This selection of articles by Walter Cahn, the Carnegie Professor of the History of Art at Yale University, embraces work by the author that spans a period of some thirty years. Professor Cahn's interests here represented range from the illustration of the lost 10th-century Prayer Book of the late Carolingian Queen Emma to a 15th-century guide to the churches of Rome from the library of Margaret of York, Duchess of Burgundy, though their primary focus...