| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1973 | 978-0-904030-00-6 | E.Graham Howe | Mind of the Druid |
| 1961 | 978-0-904030-01-3 | Ivan R. Dale ยท P.J. Greenway | Kenya Trees and Shrubs |
| 1990 | 978-0-904030-02-0 | Susan Moody | Hatchards Crime Companion: The top 100 crime novels of all time selected by The Crime Writers Association. |