CHT449003 Title page of the first volume of the \'Encyclopedia\' by Denis Diderot and Jean le Rond d\'Alembert, 1751 (engraving) by French School, (18th century); Bibliotheque Municipale, Amiens, France; (add.info.: Page de titre du premier tome de l\'Encyclopedie ou Dictionnaire Raisonne des Sciences, des Arts et des Metiers; Denis Diderot (1713-84); Jean le Rond d\'Alembert (1717-83); \'Encyclopedie first published 1751-72 and comprised 32 volumes and was the work of 150 collaborators, including Voltaire, Montesquieu, Rousseau, Condillac and Jaucourt; Siecle des Lumieres;); 穢 Archives Charmet; French, out of copyright.