Adventures in the Unknown
Titles (4)
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 1 | The Mystery Men of Mars | Carl H. Claudy | 1931 | |
| 2 | A Thousand Years a Minute | Carl H. Claudy | 1933 | |
| 3 | The Land of No Shadow | Carl H. Claudy | 1933 | |
| 4 | The Blue Grotto Terror | Carl H. Claudy | 1934 |
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 1 | The Mystery Men of Mars | Carl H. Claudy | 1931 | |
| 2 | A Thousand Years a Minute | Carl H. Claudy | 1933 | |
| 3 | The Land of No Shadow | Carl H. Claudy | 1933 | |
| 4 | The Blue Grotto Terror | Carl H. Claudy | 1934 |