| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1998 | 978-1-873948-03-3 | Michael Harding ยท Charles Harvey | Working with Astrology: The Psychology of Midpoints, Harmonics and Astrocartography |
| 2000 | 978-1-873948-04-0 | Suzi Harvey | Orpheus: Voices in Contemporary Astrology |