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
Pays, sud de Howssa et de Bornou. Afrique 29.
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
1826|Oudeney
Neueste Karte von Sudan und Guinea
1860|Meyer, J.
Sudan, Guinea.
1860|Radefeld, Carl Christian Franz, 1788-18741:7 250 000
Inner-Afrika Blatt 5. (Bagirmi & Wadai)
1863|Petermann, Augustus Herman; Hassenstein, Bruno1:2 000 000