12a-b. (left and center) William Blake, The Book of Los, copy A, title plate. Etching, 13.5 x 9.8 cm., 1795, color printed and finished in watercolors and pen and ink, 1795. British Museum. Details of the right and left sides of the image showing colors spreading beyond the platemark and over the beveled edges.
12c. (right) William Blake, The Book of Job, copperplate for plate 2. Engraving, 21.3 x 16.5 cm., 1826. British Museum. Detail showing bevel at lower right corner.