| Verfasser | Häufigkeit |
| Piepenbrock-Fischer, Mechthild |
26 |
| Fischer, C. P. |
8 |
| Eising, Pete A. ca. 20. Jh |
4 |
| Eising, Susi |
4 |
| Piepenbrock, Hermann-Josef |
4 |
| Müller, Veronika |
3 |
| Müller, Ulf |
2 |
| Müller, Ulf 1970- |
2 |
| Piepenbrock, Hartwig 1937-2013 |
2 |
| Rias-Bucher, Barbara 1948- |
2 |
| Albrecht, Ernst |
1 |
| Bode-Schulze, Ursula |
1 |
| Haenlein, Carl 1933- |
1 |
| Kauffmann, Bernd 1944- |
1 |
| Marquard, Detlef |
1 |
| Nannen, Henri 1913-1996 |
1 |
| Piepenbrock, Maria-Theresia 1943- |
1 |
| Schneider, Eckhard 1943-2022 |
1 |
| Schuchardt, Helga 1939- |
1 |