Acknowledgements: Archive Farms, Bonni Benrubi Gallery, Classic Photographics, Creative Commons - Wikipedia, George Eastman Museum, Google Books, Interencheres - La Gallerie de Chartes, Internet - Original source ill-defined, Metropolitan Museum of Art, Musée français de la Photographie, Museum of the History of Science, National Gallery of Canada - The Origins of Photography: The Matthew R. Isenburg and Enhanced Isenburg Collections 1840-1880, National Science and Media Museum, New York Public Library, Private collection, Private collection of Alan Griffiths, Private collection of Jack and Beverly Wilgus, Private collection of Jan Weijers (Servatius), Provided by the artist - Mark Osterman, Provided by the artist - Stephen Berkman, Stereographica - Antique Photographica, Stockholms Auktionsverk. |