Further expand The Silmarillion and The Lord of the Rings
This collection ranges from the time of The Silmarillion to the end of the War of the Ring in The Lord of the Rings. Its many treasures include Gandalf's lively account of how he came to send the Dwarves to the celebrated party at Bag-End, the emergence of the sea-god Ulmo before Tuor, the only story of Númenor before its fall, and all that is known of the Five Wizards.
The collection has been edited by Christopher Tolkien, who provides a commentary placing each of the Tales in the context of his father's work.
Unlike The Silmarillion, for which the narrative fragments were modified to connect into a consistent and coherent work, the Unfinished Tales are presented as Tolkien left them, with little more than names changed (the author having had a confusing habit of trying out different names for a character while writing a draft). Thus some of these are incomplete stories, while others are collections of information about Middle-earth. Each tale is followed by a long series of notes explaining inconsistencies and obscure points.