Letter (Astounding, December 1938): See Heading on Reinsbert Letter. And E. E. Smith's Article "Catatstrophe!" in the May Astounding Answered Your Question.
| First published | December 1938 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| December 1938 |
|
Astounding Science-Fiction, December 1938 | Street & Smith Publications, Inc. | MAGAZINE | 161|161.1 |