619520 The Duke giving a lesson to Captain Mazin, from \'The Method and New Invention of Dressing Horses\' by William Cavendish, published 1737 (2nd edn) (aquatint) by Diepenbeeck, Abraham Jansz. van (1596-1675) (after); Private Collection; (add.info.: William Cavendish, 1st Duke of Newcastle (1592-1676) produced \'A New Method and Extraordinary Invention to Dress Horses and Work them According to Nature\' on Manege riding as an exile in the Low Countries following the civil war. It was first published in 1657.); The Stapleton Collection; Flemish, out of copyright.