Mars (The Grand Tour Series)
2008
Orion: Orion Series, Book 1 (Unabridged)
2010
Gateways: Original New Stories Inspired by Frederik Pohl (Unabridged)
2025
Orion and King Arthur (Unabridged)
2011
Vengeance of Orion: Orion Series, Book 2 (Unabridged)
2010
Orion in the Dying Time: Orion Series, Book 3 (Unabridged)
2010