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- A Brief History of The Hobbit
- A Campaign and Adventure Guidebook for Middle-earth
- A Casual Stroll to Mordor
- A Closed Letter to Andrea Charicoryides
- A Closed Letter to Andrea Charicoryides Surnamed Polygrapheus, Logothete of the Theme of Geodesia in the Empire, Bard of the Court of Camelot, Malleus Malitiarium, Inclinga Sum Sometimes Known as Charles Williams
- A Companion to J.R.R. Tolkien
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- A Conspiracy Unmasked
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- A Critical Companion to J.R.R. Tolkien
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