| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1968 |
|
Into the Niger Bend | Ace Books | Novel | 3 |
| 1968 |
|
The City in the Sahara | Ace Books | Novel | 3 |
| 1968 |
|
The Hunt for the Meteor | Ace Books | Novel | 3 |
| 1968 |
|
The Village in the Treetops | Ace Books | Novel | 3 |
| 1968 |
|
Yesterday and Tomorrow | Ace Books | Collection | 3 |
| 1968 |
|
Carpathian Castle | Ace Books | Novel | 3 |
| 1969 |
|
For the Flag | Ace Books | Novel | 3 |