Oz, the Complete Collection, Volume 1: The Wonderful Wizard of Oz; The Marvelous Land of Oz; Ozma of Oz

Percy Jackson and the Sea of Monsters (Book 2)

Oz, the Complete Collection, Volume 2: Dorothy and the Wizard in Oz; The Road to Oz; The Emerald City of Oz

Percy Jackson and the Lightning Thief (Book 1)

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

Dorothy and the Wizard in Oz: American Literature

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

The Mark of Athena (Heroes of Olympus Book 3)

Oz, the Complete Collection, Volume 3: The Patchwork Girl of Oz; Tik-Tok of Oz; The Scarecrow of Oz

The Burning Bridge (Ranger's Apprentice Book 2)

Rinkitink in Oz: American Literature

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

Oz, the Complete Collection, Volume 4: Rinkitink in Oz; The Lost Princess of Oz; The Tin Woodman of Oz

The Blood of Olympus (Heroes of Olympus Book 5)

The Lost Princess of Oz: American Literature