8vo. Half-title, frontispiece, 2 maps, one folding, one double-page, publisher's catalogue at end; some foxing, primarily to maps and catalogue. Original red-brown cloth by Edmonds & Remnants with their ticket, stamped in blind, spine lettered in gilt, green endpapers; some staining to boards, particularly upper rear joint.

[with]: JOURNAL OF THE DISCOVERY OF THE SOURCE OF THE NILE. Edinburgh: William Blackwood and Sons, 1863. 8vo. Frontispiece, 2 lithographed maps, one folding in the rear cover pocket, 26 plates, in-text illustrations, publisher's catalogue at end; some splitting between frontispiece and title, plate facing p.86 detached. Original pictorial brown cloth stamped in gilt, green endpapers; spine rebacked preserving original. Bookplate of A.J.M. Perkins to front pastedown.

Czech Africa, p.151; Hilmy II, p.255

FIRST EDITIONS. What Led to the Discovery of the Source of the Nile is the rarer of Speke's two books on his exploration of the African lake regions, in which he records his momentous discovery of Lakes Victoria and Tanganyika. Although published a year after his Journal of the Discovery of the Source of the Nile, this work documents his first expedition arranged by the Royal Geographical Society, during which his rift with Burton developed.