Maza of the Moon

The Call of the Savage

The Metal Monster

The Call of the Savage (Serapis Classics)

The Outlaws of Mars

The Call of the Savage

The Swordsman of Mars

Maza of the Moon

The Outlaws of Mars

The Swordsman of Mars

The Prince of Peril

The Complete Space Adventure Books of Otis Adelbert Kline – All 8 Novels in One Edition: Science-Fantasy Collection, Including The Complete Venus Trilogy, The Swordsman of Mars, The Outlaws of Mars, Maza of the Moon, The Man from the Moon & A Vision of Venus

SPACE ADVENTURES Boxed Set – 8 Novels in One Volume: Science-Fantasy Collection, Including The Complete Venus Trilogy, The Swordsman of Mars, The Outlaws of Mars, Maza of the Moon, The Man from the Moon & A Vision of Venus

JAN OF THE JUNGLE & Its Sequel, Jan in India: The Complete Call of the Savage Series: Escapades of a Young Man Raised in Lab in Forests and Swamps of Wildlife

THE CALL OF THE SAVAGE – Jan of the Jungle & Jan in India: Escapades of a Young Man Raised in Lab in Forests and Swamps of Wildlife

The Dragoman’s Secret

Maza of the Moon: (Annotated)

The Prince of Peril

The Port of Peril