| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1939 |
|
Marvel Science Stories, April-May 1939 | Western Fiction Publishing Co. | MAGAZINE | 6|6.4 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1939 |
|
Marvel Science Stories, April-May 1939 | Western Fiction Publishing Co. | MAGAZINE | 6|6.4 |