Sir William Dugdale's three great works, 'The Antiquities of Warwickshire'(1656), the 'Monasticum Anglicanum'(1655-73), and 'The History of St. Paul's in London'(1658), were lavishly illustrated. This inguiry, which contains sixty-five black-and-white reproductions, focusses on the illustrations. It discusses the high value Dugdale came to place on them, thier sources and production, and particularly their meaning in relation to the text.