585843 Jedediah Buxton, who, without training, could solve the most difficult problems in arithmetic by the strength of his memory alone (engraving) by English School, (18th century); Private Collection; (add.info.: Jedediah Buxton, who, without training, could solve the most difficult problems in arithmetic by the strength of his memory alone; published 22 November 1781); Look and Learn / Peter Jackson Collection; English, out of copyright.