Two explorers burrow deep into the planet’s crust and emerge in a savage land inside a hollow Earth, where they have many adventures.

An old enemy kidnaps Tarzan’s family, and Tarzan must rescue them with the help of his panther and ape friends.

A young naval officer finds himself in a forbidden part of the world after storms waylay his ship.

Tara, Princess of Helium and daughter of John Carter, finds life-threatening adventure in thrilling far-off regions of Barsoom.

John Carter returns to Mars to try and determine the fate of his lost love Dejah Thoris.

A collection of short stories about Tarzan growing up in the jungle.

Stranded U-boat survivors and their rescuers contend with dangerous beasts and prehistoric people in a strange lost world.

A young man travels to the moon with a group of companions and discovers that it’s inhabited; in subsequent centuries, reincarnations of the same man deal with an invasion of the Earth by the malevolent inhabitants of the Moon.

A street tough undergoes a transformation as he navigates the dangerous worlds of Chicago’s slums, a South Pacific island, and the wilds of Mexico.

An adventurer returns to the hollow interior of the Earth in search of his lost love.

An adventurer finds himself battling alien civilizations on the strange surface of Mars.

Tarzan attempts to leave behind life in the jungle but rapidly discovers that life among humans contains just as many dangers.

Upon discovering his father’s past life in the jungles of Africa, Tarzan’s son sets out to follow in his footsteps.

The legendary lord of the jungle Tarzan finds himself trapped in an unfamiliar land inhabited by a tiny people.

Tarzan adopts a lion cub while he battles a team of thieves seeking the treasures of the lost city of Opar.

After seeking the riches of Opar, Tarzan must save his wife from captivity.

An orphan is raised by apes in Africa and goes on various adventures.

Tarzan seeks to rescue his kidnapped wife from a lost city hidden in a prehistoric jungle.

Tarzan embarks on a perilous journey through war-torn Africa to exact revenge against those who wronged him.

Journeys, times, and cultures collide as two expeditions seek the riches of known and fabeled lands.

When the beautiful Princess Thuvia of Ptarth is kidnapped, suspicion falls on John Carter’s son Carthoris, who sets out to rescue the woman he loves.

John Carter, an Earth-man transported to Mars, must rescue his beloved princess from imprisonment in the Martian Temple of the Sun.