| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1939 |
|
Astounding Science-Fiction, July 1939 | Street & Smith Publications, Inc. | MAGAZINE | 67 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1939 |
|
Astounding Science-Fiction, July 1939 | Street & Smith Publications, Inc. | MAGAZINE | 67 |