"In Volumes Ten and Eleven of The History of Middle-earth, Christopher Tolkien recounts from the original texts the evolution of his father's work on The Silmarillion, the legendary history of the Elder Days or First Age, from the completion of The Lord of the Rings in 1949 until J.R.R. Tolkien's death. In volume ten, Morgoth's Ring, the narrative was taken only as far as the natural dividing point in the work, when Morgoth destroyed the Trees of...