| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1931 |
|
Astounding Stories, May 1931 | Reader's Guild | MAGAZINE | 276|276.1 |
| November 2009 | Astounding Stories, May 1931 | Project Gutenberg | Anthology | 276 | |
| August 2016 |
|
Astounding Stories, May 1931 | LibriVox | Anthology | |7 |