| Verfasser | Häufigkeit |
| Nichols, Joseph C. |
25 |
| Nichols, Elizabeth A. |
22 |
| Rony, Peter E. |
13 |
| Rony, Peter R. |
12 |
| Nichols, Mike 1931-2014 |
8 |
| Nichols, Dudley 1895-1960 |
4 |
| Nichols, Jeannette Paddock 1890- |
4 |
| Nichols, Mike |
4 |
| Nichols, Philip John Russell |
4 |
| Nichols, Roy F. 1896-1973 |
4 |
| Roberts, Julia 1967- |
4 |
| Goble, R. E. A. |
3 |
| Goldblatt, Stephen |
3 |
| Mumford, Jeanette A. 1975- |
3 |
| Nichols, Elisabeth A. |
3 |
| Nichols, Thomas E. |
3 |
| Poldrack, Russell A. |
3 |
| Roberts, Julia |
3 |
| Arkin, Alan 1934-2023 |
2 |
| Bailey, Larissa L. |
2 |