Astounding Stories, May 1931, unsigned illustration.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1931 |
|
Astounding Stories, May 1931 | Reader's Guild | MAGAZINE | 198 |
| November 2009 | Astounding Stories, May 1931 | Project Gutenberg | Anthology | 198 | |
| September 2010 |
|
The Astounding Adventures of Dr. Bird | Resurrected Press | Collection | 187 |
| August 2016 |
|
Astounding Stories, May 1931 | LibriVox | Anthology | |2 |