Letter (Astounding Stories of Super-Science, October 1930)
| First published | October 1930 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1930 |
|
Astounding Stories of Super-Science, October 1930 | Publishers' Fiscal Corp | MAGAZINE | 133|133.6 |
| September 2009 | Astounding Stories of Super-Science, October 1930 | Project Gutenberg | Anthology | ||
| June 2015 |
|
Astounding Stories of Super-Science, October 1930 | LibriVox | Anthology | |6.1 |