The cover of a book titled 'Postscript on Beowulf' with a blue background featuring a wave-like pattern. The title is in a modern font with the words 'Postscript' and 'Beowulf' in a larger size, and 'on' in a smaller size. The author's name, 'S. O. Andrew', is in a smaller font at the bottom. The cover has a yellow border around the edges.