According to Contento, originally published in the fanzine "Escape" in August 1939. First professional publication in "Stirring Science Stories" in April 1941 as by "Cecil Corwin".
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1941 |
|
Stirring Science Stories, April 1941 | Albing Publications | MAGAZINE | 53 |
| November 1941 |
|
Uncanny Tales, November 1941 | Adam Publishing Company | MAGAZINE | 94 |