ジャン＝バティスト・カミーユ・コロー
Clark's art collection included works by Eugène Delacroix, Jean-François Millet, Jean-Baptiste-Camille Corot, John Constable, François Boucher and Charles-François Daubigny. It was reported that he spent $200,000 () for the Gobelin tapestries owned by Prince Murat and $350,000 () for those of the Earl of Coventry.