EDGAR RICE BURROUGHS Ultimate Collection: 30+ Adventure Novels & Science Fiction Classics (Illustrated): The Tarzan Series, The Barsoom Series, The Pelucidar Series, Caspak Trilogy, The Mucker Trilogy, Lost World Novels, Fantastic Stories, Historical Novels and more

Who Was Marco Polo?

Mars Trilogy: A Princess of Mars; The Gods of Mars; The Warlord

The Titanic: Lost and Found

Tarzan and the Ant Men

Amundsen, the polar explorer

Escape on Venus

The discovery of America

Pirates of Venus

The Young Investigator's Guide to Ancient Aliens

Tarzan the Magnificent

Christopher Columbus

The Moon Maid

I am Sacagawea

Savage Pellucidar

Timelines of Everything: From woolly mammoths to world wars

Llana of Gathol

The Red Hawk

What Was the Lewis and Clark Expedition?