Acknowledgements: Bibliothèque Nationale de France - Département des Estampes et de la Photographie, CEROS - Jean-Mathieu Martini / Serge Plantureux, Cleveland Museum of Art, George Eastman Museum, Google Books, Lee Gallery, Private collection of Peter Spangenberg, SFMOMA - San Francisco Museum of Modern Art, The Romantic Agony Book & Print Auctions, Victoria and Albert Museum. |