| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1940 |
|
Astounding Science-Fiction, May 1940 | Street & Smith Publications, Inc. | MAGAZINE | 5 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1940 |
|
Astounding Science-Fiction, May 1940 | Street & Smith Publications, Inc. | MAGAZINE | 5 |