Valérie Didier is a graduate of the University of Cambridge and the Courtauld Institute of Art in London. She has contributed to numerous projects with major institutions, including the Louvre in Paris, the Centre de recherche et de restauration des musées de France, and the Princely Collections of the Liechtenstein Museum in Vienna, Austria. She joined Christie's Impressionist and Modern Art department in 2006, became Head of Business Development for the Middle East, and has been a specialist in Impressionist and Modern Art in Paris since 2017.Hussam Rashwan is an academic and a leading figure in the Egyptian art scholarly community. To preserve the history of modern Egyptian art, he maintains an exceptional collection of art and literary references and has developed renowned expertise on the subject. He supports numerous research projects and collaborates with art collectors, prominent academics, major institutions and curators.Valérie Didier and Hussam Rashwan have previously co-published Mahmoud Saïd, the catalogue raisonné (2017, Skira) and El-Gazzar, the catalogue raisonné (2023, Norma Editions).