| Levi L. Hill Experimental colour reproduction of a European colour lithographic print of a man fallen from his horse 1851-1856 (ca) Hillotype, with hand-applied colour National Museum of American History, Smithsonian Institution Accession no: [requested] LL/41523 Colours captured on a Daguerreotype plate using an experimental process. Using X-ray and infrared analysis this plate revealed that lead and bismuth pigments had been applied hand-applied to the saddle area.
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