STC98437: The Marquis of Newcastle on Horseback Demonstrating Dressage Steps, plate 22 from 'The Method and New Invention of Dressing Horses' by William Cavendish (1592-1676) Marquis of Newcastle, engraved by Theodor van Kessel (c.1620-p.1660) 1657 (aquatint), Diepenbeeck, Abraham Jansz. van (1596-1675) (after) / Bridgeman Images