DENHAM, Dixon (1786-1828) and Hugh CLAPPERTON (1788-1827). Narrative of Travels and Discoveries in Northern and Central Africa, in the years 1822, 1823, and 1824, by Major Denham, Captain Clapperton, and the late Doctor Oudney, London: Thomas Davison for John Murray, 1826. 2 parts in one volume, 4to (282 x 222mm). Folding engraved general map, 37 engraved and etched plates, charts and maps, 35 on india paper mounted, 28 present in two states including a proof state before letters and also on india paper mounted, wood-engraved illustrations. (Lacking signature c in the second part [pp.9-16 of Clapperton's Journal of an Excursion], signature c [pp.xvii-xxiv of the introduction] bound in error in its place, small repair to inner blank margin of plate list at rear.) Contemporary red paper-covered boards, leather title-label on backstrip, lettered in gilt (rebacked, old spine laid down, inner hinges repaired). Provenance: John Major (presentation inscription 'John Major Esqr From the Publisher.'). Quentin Keynes Collection (his sale, Christie's, 7 April 2004, lot 313. PUBLISHER'S PRESENTATION COPY OF THE FIRST EDITION of 'the most interesting and important work yet published on the subject of African reseaches' (Lowndes), this probably 'one of very few copies printed upon thick paper for presents only' (op.cit.). According to Lowndes there were three issues: the regular issue, a special issue with the plates on india paper, and then a third issue 'for presents only'. - Unfortunately, the present example must be considered imperfect because of a mistake by the publishers or original binders. Lowndes I, p.629.