Price: $15,000 French economist; leading member of the Physiocratic school and author of many economic treatises. Autograph Letter Signed, du Pont de Nemours, one full page, octavo, New York, December 24, 1800. In French, to Félix Faulcon, an old friend in Paris. On the verso is a letter written by one of his daughters-in-law. “You … [ Read More ]