[Barbe-Marbois, Francois, Marquis de]. Complot d'Arnold et de Sir Henry Clinton contre Les Etats-Unis d'Amerique et contre le General Washington. September 1780. Paris: Chez P. Didot, 1816. 1st edition. Xliv, 184 pp. Map frontis of West Point. Two engraved portraits (Arnold and Washington). Original unprinted wrappers. Paper label on spine. A study of Benedict Arnold's treason. Howes B-114; Sabin 3302. A nice copy.