The Book of Lost Tales 1
Christopher Tolkien & J. R. R. Tolkien
History of Middle-Earth (1)
The Book of Lost Tales 2
History of Middle-Earth (2)
The Lays of Beleriand
J. R. R. Tolkien & Christopher Tolkien
History of Middle-Earth (3)
Morgoth's Ring
History of Middle-Earth (10)
The Silmarillion
J. R. R. Tolkien & Christopher Tolkien & Ted Nasmith