Otis Adelbert Kline

Otis Adelbert Kline Book Series

• Robert Grandon 02 Prince of Peril

• Maza of the Moon (1929)

• Dr. Dorp 01 The Malignant Entity

• Robert Grandon 01 Planet of Peril

• Robert Grandon 03 The Port of Peril aka Buccaneers of Venus

• Bride of Osiris

• SPAWN OF THE COMET

• Maza of the Moon

• The Metal Monster

• Stolen Centuries

• The Swordsman of Mars

• Revenge of the Robot

• The Thing That Walked In The Rain

• Jan of the Jungle