The Disappearance
Philip Wylie
Triumph
Pirates of Venus
Edgar Rice Burroughs
Carson Napier Venus (1)
Lost on Venus
Carson Napier Venus (2)
Pellucidar
Pellucidar (2)
Tanar of Pellucidar
Pellucidar (3)
Tarzan at the Earth's Core
Pellucidar (4)
Back to the Stone Age
Pellucidar (5)
An Ambush of Shadows
Paul O. Williams
The Pelbar Cycle (5)
The Song of the Axe
The Pelbar Cycle (6)
The Breaking of Northwall
The Pelbar Cycle (1)
The Dome in the Forest
The Pelbar Cycle (3)
When Worlds Collide
Philip Wylie & Edwin Balmer
When Worlds Collide (1)