| title | ISBN-13 | year of publication |
|---|---|---|
| Bigfoot Backpacking Bonanza | 978-0-316-05949-7 | 2007 |
| Clash of the Class Clowns | 978-0-316-18314-7 | 2012 |
| Dracula vs. Grampa at the Monster Truck Spectacular | 978-0-316-05941-1 | 2006 |
| Grampa's Zombie BBQ | 978-0-316-05942-8 | 2006 |
| Hair Ball from Outer Space | 978-0-316-05951-0 | 2007 |
| Monster Fish Frenzy | 978-0-316-05945-9 | 2006 |
| Super Soccer Freak Show | 978-0-316-05947-3 | 2007 |
| Tales of a Sixth-Grade Muppet | 978-0-316-18302-4 | 2011 |
| Tales of a Sixth-Grade Muppet: When Pigs Fly | 978-0-316-18316-1 | 2013 |
| The Good, the Bad, and the Fuzzy | 978-0-316-18312-3 | 2012 |
| Wiley & Grampa #7: Night of the Living Eggnog | 978-0-316-00685-9 | 2007 |
| Wiley & Grampa #10: Jurassic Grampa | 978-0-316-00692-7 | 2009 |