BCC124760 Elevation of the chimney section of the Parade Chamber, in the Duchess of Orleans\' apartment at the Palais Royal in Paris, from Diderot\'s Encyclopaedia, pub. 1762 (engraving) by French School, (18th century); Private Collection; (add.info.: rooms decorated by Pierre Contant d\'Ivry in 1755-57;); Calmann & King Ltd; French, out of copyright.