| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2015 | 978-0-9870040-2-4 | Jonathan Bloom | The Must Have 2016 Sudoku Puzzle Book: 366 puzzle daily sudoku book for the leap year. A challenge for every day of the year. 366 Sudoku Games - 5 levels of difficulty (easy to hard) |
| 1982 | 978-0-9870040-4-8 | Hannes Hegen | The Digedags in America |