Darmstaedter, Ludwig (1846-1927)(24)
Kayser, Heinrich (1853-1940)(15)
Ravenstein, Ernst Georg (1834-1913)(13)
Hellmann, Gustav (1854-1939)(8)
Gesellschaft für Erdkunde zu Berlin (1828-)(7)
Breslauer, B. H. (1918-2004)(6)
Men & Women of the Time (London)(6)
Geographische Gesellschaft (Berlin)(5)
J.C.B. Mohr (Paul Siebeck) (1899-2005)(5)
Martin Breslauer Inc. (New York, NY) (1977-)(4)
Moigno, François Napoléon Marie(4)
Ørsted, Hans Christian (1777-)(4)
Ascherson, Paul (1834-1913)(3)
Barth, Heinrich (1821-1865)(3)
Carus, Julius Victor (1823-1903)(3)