| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| The Multiplication Tables Colouring Book: Solve the Puzzle Pictures While Learning Your Tables | 978-0-906212-85-1 (0-906212-85-5) | 1991 |
| The Second Multiplication Tables Colouring Book: Solve the Puzzle Pictures While Learning Your Tables | 978-1-899618-30-9 (1-899618-30-9) | 1999 |