ALEMBERT Jean Le Rond d' (1717-1783).
L.A. signed at head, August 7 [1770], to notary Guillaume-Claude DELALEU; 1/3 page in-4, address.
"Mr. d'Alembert has the honor to send to Mr. Delaleu 2 louis for Mr. Mercier, author of various works." [This is the subscription of Louis-Sébastien
MERCIER for the statue of VOLTAIRE].