First appeared under this title as half of an Ace Double April 1960, with Lost in Space by George O. Smith, and then in the omnibus "The Three Eyes of Evil" (1973 UK).
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1960 |
|
Earth's Last Fortress / Lost in Space | Ace Books | Omnibus | 5 |
| June 1973 |
|
The Three Eyes of Evil and Earth's Last Fortress | Sidgwick & Jackson | Collection | 107 |
| March 1976 |
|
Science Fiction Special (16) | Sidgwick & Jackson | Omnibus | |
| November 1977 |
|
Earth's Last Fortress and The Three Eyes of Evil | Sphere Books | Collection | 5 |
| May 1978 |
|
Science Fiction Special (26) | Sidgwick & Jackson | Omnibus | |
| 1979 |
|
Earth's Last Fortress and The Three Eyes of Evil | Sphere | Collection | 7 |