Acknowledgements: Amazon - Germany, American Art Museum - Smithsonian Institution, Amon Carter Museum, Antiq-Photo, Archive Farms, Bernard J. Shapero Rare Books, Bibliothèque Nationale de France - Département des Estampes et de la Photographie, British Library, CCA: Canadian Centre for Architecture, Charles Isaacs Photographs - Inc, Charles Schwartz Ltd, Christie's - New York, Christopher Wahren Fine Photographs, Creative Commons - Wikipedia, Dominic Winter Book Auctions, Etherton Gallery, George Eastman House, Google Books, Harry Ransom Humanities Research Center at the University of Texas at Austin, J. Paul Getty Museum, Jefferson Stereoptics, Jeffrey Kraus Antique Photographica, Lee Gallery, Library of Congress - Prints and Photographs Division, Massachusetts General Hospital - Archives and Special Collections, McCord Museum of Canadian History, Missouri Historical Society, Musée d'Orsay, Musée français de la Photographie, Museum Dr. Guislain, Museum Ludwig / Agfa Photo-Historama, National Archives and Records Administration, National Galleries of Scotland, New York Public Library, Paul Frecker, Photoseed, Pierre Spake Fine Art, Private collection, Private collection of Edward Grazda, Private collection of Graham Pilecki, Private collection of Jan Weijers (Servatius), Private collection of Manuel Magalhaes, Royal Photograph Collection, Sheffield City Council - Library Service, Stereoviews: Stereoviews and Fine 19th & 20th Century Antique Photographs, Swann Galleries - New York, The Courtauld Institute of Art, Victoria and Albert Museum, Vintage-Photos, Wellcome Images - Wellcome Library, Yale University - Beinecke Rare Book and Manuscript Library. |