| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1937 |
|
Astounding Stories, February 1937 | Street & Smith Publications, Inc. | MAGAZINE | 41 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1937 |
|
Astounding Stories, February 1937 | Street & Smith Publications, Inc. | MAGAZINE | 41 |