Mike Penny
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| November 1954 | 139|139.1 | Essay | Letter (Authentic Science Fiction Monthly, November 15, 1954): Upgrade Still | Authentic Science Fiction Monthly, November 15, 1954 |
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| November 1954 | 139|139.1 | Essay | Letter (Authentic Science Fiction Monthly, November 15, 1954): Upgrade Still | Authentic Science Fiction Monthly, November 15, 1954 |