| Werke |
| 1929 |
[sff]
|
The Alien Intelligence |
| 1930 |
[sff]
|
The Girl From Mars (mit Miles Breuer) |
| 1930 |
[sff]
|
The Green Girl |
| 1949 |
[sff]
|
Geschöpfe der Finsternis [Darker Than You Think] |
|
[sff]
|
Die Dracheninsel [Dragon's Island] |
| 1968 |
[sff]
|
Die Weltraumfalle [Trapped in Space] |
| 1972 |
[sff]
|
Die Mondkinder [The Moonchildren] |
| 1974 |
[sff]
|
Die Macht der Dunkelheit [The Power of Blackness] |
| 1975 |
[sff]
|
Farthest Star - zus. mit Frederik Pohl |
| 1983 |
[sff]
|
Wall Around a Star - zus. mit Frederik Pohl |
| 1984 |
[aut]
|
Wonder's Child. My Life in Science Fiction |
| 1988 |
[sff]
|
Land's End [Land's End] - zus. mit Frederik Pohl |
| 2001 |
[sff]
|
Die Endzeit-Ingenieure [Terraforming Earth] |
