| Verfasser | Häufigkeit |
| Parker, William |
25 |
| Parker, William 1714-1802 |
23 |
| Parker, William 1952- |
14 |
| Parker, William R. |
13 |
| Bowe, William J. |
12 |
| Douglas, H. Parker |
12 |
| Parker, William H. |
12 |
| Parker, William N. |
11 |
| Belmont Parker, William |
10 |
| Campbell, Gordon 1944- |
9 |
| Parker, William 1943- |
9 |
| Parker, William B. |
8 |
| Foulke, William Parker |
6 |
| Shakespeare, William 1564-1616 |
6 |
| Parker, Dorothy 1893-1967 |
5 |
| Parker, T. Jeffery 1850-1897 |
5 |
| Baldwin, Dalton 1931-2019 |
4 |
| Bartlett, William Henry 1809-1854 |
4 |
| Cutler, William Parker |
4 |
| Drake, Hamid 1955- |
4 |