| Verfasser | Häufigkeit |
| Hutton, Richard Holt 1826-1897 |
42 |
| Holt, Richard C. |
33 |
| Holt, Richard |
29 |
| Hume, J. N. P. |
16 |
| Ashley, Holt |
13 |
| Holt, Robert T. |
11 |
| Holt, Hans 1909-2001 |
10 |
| Holt, Rackham 1899-1963 |
9 |
| Holt, Robert R. |
9 |
| Holt, Robin |
9 |
| Holt, Robin 1966- |
9 |
| Bisplinghoff, Raymond Lewis |
8 |
| Holt, Robert R. 1917- |
8 |
| Hume, James N. |
8 |
| Holt, Anne 1958- |
7 |
| Holt, Richard I. G. |
7 |
| Reiss-Andersen, Berit |
7 |
| Bagehot, Walter 1826-1877 |
6 |
| Halfman, Robert L. |
6 |
| Bisplinghoff, Raymond L. |
5 |