| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1960 |
|
The Worlds of Clifford Simak | Simon & Schuster | Collection | 272 |
| August 1960 |
|
The Worlds of Clifford Simak | Simon & Schuster / SFBC | Collection | 218 |
| 1962 |
|
Other Worlds of Clifford Simak | Avon | Collection | 114 |