For some of his engraved illustrations (such as in Finden's Landscape Illustrations of the Bible and in Byron's Life and Works) Turner based his compositions on sketches made by other artists because he had never visited the sites himself. It might be expected that this would diminish the value of such compositions for Ruskin, but this is not the case, because 'Turner never drew anything that could be seen, without having seen it. That is to say, though he would draw Jerusalem from someone else's sketch, it would be, nevertheless, entirely from his own experience of ruined walls' ( Works, 13.42).