Boshart, August
Chaillu, Paul Belloni du
Grant, James August
Rein, Georg Kurt
Heichen, Paul Hermann
Rohlfs, Gerhard Friedrich
Buchner, Max Joseph August Heinrich Markus
Beer, Adolf
Galton, Sir Francis
Klunzinger, Carl Benjamin
Obst, Karl August Erich
Herrmann Halleur
Johnston, Harry Hamilton
Stanley, Henry Morton