First published in Blue Book.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1948 |
|
The Blue Book Magazine, October 1948 | McCall Corporation | MAGAZINE | 114 |
| 1954 |
|
No Time Like the Future | Avon | Collection | 107 |
| 1959 | Ningún tiempo como el futuro | E.D.H.A.S.A. | Collection | 131 | |
| November 1964 |
|
Insel der Eroberer | Heyne | Collection | 69 |
| October 2017 |
|
The Space Opera Novella Megapack | Wildside Press | Anthology | |3 |