CHT322573 Francois-Jean de Beauvoir, Marquis de Chastellux (oil on canvas) by French School, (18th century); Private Collection; (add.info.: Francois Jean de Chastellux (1734-88); French soldier and major general in the American Revolutionary War; in 1779 he accompanied General Rochambeau in the French expeditionary forces aiding the American army; friend of Jefferson and Washington; in 1774 wrote philosophical essay on happiness \'De la Felicite Publique\'; praised by Voltaire and resulted in the offer of a seat in the Academie Francaise in 1775; attempt to prove that there is progress and hope in the world; volunteered as a teenager for a trial of smallpox vaccine;); 穢 Archives Charmet; French, out of copyright.