Angel of the Revelation (Book of Revelation, chapter 10), ca. 1803?5, Watercolor, pen and black ink, over traces of graphite, Sheet: 15 7/16 ? 10 1/4 in. (39. 2 ? 26 cm), Drawings, William Blake (British, London 1757?1827 London), This work comes from a series of eighty biblical watercolors that Blake made for Thomas Butts, an important patron. He found the subject in chapter 10 of the book of Revelation and describes both the author and his vision