Kayser, Heinrich (1853-1940)(132)
Darmstaedter, Ludwig (1846-1927)(90)
J.C.B. Mohr (Paul Siebeck) (1899-2005)(35)
Breslauer, B. H. (1918-2004)(25)
Hellmann, Gustav (1854-1939)(24)
Martin Breslauer Inc. (New York, NY) (1977-)(23)
Ravenstein, Ernst Georg (1834-1913)(23)
Gesellschaft für Erdkunde zu Berlin (1828-)(20)
Peters, Christian A. F. (1806-1880)(13)
Carus, Julius Victor (1823-1903)(11)
Faraday, Michael (1791-1867)(11)
Men & Women of the Time (London)(10)