London: J. Arrowsmith, 10 Soho Square, 17 April 1843. First edition. This was one of 15 supplemental maps added in the 1844 edition of "The London Atlas", and is very uncommon. Inset of lower course of Niger River. H.D. Trotter was the leader of an expedition up the Niger River, as part of a delegation of British Officers, including William Allen (1793–1864), under the auspices of the Society for the Extinction of the Slave Trade and for the Civilization of Africa. Sent to explore the interior and make treaties with local rulers to outlaw the Slave Trade, they were seriously hampered by illness. The expedition was considered a disastrous failure though there were three treaties signed with the most influential potentates.
Inset of lower course of Niger River. Copper engraving, original hand color, 24.8 x 20.25". Central fold, slt. chipped in the area of the atlas tab, which would frame out. A touch dusty but very good overall. Item #10744