| Verfasser | Häufigkeit |
| Ingram, Thomas N. |
8 |
| LaForge, Raymond W. |
8 |
| Avila, Ramon A. |
4 |
| Schwepker, Charles H. Jr |
4 |
| Williams, Michael R. |
4 |
| Schwepker, Charles H. |
2 |
| Amundsen, Leiv |
1 |
| Bearden, William O. |
1 |
| Eitrem, Samson 1872-1966 |
1 |
| Winnington-Ingram, Reginald Pepys |
1 |