| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1955 |
|
The Space Frontiers | Signet / New American Library | Collection | 86 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1955 |
|
The Space Frontiers | Signet / New American Library | Collection | 86 |