Acknowledgements:
Boston Public Library - Print Department, Google Books, J. Paul Getty Museum, Larry Gottheim - Be-hold - Inc, National Gallery of Canada - The Origins of Photography: The Matthew R. Isenburg and Enhanced Isenburg Collections 1840-1880, National Science and Media Museum, Private collection of Dr. Russell A. Potter, Rijksmuseum, Royal Photograph Collection, Scott Polar Research Institute - University of Cambridge, Stereographica - Antique Photographica, The Courtauld Institute of Art. |
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