40004722, Marlborough, 483, Head of Ariadne or a maenad wearing an ivy wreath., Walters Art Museum, Baltimore, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), 42.1224, Cameo, Sardonyx, 1st/2nd cent. AD.