| Verfasser | Häufigkeit |
| Crock, Mary 1959- |
2 |
| McCallum, Mary Jane Logan |
2 |
| McCallum, Ronald Clive 1948- |
2 |
| Saul, Ben 1976- |
2 |
| Smith-Khan, Laura |
2 |
| McCallum, Mary |
1 |
| McCallum, Mary Jane |
1 |
| McCallum, Mary Jane 1974- |
1 |
| Milloy, John S. |
1 |
| Shelemay, Kay Kaufman 1948- |
1 |