| Verfasser | Häufigkeit |
| Neff, John Hallmark |
8 |
| Bach, Johann Sebastian 1685-1750 |
3 |
| Hallmark, Rufus E. 1943- |
3 |
| Osthoff, Helmuth 1896-1983 |
3 |
| Bichteler, Julie Hallmark |
2 |
| Baldwin, Virginia A. |
1 |
| Cowart, Jack |
1 |
| Crowley, James C. |
1 |
| Flam, Jack D. 1940- |
1 |
| Fourcade, Dominique 1938- |
1 |
| Hallmark, Bryan W. |
1 |
| Hallmark, Julie |
1 |
| Shanley, Michael G. 1947- |
1 |
| Sollinger, Jerry M. 1941- |
1 |