| Verfasser | Häufigkeit |
| Seager, Chris 1949- |
8 |
| Seager, Allan |
4 |
| Altman, John 1949- |
3 |
| Berry, Glen |
3 |
| Gulick, Charles Adams 1896-1984 |
3 |
| Harvey, Jonathan |
3 |
| Henry, Linda |
3 |
| MacDonald, Hettie |
3 |
| Neal, Scott |
3 |
| Olson, Ann |
3 |
| Seager, Chris |
3 |
| Seager, Henry R. 1870-1930 |
3 |
| Barry, John A. |
2 |
| Daniels, Ben |
2 |
| Downie, James A. 1951- |
2 |
| Empson, Tameka |
2 |
| Fairservice, Don |
2 |
| García Gil, Alejandro |
2 |
| Garrido Schneider, Eduardo Antonio |
2 |
| Gulick, Charles A. |
2 |