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 1849-1855 /

by Barth, Heinrich, 1821-1865
Published 1857

From the Congo to the Niger and the Nile; an account of the German Central African Expedition of 1910-1911.

by Adolf Friedrich, Duke of Mecklenburg-Schwerin, 1873-1969
Published 1914

Travels in Africa during years ... /

by Junker, Wilhelm, 1840-1892
Published 1971