Newton investigating Light (engraving)
{"Image ImageDescription": "1099578 Newton investigating Light (engraving) by Houston, John Adam P. (1812-84); Private Collection; (add.info.: Newton investigating Light. Illustration for The Illustrated London News, 4 June 1870.); Look and Learn / Illustrated Papers Collection; Scottish,  out of copyright.", "Image Copyright": "Look and Learn / Illustrated Papers Collection / Bridgeman Images"}