| Autor | Popularidad | 
        
      | Friedrich-Andreas-Perthes-Aktiengesellschaft | 2 | 
        
      | Giesebrecht, Wilhelm von 1814-1889 | 2 | 
        
      | Heeren, Arnold H. L. 1760-1842 | 2 | 
        
      | Iorga, Nicolae 1871-1940 | 2 | 
        
      | Lamprecht, Karl 1856-1915 | 2 | 
        
      | Oncken, Hermann 1869-1945 | 2 | 
        
      | Perthes, Andreas 1813-1890 | 2 | 
        
      | Perthes, Emil 1841-1910 | 2 | 
        
      | Perthes, Friedrich Christoph 1772-1843 | 2 | 
        
      | Ukert, Friedrich August 1780-1851 | 2 |