Acknowledgments
This work was made possible by the generous support of Guy Wildenstein and the Wildenstein Family and the Hasso Plattner Foundation, along with our WPI Board Co-Chairs Vanessa Wildenstein and Stefanie Plattner. The WPI would like to thank the whole team at Navigating.art for their continued hard work on the digital platform, especially Lisa Weiß, Isabel Flores, Katjana Berndt, Hannah Danes, Martin Lorenz, Basan Kuberlinov, and Thomas Uhde. Additional thanks to WPI staff members Pascal Perrin, Jennifer Gimblett, Caitlin Sweeney, Florence Sonier, Sophie Pietri, Françoise Marnoni, Vitoria Hadba, Lily Beeson, and Dana Anderson.
The WPI would also like to thank the many individuals and organizations who contributed to this project:
Wildenstein & Co., Inc., New York (Claudine Godts); Archives Durand-Ruel, Paris (Paul-Louis Durand-Ruel & Flavie Durand-Ruel); Sotheby's (Edith Eustis, Amanda Partridge, Sara Land, & Lucian Simmons); Christie’s (Lynda McLeod & Richard Aronowitz); Megan Noh; Alexandra Keiser; Betsy Stepina Zinn; Paul Cassirer Archiv, Zurich (Walter Feilchenfeldt & Petra Cordioli); Kunstmuseum Bern (Dr. Nina Zimmer); Museum of Fine Arts, Boston (Katie Hanson, Julia Welch & Janet Moore); Museum Boijmans Van Beuningen, Rotterdam (Dr. Albert J. Elen); National Galleries of Scotland (Frances Fowles, Hannah Brocklehurst & Alejandro Basterrechea); Ashmolean Museum, Oxford (Colin Harrison & Catherine Casley); Musée Marmottan Monet, Paris (Marianne Mathieu, Aurélie Gavoille, Veronique Pelloie & Claire Gooden); Musée d’Arts de Nantes (Louise Denis & Marie Chiffoleau); Sterling and Francine Clark Art Institute, Williamstown, Massachusetts (Olivier Meslay & Esther Bell); Galerie de la Béraudière, Brussels (Elena Kempen); Von Der Heydt Museum, Wuppertal (Dr. Roland Mönig, Dr. Antje Birthälmer, Sierra Kaag & Dr. Anna Storm); Kunstmuseum Basel (Dr. Anita Haldemann); Städel Museum, Frankfurt (Dr. Regina Freyberger & Ulrike Fladerer); National Gallery of Art, Washington, D.C. (Mary Morton & Michelle Bird); Matsart Auctioneers & Appraisers (Yehudit Ratzabi); Museo Soumaya, Mexico City (Pablo Berrocal Navarro & Laura González Eguiarte); M. S. Rau Antiques, New Orleans (Ludovic Rousset); Hélène Bailly Gallery, Paris (Hélène Bailly & Samantha Demay); Tate Britain, London (Darragh O'Donoghue); Lefevre Fine Art Ltd., London (Alex Corcoran); Kunsthalle Basel (Giulia Ficco); Denver Museum of Art (Angelica Daneo & Emily Willkom); Hahnloser/Jaeggli Stiftung (Liselotte Schwarz & Theres Schwarz); Schweizerisches Institut für Kunstwissenschaft (SIK-ISEA) (Deborah Favre); Kunsthaus Zurich (Annine Soland); Hill-Stead Museum, Farmington (Anna Swinborne & Ana Alvarez); Grolier Club Library, New York (Scott Ellwood); Hirschl & Adler Galleries, Inc. (Eric W. Baumgartner); Triton Collection Foundation (Marlies Cordia); Artizon Museum, Tokyo (Kyoko Kagawa); Katherine Schmit; Corinne et Olivier Brayer; Serge Thillard; Sophie Voisin; Marie-Anne Devaux; Dr. Kuno Fischer; Dr. Sandra Sykora; Remy Dufour.