5 books in series

The Hobbit Chronicles

The Hobbit Chronicles is a 5-book series with 5 primary works first released in 2012 with contributions by Weta and Daniel Falconer.

The Hobbit
The Hobbit: An Unexpected Journey - Chronicles II: Creatures & Characters
The Hobbit: The Desolation of Smaug - Chronicles III: Art & Design
Smaug: Unleashing the Dragon
The Hobbit: The Battle of the Five Armies - Chronicles V: Art & Design