Dr Ketty Gottardo, Martin Halusa Curator of Drawings at the Courtauld Gallery, London

Linda Karshan, artist and collector

Edina Adam, Associate Curator of Drawings at the J. Paul Getty Museum, Los Angeles, and Jamie Gabbarelli, Prince Trust Associate Curator in Prints and Drawings, The Art Institute of Chicago, Chicago

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

Allison Wucher, Simon Levenson and Daniella Berman

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, Windsor

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

Nigel Ip, Print Quarterly

Dr Astrid Reuter, Exhibition curator and Head of Prints and Drawings before 1800 at the Städel Museum, Frankfurt, and Dr Stefania Girometti, catalogue researcher