Black Book of Hours
... that there is an illuminated "Black Book of Hours" known for its mournful tone?
... that there is an illuminated "<b id="mwBDQ"><a class="mw-redirect" href="./Black_Hours_(Morgan_Library)" id="mwBDU" rel="mw:WikiLink" title="Black Hours (Morgan Library)">Black Book of Hours</a></b>" <i id="mwBDY">(pictured)</i> known for its mournful tone?