| Verfasser | Häufigkeit |
| Oettinger, Eduard Maria 1808-1872 |
351 |
| Mayr-Oehring, Erika |
29 |
| Obrecht, Edmond M. |
29 |
| Orlin, Eric M. |
25 |
| Majcher-Ociesa, Edyta |
14 |
| Manchester, Edward Montagu of 1602-1671 |
13 |
| Öttl, Eva Maria |
13 |
| Meier-Oberist, Edmund |
7 |
| Oehrens, Eva-Maria 1949- |
7 |
| Orosz, Eva-Maria 1969- |
7 |
| Ozenbašly, Ėnver Memet-ogʺlu 1956-2014 |
7 |
| Schreinzer, Friedrich Maria 1810-1853 |
7 |
| Emo, Maria 1936- |
6 |
| Kölbel, Herbert 1908-1995 |
6 |
| Meyer-Olbersleben, Ernst 1898-1991 |
6 |
| Obogeanu-Hempel, Erno Marius |
6 |
| Orosz, Eva-Maria |
6 |
| Emo, E.W |
5 |
| Lingen, Theo |
5 |
| Moser, Hans |
5 |