A new elucidation of colours, original, prismatic, and material : showing their concordance in three primitives, yellow, red, and blue, and the means of producing, measuring, and mixing them : with some observations on the accuracy of Sir Isaac Newton (1809)
Sowerby, James, 1757-1822 · London : Printed by Richard Taylor and Co. · leaf 72
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Newton, Isaac, Sir, 1642-1727 · Color · Painting -- Technique
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
