| Author | Popularity |
| Kugelmann, Louis, 1828-1902 1828-1902 |
2 |
| Marx, Karl, 1818-1883 05.05.1818-14.03.1883 |
2 |
| Kugelmann, Louis 1828-1902 Adressat |
1 |
| Lenin, Vladimir Ilʹič 1870-1924 |
1 |
| Lenin, Vladimir Ilʹič, 1870-1924 22.04.1870-21.01.1924 |
1 |
| Marx, Karl 1818-1883 |
1 |
