| Verfasser | Häufigkeit |
| Schmidt-Burkhardt, Astrit 1959- |
51 |
| Burkhardt, Anke |
42 |
| Burkhardt, Karl August Hugo 1830-1910 |
35 |
| Burkhardt, Albert |
30 |
| Burkhardt, Armin 1952- |
24 |
| Burkhardt, Armin |
23 |
| Burkhardt, Livia |
18 |
| Burkhardt, Björn |
16 |
| Eser, Albin 1935-2023 |
16 |
| Raasch, Albert 1930- |
16 |
| Sick, Christine |
16 |
| Burkhardt, Stefan |
12 |
| Burkhardt, Christiane 1966- |
10 |
| Weingartner, Felix 1863-1942 |
10 |
| Burkhardt, Alex ca. 20./21. Jh |
9 |
| Burkhardt, Frederick 1912-2007 |
9 |
| Darwin, Charles 1809-1882 |
9 |
| Burkhardt, Arthur 1905-1990 |
8 |
| Fischer, Andreas ca. 20. Jh |
8 |
| Scherer, Doris |
8 |