| Verfasser | Häufigkeit |
| Olson, David R. 1935- |
29 |
| Olson, Christopher J. |
8 |
| Reinhard, CarrieLynn D. 1978- |
7 |
| Olson, David L. 1944- |
4 |
| Olson, S. Douglas 1957- |
4 |
| Doescher, Russell L. |
3 |
| Evans, James R. 1950- |
3 |
| Olson, Donald W. |
3 |
| Olson, Laura R. 1967- |
3 |
| Alexander, Karl L. |
2 |
| Djupe, Paul A. 1971- |
2 |
| Dowell, Austin A. |
2 |
| Entwisle, Doris R. |
2 |
| Fowler, Robert Booth 1940- |
2 |
| Hertzke, Allen D. 1950- |
2 |
| Hobbs, H. H. 1944-2016 |
2 |
| Olson, James |
2 |
| Olson, Joanne K. |
2 |
| Olson, Laura R. |
2 |
| Olson, Linda Steffel |
2 |