The Incredible Planet
John W. Campbell, Jr. & Christopher Stasheff
Mightiest Machine (2)
Astounding Tales of Space and Time
The Castle of Iron
L. Sprague de Camp & Fletcher Pratt
Incomplete Enchanter (2)
None But Lucifer
H. L. Gold & L. Sprague de Camp
The Undesired Princess
L. Sprague de Camp
Lest Darkness Fall
Lest Darkness Fall (1)
Figures of Earth
James Branch Cabell
Biography of the Life of Manuel (2)
Solander's Radio Tomb
Ellis Parker Butler
Tarzan and the Golden Lion
Edgar Rice Burroughs
Tarzan (9)
Tarzan's Quest
Tarzan (19)
Tarzan at the Earth's Core
Tarzan (13)
Tarzan and the Ant Men
Tarzan (10)
Tarzan Triumphant
Tarzan (15)
Back to the Stone Age
Pellucidar (5)
Tanar of Pellucidar
Pellucidar (3)
Pirates of Venus
Venus (Edgar Rice Burroughs) (1)
Land of Terror
Pellucidar (6)
Pellucidar
Pellucidar (2)
The Red Hawk
The Moon Sequence (3)
Tarzan and the City of Gold
Tarzan (16)