| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Keep Calm And Follow Percy Jackson: Percy Jackson Diary Journal Notebook | 978-1-7273-8914-2 (1-7273-8914-X) | 2018 |
| What Would Lucifer Morningstar Do?: Lucifer Morningstar Journal Diary Notebook | 978-1-7275-7074-8 (1-7275-7074-X) | 2018 |