BARBÉ-MARBOIS, FRANÇOIS, Marquis de. Histoire de la Louisiane et de la cession de cette colonie par la France aux États-Unis de l'Amérique Septentrionale, Paris: Firmin Didot 1829, foxing, 1-inch tear and a few short fold breaks to map, short marginal tears to 2 leaves, FIRST EDITION, half-title, hand-colored folding engraved map showing the dramatic increase in United States territory brought by the Louisiana Territory. Howes B-115; Sabin 3306; Streeter sale III:159 ("... one of the main sources on [the Louisiana purchase]. It shows that...the claim by the United States in the negotiations with Great Britain, that the northern boundary of Louisiana included the area now comprised in Oregon, Washington and Idaho was without foundation. The important map...indicated the 110th meridian as the western extent of Louisiana." -- DARBY, WILLIAM. A Geographical Description of the State of Louisiana, Philadelphia 1816, lacking map, some foxing and browning, red ink check-mark on title, library deaccession stamp on B1, FIRST EDITION, 13-page subscribers list at end. Howes D-62; Sabin 18528 (not calling for 3-pp. "Attestations" and subscribers list); together 2 vols., 8vo, modern half calf. (2)