Frances Fowle is Emeritus Professor of Nineteenth-Century Art, University of Edinburgh, UK. For over twenty years she was Senior Curator of French Art, National Galleries of Scotland, UK. She is a co-founder/ex-board member of TIAMSA.Her previous publications include Van Gogh's Twin: The Scottish Art Dealer Alexander Reid (2010) and Globalising Impressionism: Reception, Translation and Transnationalism (2020).

MaryKate Cleary is Curator of Provenance at the Princeton University Art Museum, USA. She specialises in provenance research, the history of the art market, and legal and ethical issues of cultural heritage. She was previously Lecturer at Sotheby's Institute of Art, London; Collections Specialist at The Museum of Modern Art, New York; and Manager of Historic Claims and Provenance Research at the Art Loss Register.