Unfinished Tales of Númenor and Middle-earth
The Silmarillion
The Histories of Middle Earth, Volumes 1-5
Tales from the Perilous Realm. by J.R.R. Tolkien
Tales from the Perilous Realm
Beren and Lúthien
The Atlas of Middle-Earth (Revised Edition)
The Book of Lost Tales 1(The History of Middle-Earth, Vol. 1)
Unfinished Tales: The Lost Lore of Middle-earth
The Return of the Shadow: The History of The Lord of the Rings, Part One (The History of Middle-Earth, Vol. 6)