Rowan and the Zebak

Percy Jackson and the Lightning Thief (Book 1)

Rowan of the Bukshah

Percy Jackson and the Sea of Monsters (Book 2)

Percy Jackson and the Titan's Curse (Book 3)

The Disappearing TV Star

The Blood of Olympus (Heroes of Olympus Book 5)

Beware the Gingerbread House

His Dark Materials: The Amber Spyglass (Book 3)

The Ghost of Raven Hill

Percy Jackson and the Last Olympian (Book 5)

The Sorcerer's Apprentice

Percy Jackson and the Battle of the Labyrinth (Book 4)

Green for Danger

The House of Hades (Heroes of Olympus Book 4)

Rowan of Rin: Volume 1

The Mark of Athena (Heroes of Olympus Book 3)

The Key to Rondo

The Burning Bridge