| Verfasser | Häufigkeit |
| Bockheim, James G. |
2 |
| Campbell, Steven |
2 |
| Fillmore, Matthew |
2 |
| Lammers, Duane |
2 |
| McGrath, Chad |
2 |
| Moberg, Dean |
2 |
| Thorson, Thor |
2 |
| Biederman-Thorson, Marguerite A. |
1 |
| Schmidt, Robert F. 1932-2017 |
1 |
| Sheble, Laura |
1 |
| Southwell, Brian G. 1974- |
1 |
| Thews, Gerhard 1926-2003 |
1 |
| Thorson, Emily A. |
1 |