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
Specialkarte der Länder im süden des Tsad-See's
1872|Petermann, August1:800 000
Lac Tchad. Afrique 22.
1827|Vandermaelen, Philippe, 1795-18691:1 641 836
West Africa II.
1839|Society for the Diffusion of Useful Knowledge (Great Britain)1:5 600 000
Carte des découvertis faites dans le centre de l'Afrique
