John Herschel | Babbage Engine | Computer History Museum
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John Herschel - Wikipedia
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File:Sir John Herschel by Julia Margaret Cameron.jpg - Wikimedia Commons
