Contemporary copy of ‘À M. le prince G. ambassadeur à La Haye’, written in the hand of Durey de Morsan and corrected by Voltaire. The letter dates to 19 June 1773 and was written from Ferney. It is one of the “lettre véritables” of the Commentaire historique sur les œuvres de l’auteur de La Henriade (1776).