Sir Thursday (The Keys to the Kingdom #4)

Percy Jackson and the Lightning Thief (Book 1)

Drowned Wednesday (The Keys to the Kingdom #3)

The Ruins of Gorlan (Ranger's Apprentice Book 1 )

Grim Tuesday (The Keys to the Kingdom #2)

Percy Jackson and the Sea of Monsters (Book 2)

Lady Friday (The Keys to the Kingdom #5)

Percy Jackson and the Last Olympian (Book 5)

Lord Sunday (The Keys to the Kingdom #7)

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

Superior Saturday (The Keys to the Kingdom #6)

The Blood of Olympus (Heroes of Olympus Book 5)

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

The House of Hades (Heroes of Olympus Book 4)

The Mark of Athena (Heroes of Olympus Book 3)

The Burning Bridge (Ranger's Apprentice Book 2)