| Verfasser | Häufigkeit |
| Clark, John |
152 |
| Terry, Clark 1920-2015 |
58 |
| Clark, Timothy J. 1943- |
56 |
| Clark, John Maurice 1884-1963 |
54 |
| Clark, John Desmond 1916-2002 |
52 |
| Clark, John R. |
46 |
| Clark, Brian 1961- |
45 |
| Clark, Graham 1941-2023 |
42 |
| Clark, John Willis 1833-1910 |
39 |
| Clark, James |
37 |
| Clark, John Bates 1847-1938 |
36 |
| Clark, John P. 1935-2020 |
34 |
| Gable, Clark 1901-1960 |
31 |
| Clark, J. C. D. 1951- |
28 |
| Clark, Raymond J. ca. 20./21. Jh |
27 |
| Clark, James H. |
26 |
| Johnson, Clark 1954- |
25 |
| Simon, David 1960- |
25 |
| Clark, James 1660-1723 |
22 |
| Clark, Jessica Homan 1980- |
22 |