| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1965 |
|
Our Man in Space / Ultimatum in 2050 A.D. | Ace Books | Omnibus |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1965 |
|
Our Man in Space / Ultimatum in 2050 A.D. | Ace Books | Omnibus |