| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Peace at the Edge of Uncertainty: Finding Beauty in Mystery, Reclaiming Truth From the Myth of Certainty | 978-0-9826391-0-8 (0-9826391-0-4) | 2010 |
| Pilgrim Wheels: Reflections of a Cyclist Crossing America | 978-0-9826391-2-2 (0-9826391-2-0) | 2015 |