 King Arthur
| 4 |
 The Coming of the King The Coming of the King
| 2.5 |
 Pagan Celtic Britain
| 4 |
 The Ancient Celts
| 4 |
 Merlin Merlin
| 4 |
 The Book of Merlin: Insights from the Merlin Conference
| 3 |
 Camelot and the Vision of Albion
| 3 |
The Celts The Celts
| 5 |
 The Druids
| 3 |
 Timetables of History: The New Third Revised Edition
| 4 |
 In Search of the Trojan War
| 5 |
 The Discoverers
| 3.63 |
 Age of Wonder How the Romantic Generation Discovered the Beauty and Terror of Science
| 3.5 |
 White Bicycles
| 3 |
 The Lunar Men The Lunar Men: Five Friends Whose Curiosity Changed the World
| 5 |
 Women of the Celts
| 2.5 |
 The Druids The Druids
| 3 |
 The Celts The Celts: Search for a Civilization
| 4 |
 Drake: The Life and Legend of an Elizabethan Hero
| 3.5 |
 A Foot in the River A Foot in the River: Why Our Lives Change — and the Limits of Evolution
| 0 |
Big History Big History: Our Incredible Journey, from Big Bang to Now
| 5 |
 Maps of Time
| 0 |
 Big History: From the Big Bang to the Present
| 0 |
Grace O'Malley Grace O'Malley: The Biography of Ireland's Pirate Queen 1530–1603 with a Forward by Mary McAleese
| 0 |
 The Iliad
| 4.19 |
 A Short History of Progress
| 3.17 |
 This Fleeting World
| 4 |
 The Magic of Reality
| 4.32 |
 Galileo's Daughter
| 3.56 |
 Galileo and the Science Deniers
| 4 |
 Leonardo's Notebooks
| 3.67 |
 Leonardo da Vinci
| 4.11 |
 Sapiens: A Brief History of Humankind
| 4.18 |
The Chalice and the Blade The Chalice and the Blade: Our History, Our Future
| 4 |
