Travels and Discoveries in North and Central Africa: being a journal of an expedition undertaken under the auspices of H.B.M.'s Government, in the years 1849-55
1857|BARTH, Heinrich Traveller
West Africa II.
1839|Society for the Diffusion of Useful Knowledge (Great Britain)1:5 600 000
Neueste Karte von Sudan und Guinea
1860|Meyer, J.
Sudan, Guinea.
1860|Radefeld, Carl Christian Franz, 1788-18741:7 250 000
Carte des découvertis faites dans le centre de l'Afrique