- A Galaxy Unknown by Thomas DePrima, 2010-08-10
- Valor At Vauzlee (A Galaxy Unknown - Book 2) by Thomas DePrima, 2010-08-05
- Cure Unknown: Inside the Lyme Epidemic by Pamela Weintraub, 2009-10-13
- Paranormal State: My Journey into the Unknown by Ryan Buell, Stefan Petrucha, 2010-10-01
- Identity: Unknown (Tall, Dark & Dangerous, Book 8) by Suzanne Brockmann, 1999-12-01
- Atlas of Unknowns (Vintage Contemporaries) by Tania James, 2010-04-20
- Capitalism: The Unknown Ideal by Ayn Rand, Nathaniel Branden, et all 1986-07-15
- Mao: The Unknown Story by Jung Chang, Jon Halliday, 2006-11-14
- Crossing the Unknown Sea: Work as a Pilgrimage of Identity by David Whyte, 2002-04-02
- Unknown Man #89 by Elmore Leonard, 2002-06-01
- Down the Great Unknown: John Wesley Powell's 1869 Journey of Discovery and Tragedy Through the Grand Canyon by Edward Dolnick, 2002-09-01
- Address Unknown by Kathrine Kressmann Taylor, 2001-04-01
- To a God Unknown (Penguin Classics) by John Steinbeck, 1995-08-01
- Portrait of an Unknown Woman: A Novel by Vanora Bennett, 2008-04-01
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