The Nature of Middle-earth (J. R. R. Tolkien)Author: J. R. R. Tolkien Age: Adult English First ever publication of J. R. R. Tolkiens final writings on Middle earth, covering a wide range of subjects and perfect for those who have read and enjoyed The Silmarillion, The Lord of the Rings, Unfinished Tales, and The History of Middle earth, and want to learn more about Tolkiens magnificent world. It is well known that J. R. R. Tolkien published The Hobbit in 1937 and The Lord of the Rings in 19545.