The Hidden Oracle
Rick Riordan
The Trials of Apollo (1)
Stellarlune
Shannon Messenger
Keeper of the Lost Cities (9)
The Chalice of the Gods
Percy Jackson and the Olympians (6)
Exile
Keeper of the Lost Cities (2)
The Letters of J. R. R.Tolkien
J. R. R. Tolkien & Christopher Tolkien & Humphrey Carpenter