Sarah Catala, curator of Hubert Robert & Fragonard. A Feeling for Nature at the Musée de Valence

Rachel Sloan, Associate Curator for Works on Paper, the Courtauld Gallery, London

Furio Rinaldi, Curator in Charge, Achenbach Foundation for Graphic Arts, Fine Arts Museums of San Francisco

Dr Annemarie Stefes, independent art historian

Julian Brooks, Senior Curator of Drawings at the J. Paul Getty Museum, Los Angeles

Dr. Giovanni Sassu, Director of the Civica Pinacoteca "il Guercino", Cento

Gode Krämer, former head of the Graphic Art Collection and the Picture Gallery of the Kunstsammlungen & Museen Augsburg

Sonia del Re, Senior Curator of Prints and Drawings, National Gallery of Canada, Ottawa

William Satloff, former Graduate Curatorial Intern at the Clark Art Institute

Christof Metzger, curator for German and Austrian Art until 1760 at the Albertina, Vienna

Linda Karshan, artist and collector

Dr Axel Moulinier, collaborator on A Watteau Abecedario, catalogue raisonné of the paintings by Antoine Watteau, under the supervision of Pr. Emeritus Martin Eidelberg

Dr Oliver Tostmann, Susan Morse Hilles Curator of European Art at the Wadsworth Atheneum, Hartford

Martin Clayton, Head of Prints and Drawings at the Royal Collection Trust

Dr Rachel Hapoienu, Assistant Curator of Works on Paper at the Courtauld Gallery, London

Juliet Carey, Senior Curator at Senior Curator at Waddesdon Manor (National Trust / Rothschild Foundation)

Elania Pieragostini, Senior Curator of the Devonshire Collection at Chatsworth, Derbyshire

Tom Nevile, Editor

Dr Alexa McCarthy, executive director of the Greater Des Moines Public Art Foundation and specialist in drawings on blue paper

Dominique Radrizzani, former director of the Musée Jenisch Vevey

Grant Lewis, Milein Cosman Curator at the British Museum

Maria Aresin, Curator for prints and drawings until 1800 at the Kunsthalle Bremen

Rosie Razzall, Curator of Drawings at Museum Boijmans Van Beuningen in Rotterdam