William Callahan
Pseudonym of Raymond Z. Gallun
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| March 1939 | 63 | Short Fiction | The Machine That Thought | Science Fiction, March 1939 |
1 English-language book
| Year | Type | Title | Author(s) |
|---|---|---|---|
| 1942 | Chapbook | The Machine That Thought | William Callahan |