Victoria Charles received her PhD in art history. She has published extensively on art history and is a regular contributor to journals and magazines. Her most recent publication is a monograph on Rembrandt.Joseph Manca received his PhD from Columbia University. He is a professor and Chairman of the Art History Department at Rice University. A specialized on the Italian Renaissance, Joseph Manca has published numerous works on this period.Megan McShane received her PhD from Emory University and specialises in European avant-garde art during First and Second World Wars.Donald Wigal is a retired art, history and theology professor from the University of Dayton. He specialises in modern and Western art. He was an indexer of the "Academic American Encyclopedia."