The most recent revised edition was published by Houghton Mifflin Harcourt in August 2002.
This book is the definitive explication of the sources, characters, places, and all things Hobbit. Integrated with Anderson's notes, and placed alongside the fully restored and corrected text of the original story, are more than 150 illustrations showing visual interpretations of The Hobbit specific to many of the cultures that have come to know and love Tolkien's Middle-earth.
Tolkien's original line drawings, maps and color paintings are also included. The Annotated Hobbit shows how Tolkien worked as a writer, what his influences and interests were, and how these relate to the invented world of Middle-earth. It gives a valuable overview of Tolkien's life and the publishing history of The Hobbit, and explains how every feature of The Hobbit fits within the rest of Tolkien's invented world. In this book you can learn how Gollum's character was revised to accommodate the true nature of the One Ring, you can read the full text of The Quest of Erebor, Gandalf's explanation of how he came to send Bilbo Baggins on his journey with the Dwarves.