| Verfasser | Häufigkeit |
| Caldwell, Bruce 1952- |
16 |
| Caldwell, Erskine 1903-1987 |
13 |
| Bergold-Caldwell, Denise 1973- |
12 |
| Caldwell, Brian J. 1941- |
12 |
| Bourke-White, Margaret 1904-1971 |
7 |
| Caldwell, Taylor 1900-1985 |
7 |
| Caldwell, Brian |
6 |
| Spinks, Jim M. |
6 |
| Caldwell, Bruce |
5 |
| Birkenfeld, Günther 1901-1966 |
4 |
| Caldwell, John |
4 |
| Grubner, Barbara |
4 |
| Krüger-Kirn, Helga |
4 |
| Lindau, Martin B. 1817-1890 |
4 |
| Marsh-Caldwell, Anne 1791-1874 |
4 |
| Bergold-Caldwell, Denise |
3 |
| Blaser, Werner 1924-2019 |
3 |
| Burke, Joseph |
3 |
| Caldwell, Ben |
3 |
| Caldwell, Ben 1973- |
3 |