Unfinished Tales of Numenor and Middle-earth Book by John Ronald Reuel Tolkien

Unfinished Tales of Númenor and Middle-earth is a posthumous collection of narratives and essays by J.R.R. Tolkien, edited and with commentary by his son, Christopher Tolkien. The book serves as a vital companion to The Lord of the Rings and The Silmarillion, filling in historical gaps and providing backstories for key characters and events.