| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1989 | 978-0-9622543-0-7 | Marcia Singer | Crystal Kids P.L.A.Y.Book |
| 1990 | 978-0-9622543-1-4 | Marcia Singer | Eating for a Fresh Start |
| 1991 | 978-0-9622543-2-1 | '' | Love Me, Love My Planet: An Environmental P.L.A.Y.Book for the Whole Family |