Cincinnati Children's Hospital · MightyBook Inc.
| title | ISBN-13 | year of publication |
|---|---|---|
| Living Green: A Turtle's Quest for a Cleaner Planet | 978-0-9831355-6-2 | 2011 |
| Stuttering Stan Takes a Stand | 978-0-9831355-4-8 | 2010 |
| Stuttering Stan Takes a Stand | 978-0-9821677-0-0 | 2008 |
| Yak's Corner: Children's Stories by Artie Knapp | 978-0-9831355-2-4 | 2011 |