See Burne-Jones's copies: Sketchbook Wightwick 3 NT 1288046. Burne-Jones frequently visited Oxford after his sojourn there as a student. As members of Exeter College, Oxford, he and Morris had access to the Bodleian library. During the 1850s the Bodleian put on display in glass cases selections of their illuminated manuscripts and it is probable that Burne-Jones's first encounter with the Douce Apocalypse was at that time.