This book deals with works of art. X-radiography is one of the most marvellous ways of studying them. X-rays can reveal critically important aspects of an objects condition and the materials used to create it, as well as providing information about the artists creative process. With the present advent of a new field of expertise, technical art history, X-radiography is back at the centre of scholars attention. This richly illustrated survey includes over 250 X-rays with notes and commentary, providing scientific information as well as guidance for comparing documents to scholars and collectors.