name all arda-based tolkien books.
1. The Hobbit
2. The Lord of the Rings trilogy:
- The Fellowship of the Ring
- The Two Towers
- The Return of the King
3. The Silmarillion
4. Unfinished Tales of Númenor and Middle-earth
5. The Children of Húrin
6. Beren and Lúthien
7. The Fall of Gondolin
8. The History of Middle-earth series (12 volumes in total):
- The Book of Lost Tales, Part One
- The Book of Lost Tales, Part Two
- The Lays of Beleriand
- The Shaping of Middle-earth
- The Lost Road and Other Writings
- The Return of the Shadow
- The Treason of Isengard
- The War of the Ring
- Sauron Defeated
- Morgoth's Ring
- The War of the Jewels
- The Peoples of Middle-earth