| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1939 |
|
Astounding Science-Fiction, February 1939 | Street & Smith Publications, Inc. | MAGAZINE | 6 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1939 |
|
Astounding Science-Fiction, February 1939 | Street & Smith Publications, Inc. | MAGAZINE | 6 |