In large 8° (300x220 mm); 4 unnumbered pages, 374 with 6 small maps on a separate sheet at the beginning and a large-format lithographic map (820x1340 mm) folded several times at the end entitled Map of the Western (and Eastern) Part of Equatorial Africa and of the Explorations by Land and Water of Henry M. Stanley. An excellent copy with some small foxing of the paper at the beginning. Garnet cloth with titles printed in gold on the spine and front (within a black box). Stanley's (1841–1904) voyage of 1871–1872 in search of David Livingstone, then continuing alongside him along the northern part of Lake Tanganyika, profoundly influenced the journalist, who decided to dedicate the rest of his life to the exploration of Africa. Supported by new funding from the New York Herald, as well as the Daily Telegraph, in 1874 he set out on a three-year journey that saw him cross equatorial Africa from east to west and, the first European to follow the course of the Congo River to its mouth. Stanley recounted his journey in the book Through the Dark Continent (1878), which also included this Map of Western Equatorial Africa, which for the first time shows the course of the Congo River with great precision, especially considering the author's limited cartographic training. Stanley's itineraries are drawn in red, as in Livingstone's map, whose style this map imitates in every way.