Tolkien and the Great War: The Threshold of Middle-earth - John Garth I finished this Tuesday and since I have to take it back to the library on Friday, I will have a real review by then.

To tide you over till that happy day - This is a well-written, fascinating look at a particular moment in Tolkien's life that deepened my understanding of Tolkien's work and made me appreciate them even more.

Highly recommended.