- The one and only Bob, Katherine Applegate ; illustrations by Patricia Castelao
- The last, Katherine Applegate ; illustrated by Max Kostenko
- Willodeen, Katherine Applegate ; illustrations by Charles Santoso
- Endling, the first, Katherine Applegate ; illustrated by Max Kostenko
- Doggo and Pupper save the world, Katherine Applegate ; illustrated by Charlie Alder
- The last, Katherine Applegate
- Odder, Katherine Applegate ; with illustrations by Charles Santoso
- The one and only Ivan, Katherine Applegate ; illustrations by Patricia Castelao
- The one and only Ivan, by Katherine Applegate ; illustrations by Patricia Castelao
- Wishtree, Katherine Applegate
- Doggo and Pupper, Katherine Applegate ; illustrated by Charlie Alder
- Ivan, the remarkable true story of the shopping mall gorilla, Katherine Applegate ; illustrated by G. Brian Karas
- Odder, Katherine Applegate ; with illustrations by Charles Santoso
- The first, Katherine Applegate
- Crenshaw, Katherine Applegate
- The one and only Bob, Katherine Applegate ; illustrations by Patricia Castelao
- Willodeen, Katherine Applegate ; illustrations by Charles Santoso
- The one and only Ivan, Katherine Applegate ; illustrations by Patricia Castelao
- The one and only Bob, Katherine Applegate
- Wishtree, Katherine Applegate ; illustrated by Charles Santoso