Körner, Friedrich
Clapperton, Hugh
Haak, Werner
Bull, Henry Graves / Hogg, Robert
Bateman, James
Clark, Robert Sterling and Sowerby, Arthur
Leake, William Martin
Burckhardt, Johann Ludwig
Kiepert, H.
Lumholtz, Carl Sophus
Mansfeld, Alfred
Blumentritt, Ferdinand
Dochnahl, Friedrich Jakob
Wolff, Willy
Spillmann, Joseph
Michaelis, Hermann
