Stephens, John Lloyd
Möllhausen, Balduin
Gerstäcker, Friedrich
Baedeker, Karl
Finsch, Otto
Hesse-Wartegg, Ernst von
Vambery, Hermann
Carter, Howard / Mace, A. C.
Carter, Howard
Ruhl, Moritz
Powell, Wilfred Mansell
Müller, Ferdinand
Andree, Richard
Schulz, Philipp Walter