Map of western equatorial Africa showing the country explored by P.B. Du Chaillu during the years 1856, 57, 58 & 59 / 
Du Chaillu, Paul B.
West, W.,Lithographer.
London :  J. Murray, 
1861.
In: Explorations & adventures in Equatorial Africa. By P.B. Du Chaillu.
Inset: General sketch of Africa showing discoveries of Barth, Livingstone, Burton. Speke and Du Chaillu.