| Verfasser | Häufigkeit |
| Holt, Frank L. 1954- |
39 |
| Ashley, Holt |
16 |
| Holt, Victoria 1906-1993 |
13 |
| Längsfeld, Margarete 1936-2023 |
13 |
| Holt, Francis Ludlow |
9 |
| Bisplinghoff, Raymond Lewis |
8 |
| Holt, Lee |
8 |
| Halfman, Robert L. |
6 |
| Holt, Hans 1909-2001 |
6 |
| Holt, Leslie Edmonds |
6 |
| Holt, Louise 1975- |
6 |
| Holt, P. M. 1918-2006 |
6 |
| Beaumont, W. I. |
5 |
| Bisplinghoff, Raymond L. |
5 |
| Bull, Alan T. |
5 |
| Calderwood, W. L. |
5 |
| Holt, Ernest W. L. |
5 |
| Holt, Geoffrey |
5 |
| Lilly, Malcolm D. |
5 |
| Holt, A. L. |
4 |