| Verfasser | Häufigkeit |
| Köppen, Wladimir Peter 1846-1940 |
66 |
| Wegener, Alfred 1880-1930 |
10 |
| Koppen, Wilhelm |
6 |
| Köppen, Wilhelm |
6 |
| Köppen-Weber, Divo |
6 |
| Köppen, W. |
5 |
| Wengert-Köppen, Marie-Luise 1948- |
5 |
| Koppen, Luise 1855-1922 |
4 |
| Meyer-Wegner, Otto |
4 |
| Blom, Frans R. E. 1968- |
3 |
| Koppen, Willem van |
3 |
| Köppen, Werner |
3 |
| Köppen, Wilhelm von |
3 |
| Werkman, Hendrik Nicolaas 1882-1945 |
3 |
| Fortner, Wolfgang 1907-1987 |
2 |
| Fouqué, Friedrich 1874-1945 |
2 |
| Geiger, Rudolf 1894-1981 |
2 |
| Köppen, Ernst |
2 |
| Köppen, Hans-Wilhelm |
2 |
| Köppen, Jana |
2 |