| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1974 | 978-0-904486-00-1 | Frown Strong: a Conversation with Merlin | |
| 1976 | 978-0-904486-01-8 | Leo | Dear Dragon |
| 1977 | 978-0-904486-02-5 | 'Leo' | Frown Strong: A Conversation with Merlin |
| '' | 978-0-904486-03-2 | Leo | Dear Dragon |
| '' | 978-0-904486-04-9 | 'Leo' | Gemrod and the Blue Book Writings |