The  complete guide to Middle-earth
Subtitle: from The hobbit to The Silmarillion
By: Robert Foster.
Edition: Rev. & enl. ed.
Publisher: Ballantine Books
Published: 1978
Place of publication: New York
Language: eng
Number of pages: 575
Subjects: Tolkien, John Ronald Reuel -- Dictionaries, indexes, etc
Notes: "A Del Rey book."

Published in 1971 under title, A guide to Middle-earth.