Those who have a scholarly interest in the Divine Office (a.k.a. "The Liturgy of the Hours" and "Breviary") will want to visit kellerbook.com. There you will find a treasury of information about the Breviary: its background and history (the Timeline provides a fine overview); its various compilers, translators and publishers; a comparison of pre- and post-Vatican II texts; and lots of interesting ancillary material. The website design leaves something to be desired; but the content makes the visit worthwhile.