El libro de los cuentos perdidos
The Book of Lost Tales is a collection of early stories by English writer J. R. R. Tolkien, published as the first two volumes of Christopher Tolkien's 12-volume series "The History of Middle-earth", in which he presents and analyses the manuscripts of those stories, which were the earliest form (begun in 1917) of the complex fictional myths that would eventually comprise "The Silmarillion". Each of the Tales is followed by notes and a detailed commentary by Christopher Tolkien.