Robert Katz lives in London and is a graduate of Oriel College, Oxford where he studied Modern Languages. He has contributed to a wide range of books, from nineteenth-century European artists in the Holy Land to contemporary art. He has also translated countless works on music, art, and film from French and German. In addition to his work with books he has also contributed reviews and features to City Limits magazine Celestine Dars was trained in France as an art historian, and specializes in the study of art in its social-historical context. She has worked in publishing and art research most of her professional life, contributing to over 25 volumes.