The Complete Guide to Middle-earth is a reference book for the canon of Middle-earth, compiled and written by Robert Foster, and now published by Random House Publishing Group. Originally published soon after the publication of The Silmarillion, this book is generally recognised as an excellent reference book on the subject. However, as it does not include information on post-Silmarillion material (e.g., Unfinished Tales and the The History of Middle-earth series), there are errors in certain places.