171-GRIMM (Friedrich Melchior von), DIDEROT (Denis). Correspondence littéraire, philosophique et critique, adressée à un souverain d'Allemagne, depuis 1753 jusqu'en 1769. [Followed by] From 1770 to 1782. [Followed by] During part of the years 1775-1776, and during the years 1782-1790 inclusive. Paris, Longchamps, F. Buisson [then] F. Buisson, 1812-1814, three parts in 17 vol. in-8, approx. 520 pp. per vol. three indexes (one per part), ivory vellum, ornate ribbed spine, gilt roulette with foliage decoration framing the boards, iron with a lion holding an urn in the center of the boards, inner roulette (period binding). First edition. A complete set of this famous and important literary correspondence. It is complete with its three parts and its Supplement. "Grimm is not the inventor of literary correspondence: handwritten periodicals intended for an elite clientele, princely and foreign. He only gave them their classic archetype, thanks to collaborators who immortalized his own, Diderot in the forefront" (François Moureau). Upper spine split on volume 1, beginning of split on upper spine of volume 6, some foxing. A fine copy, however. Originally owned by a member of the Colquhoun clan (Scottish family) with their bookplate. It later passed into the library of Edmond Lebee (bookplate).