| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Graph Paper Notebook: A Blank Grid Ruled Composition Book with Quad Ruled 1/4 Inch Squares or 4 Squares per Inch | 978-1-6973-7431-5 (1-6973-7431-X) | 2019 |
| I Like Hippos And Maybe 3 People: Hippos Journal Notebook to Write Down Things, Take Notes, Record Plans or Keep Track of Habits | 978-1-6754-7000-8 (1-6754-7000-6) | 2019 |