The Company They Keep: C. S. Lewis and J.R R. Tolkien as Writers in Community (Dale Nelson)
Ents, Elves, and Eriador: The Environmental Vision of J.R.R. Tolkien (Patrick Curry)
From Hobbits to Hollywood: Essays on Peter Jackson's “Lord of the Rings”, and: The Lord of the Rings: Popular Culture in Global Context (Kristin Thompson)
The J.R.R. Tolkien Companion and Guide, Volume I:
Chronology, and: Volume II:
Reader's Guide (John Garth)
J.R R. Tolkien Encyclopedia: Scholarship and Critical Assessment (Kelley M. Wickham-Crowley)
The Keys of Middle-earth: Discovering Medieval Literature through the Fiction of J.R.R. Tolkien (John R. Holmes)
Lord of the Rings 1954-2004: Scholarship in Honor of Richard E. Blackwelder (Brian Rosebury)
The Philosophy of Tolkien: The Worldview behind “The Lord of the Rings” (Matthew A. Fisher)
The Plants of Middle-earth: Botany and Sub-creation (Amy Amendt-Raduege)
The Power of the Ring: The Spiritual Vision Behind the Lord of the Rings (Mike Foster)
Reading “The Lord of the Rings”: New Writings on Tolkien's Classic (Patrick Curry)
The Ring of Words: Tolkien and the Oxford English Dictionary (Douglas A. Anderson)
The Rise of Tolkienian Fantasy (Matthew T. Dickerson)
The Roots of Tolkien's Middle Earth (T.A. Shippey)
A Tolkien Mathomium: A Collection of Articles about J.R.R. Tolkien and His Legendarium (Sandra Ballif Straubhaar)
Tolkien's Modern Middle Ages (Robin Anne Reid)