Rémi Mathis is an archivist in charge of 17th century collections in the Department of Prints and Photography at the Bibliotheque nationale de France. Valérie Sueur-Hermel is a curator at the Bibliotheque nationale de France. Michel Pastoureau is Chair of History of Western Symbolism (Chaire d'histoire de la symbolique occidentale) and is a director of studies at the Sorbonne's École pratique des hautes études. He is an academician of the Académie internationale d'héraldique (International Academy of Heraldry) and vice-president of the Société française d'héraldique (French Heraldry Society). Michel Pastoureau has published widely, including work on the history of colours, animals, symbols, and the knights of the Round Table.