Letter (Astounding Stories, December 1936): Here's a Brain-Twister.
| First published | December 1936 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| December 1936 |
|
Astounding Stories, December 1936 | Street & Smith Publications, Inc. | MAGAZINE | 159|159.1 |