The Science of Middle-earth

J.R.R. Tolkien's Sanctifying Myth: Understanding Middle Earth by Birzer New.+

Middle-earth seen by the barbarians: Full-colour collective edition (Middle-earth Science Collection)

Why We Love Middle-earth : An Enthusiast's Book about Tolkien, Middle-earth, and the LotR Fandom (A Middle-earth Treasury)

The Little Book of J.R.R. Tolkien: Wit and Wisdom from the creator of Middle Earth: 11