DALTON, O.M. Catalogue of the Ivory Carvings of the Christian Era, London: British Museum, 1909, 4°, plates, original cloth -- KOECHLIN, Raymond. Les Ivoires Gothiques Français, Paris: F. De Nobele, 1968, 3 vols., 4°, reprint edition, plates, original mock-leather; and 2 others on ivory carvings. (6)