GRAY, WILLIAM. Voyage dans l'Afrique Occidentale, pendant les Années 1818, 1819, 1820 et 1821, depuis la Rivière Gambie jusqu'au Niger. Half-title. With atlas volume containing 14 lithographed plates and folding engraved map. Together, 2 volumes. 8vo, contemporary paper-backed wrappers, worn and stained, atlas spine chipped at top; dampstains in outer margin of text volume preliminaries, upper outer corner of atlas contents dog-eared, light foxing on some plates; uncut. first edition in french. Paris, 1826