"This is a major contribution to Blake scholarship, the first of its kind in many ways. I suspect that it may also set the standard for other such studies of artists. All the essays are firmly grounded in research: materialist, technical, scientific, historical. The information they provide is truly that--information--with accompanying insights, not the sort of speculative interpretations so frequently encountered in literary and iconographic studies of Blake."--Robert Essick, author of "William Blake, Printmaker" and "William Blake and the Language of Adam"