| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1941 |
|
3rd World Science-Fiction Convention | Denvention Committee | Nonfiction | [8] |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1941 |
|
3rd World Science-Fiction Convention | Denvention Committee | Nonfiction | [8] |