O'Curry: Lectures on the Manuscript Materials of Ancient Irish
History (Dublin, 1861); Brunn: An Enquiry into the Art of the
Illuminated Manuscripts of the Middle Ages, Part I, Celtic
Illuminated Manuscripts (Edinburgh, 1897); Robinson: Celtic
Illuminative Art in the Gospels of Durrow, Lindisfarne, and Kells
(Dublin, 1908); Westwood: The Book of Kells, a lecture given in
Oxford, November, 1886 (Dublin, 1887); Gougaud: Répertoire des
fac-similés des manuscripts irlandais (Paris, 1913).