Humboldt, Alexander von (1769-1859)(2)
Barth, Heinrich (1821-1865)(1)
Baumann, Hermann (1902-1972)(1)
Dettinger, Paul (1881-1949)(1)
Ebrard, Johann Heinrich August (1818-1888)(1)
Emin Paşa, Mehmed (1840-1892)(1)
Herrmann, Ernst (1895-1970)(1)
Lorenz, Johann Wilhelm (1796-1866)(1)
Lorenz, Rudolf August (1831-1900)(1)
Meyer, Herrmann (1871-1932)(1)
Mühlenweg, Fritz (1898-1961)(1)