State Guides to Birds

Who Was Marco Polo?

Mysteries of the Great Wall of China

Amundsen, the polar explorer

Mystery of the Sphinx

The discovery of America

The Young Investigator's Guide to Ancient Aliens

The Genius of Islam: How Muslims Made the Modern World

Timelines of Everything: From woolly mammoths to world wars

The Story of Sacajawea: Guide to Lewis and Clark

What Was the Lewis and Clark Expedition?

Stolen History: The truth about the British Empire and how it shaped us

Who Was Ernest Shackleton?

Who Was Ferdinand Magellan?

Who Was Charles Darwin?

Cher Ami: WWI Homing Pigeon: WWI Homing Pigeon

Saudi Arabia

Who Were Stanley and Livingstone?

John Smith

Where Is Jerusalem?