Cover variant - caution when merging
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1967 |
|
Dangerous Visions | Doubleday | Anthology | |
| December 1967 |
|
Dangerous Visions | Doubleday / SFBC | Anthology | |
| January 1975 |
|
Dangerous Visions | Signet | Anthology | |
| August 1977 |
|
Dangerous Visions | Signet / New American Library | Anthology |