sentences:  In 1964, the Morgan Library produced an 83-page catalogue, "The Book of Hours of Catherine of Cleves", for the Cleves Hours exhibit held at the Library.Both the cloth and paperback editions contained 30 black and white plates, plus 2 color plates, accompanied with commentaries by Dr. John Plummer, Curator of Mediaeval Manuscripts at the Pierpont Morgan Library.Frederick B. Adams, Jr, wrote the Foreword, which incorporated comments by Harry Bober, L. M. J. Delaissé, Millard Meiss, and Erwin Panofsky.