Roger Hall
| Year | Publication | Title | |
|---|---|---|---|
|
1949 | Four-Sided Triangle | Four-Sided Triangle |
| 1956 | Clipper of the Clouds | Clipper of the Clouds | |
|
1962 | The Jewel of the Seven Stars | The Jewel of the Seven Stars |
|
1966 | Drums of the Dark Gods | Drums of the Dark Gods |