| #2 |  King Arthur
| 4 |
| #3 |  The Coming of the King The Coming of the King
| 2.5 |
| #4 |  Pagan Celtic Britain
| 4 |
| #5 |  The Ancient Celts
| 4 |
| #6 |  Merlin Merlin
| 4 |
| #7 |  The Book of Merlin: Insights from the Merlin Conference
| 3 |
| #8 |  Camelot and the Vision of Albion
| 3 |
| #9 | The Celts The Celts
| 5 |
| #10 |  The Druids
| 3 |
| #11 |  Timetables of History: The New Third Revised Edition
| 4 |
| #12 |  In Search of the Trojan War
| 5 |
| #13 |  The Discoverers
| 3.63 |
| #14 |  Age of Wonder How the Romantic Generation Discovered the Beauty and Terror of Science
| 3.5 |
| #15 |  White Bicycles
| 3 |
| #16 |  The Lunar Men The Lunar Men: Five Friends Whose Curiosity Changed the World
| 5 |
| #17 |  Women of the Celts
| 2.5 |
| #18 |  The Druids The Druids
| 3 |
| #19 |  The Celts The Celts: Search for a Civilization
| 4 |
| #20 |  Drake: The Life and Legend of an Elizabethan Hero
| 3.5 |
| #21 |  A Foot in the River A Foot in the River: Why Our Lives Change — and the Limits of Evolution
| 0 |
| #22 | Big History Big History: Our Incredible Journey, from Big Bang to Now
| 5 |
| #23 |  Maps of Time
| 0 |
| #24 |  Big History: From the Big Bang to the Present
| 0 |
| #25 | Grace O'Malley Grace O'Malley: The Biography of Ireland's Pirate Queen 1530–1603 with a Forward by Mary McAleese
| 0 |
| #26 |  The Iliad
| 4.19 |
| #27 |  A Short History of Progress
| 3.17 |
| #28 |  This Fleeting World
| 4 |
| #29 |  The Magic of Reality
| 4.32 |
| #31 |  Galileo's Daughter
| 3.56 |
| #32 |  Galileo and the Science Deniers
| 4 |
| #33 |  Leonardo's Notebooks
| 3.67 |
| #34 |  Leonardo da Vinci
| 4.11 |
| #35 |  Sapiens: A Brief History of Humankind
| 4.18 |
| #36 | The Chalice and the Blade The Chalice and the Blade: Our History, Our Future
| 4 |
