| Verfasser | Häufigkeit |
| Hartshorn, Jack Ernest |
9 |
| Hartshorn, J. E. |
4 |
| Alexander, John W. 1918- |
1 |
| Daniels, Harry 1951- |
1 |
| Eiseman, John Hartshorn |
1 |
| Hartshorn, Jack |
1 |
| Hartshorn, Jack E. |
1 |
| Hartshorn, Sarah |
1 |
| Hartshorn, Truman A. |
1 |
| Lauder, Hugh 1948- |
1 |
| Porter, Jill |
1 |
| Sittner Hartshorn, Kelley J. |
1 |
| Walls, Melissa L. |
1 |
| Whitbeck, Les B. |
1 |