The History of the Lord of the Rings

From Author Wars - https://authorwars.com/publications/the-history-of-the-lord-of-the-rings-610029.html

Overview:

Title: The History of the Lord of the Rings
Author: J. R. R. Tolkien, Christopher Tolkien
Year: 2000
ISBN-10: 0618083553
Publisher: Mariner Books
Pages: 1680
Binding: Trade Paperback
Type: Omnibus
Title Reference: The Treason of Isengard
Notes: Information from Amazon.com as of 3/20/17.
Box set of 4 books: The Shadow Returns, The Treason of Isengard, The War of the Ring and The End of the Third Age.