2 books · Ages 4–11 · Early Readers, Chapter Books
Marvin (Paterson) is a 2-book series for ages 4–11 by Katherine Paterson. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Marvin One Too Many and Marvin's Best Christmas Present Ever are great first picks.
No particular order needed — browse and pick what catches your eye.