| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1983 |
|
Keepers of the Secrets | Sphere | Novel | |
| 1984 |
|
Keepers of the Secrets | Sphere | Novel | |
| 1985 |
|
Keepers of the Secrets | Severn House | Novel | |
| December 1988 |
|
The Empire of the Nine | Sphere | Omnibus |