Blickling Psalter (Morgan Library &amp; Museum, MS M.776) - folio 51v
Unknown author<span style="display: none;">Unknown author</span>
Richard Gameson, ed. (2012) <i><a rel="nofollow" class="external text" href="http://universitypublishingonline.org/cambridge/histories/ebook.jsf?bid=CBO9780511978029">The Cambridge History of the Book in Britain, Volume 1: c.400–1100</a></i>, plate 21.1