| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1991 | 978-1-874559-00-9 | Peter John Foss · etc. | The Powys Journal: v. 1 |
| '' | 978-1-874559-01-6 | Alan Howe | John Cowper Powys, Theodore Francis Powys, Llewelyn Powys: A Reader's Guide and Checklist of the Principal Writings of the Powys Family |
| 2006 | 978-1-874559-31-3 | John Cowper Powys · David Goodway | The Art of Forgetting the Unpleasant and Other Essays |