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 | The Nature of Middle-earth J. R. R. Tolkien, Carl F. Hostetter September 2, 2021 non-fiction |
 | The Worlds of J.R.R. Tolkien: The Places that Inspired Middle-earth John Garth May 2020 non-fiction |
 | An Encyclopedia of Tolkien: The History and Mythology That Inspired Tolkien's World David Day October 8, 2019 non-fiction |
 | The Hobbits of Tolkien David Day October 2019 non-fiction |
 | A Dictionary of Sources of Tolkien David Day October 2019 non-fiction |
 | A Middle-earth Traveller John Howe October 2, 2018 non-fiction |
 | The Dark Powers of Tolkien David Day October 2018 non-fiction |
 | The Fall of Gondolin J. R. R. Tolkien, Christopher Tolkien August 28, 2018 fantasy > high fantasy |
 | The Heroes of Tolkien David Day October 16, 2017 non-fiction |
 | Beren and Lúthien J. R. R. Tolkien, Christopher Tolkien June 1, 2017 fantasy > high fantasy |
 | The Battles of Tolkien David Day October 2016 non-fiction |
 | Tolkien: An Illustrated Atlas David Day October 2015 non-fiction |
 | A Brief History of The Hobbit J. R. R. Tolkien, John D. Rateliff January 2015 fantasy, non-fiction |
 | The Children of Húrin J. R. R. Tolkien, Christopher Tolkien April 2007 fantasy > high fantasy |
 | The World of Tolkien David Day 2002 non-fiction |
 | The Peoples of Middle-earth (The History of Middle-earth #12) J. R. R. Tolkien, Christopher Tolkien 1996 fantasy, non-fiction |
 | The War of the Jewels (The History of Middle-earth #11) J. R. R. Tolkien, Christopher Tolkien 1994 fantasy, non-fiction |
 | Tolkien's Ring David Day 1994 non-fiction |
 | Morgoth's Ring (The History of Middle-earth #10) J. R. R. Tolkien, Christopher Tolkien 1993 fantasy, non-fiction |
 | A-Z of Tolkien David Day 1993 non-fiction |
 | Sauron Defeated (The History of Middle-earth #9) J. R. R. Tolkien, Christopher Tolkien 1992 fantasy, non-fiction |
 | Tolkien: The Illustrated Encyclopedia David Day 1992 non-fiction |
 | The War of the Ring (The History of Middle-earth #8) J. R. R. Tolkien, Christopher Tolkien 1990 fantasy, non-fiction |
 | The Treason of Isengard (The History of Middle-earth #7) J. R. R. Tolkien, Christopher Tolkien 1989 fantasy, non-fiction |
 | The Return of the Shadow (The History of Middle-earth #6) J. R. R. Tolkien, Christopher Tolkien 1988 fantasy, non-fiction |
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