List of Harry Potter unofficial guidebooks

There have been many unofficial guidebooks written about the world of Harry Potter, its characters, and the series in general.

English language

 * The Hidden Myths in Harry Potter: Spellbinding Map and Book of Secrets by David Colbert
 * The Magical Worlds of Harry Potter by David Colbert

Foreign language

 * La Guia Secreta de Harry Potter
 * Los mundos magicos de Harry Potter by David Colbert