| 2006 |
| 2006 |
Captive Queen: A Novel of Eleanor of Aquitaine | 2010 |
| 2010 |
Naming nature : the clash between instinct and science | 2009 |
The Bellini Madonna: A Novel | 2008 |
| 2009 |
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| |
| 2008 |
| |
Millennium Year By Year: A Chronicle of World History from AD 1000 to the Present Day | 1999 |
| 2000 |