| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1960 |
|
The Grey Ones | Hodder & Stoughton | Novel | |
| 1962 |
|
The Grey Ones | Corgi | Novel | 9 |
| 1970 |
|
The Grey Ones | Macfadden Books | Novel | |
| 1975 |
|
Skriket | B. Wahlström | Novel | |
| May 1978 |
|
The Grey Ones / A Sword Above the Night | Manor Books | Omnibus | 7 |
| July 2023 |
|
The Grey Ones | Piccadilly Publishing | Novel |