| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| 50 Fabulous Places to Retire in America | 978-1-56414-849-0 | 2006 | Arthur Griffith |
| Heart Wide Open: Inspirational Poems for Healing | 978-0-945962-32-8 | 2004 | |
| The Homeschooling Handbook, 2nd Edition | 978-0-7615-1727-6 | 1999 | |
| The Unschooling Handbook: How to Use the Whole World As Your Child's Classroom | 978-0-7615-1276-9 | 1998 | |
| Three hundred years hence | 978-0-8398-2303-2 | 1975 | |
| Viral Learning: Reflections on the Homeschooling Life | 978-1-4303-1217-8 | 2007 | |
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