| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1999 | 978-0-9666076-0-4 | Greg M. Williamson | What's the Recipe for Friends? |
| 2005 | 978-0-9666076-3-5 | Greg Williamson · Wendy Popko | Why Do I Have To Wear Glasses? |
| '' | 978-0-9666076-7-3 | Greg Williamson | What's The Recipe For Friends? |