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William
Griggs (1832-1911) was a pioneer of photolithography who developed
a method of printing in colour by first transferring a faint impression
on the paper to serve as a 'key', separating the colours on duplicate
negatives by varnishes, then photolithographing each portion on
a stone, and finally registering and printing each in its position.
From 1868 he produced many beautiful examples of colour photolithography
at his Peckham works, culminating in the plates for Warner's Illuminated
Manuscripts in the British Museum.
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