John Hannavy: Encyclopedia of nineteenth-century photography, Band 1.
Taylor & Francis Group, 2008 [1]
Terry E. Smith: Impossible presence: surface and screen in the photogenic era. University of Chicago Press, Chicago 2001, S. 82. [2]
The American Annual of Photography and Photographic Times Almanac for 1892, Band 6, 1892, S. 362 [4]
Nach dem Titelblatt des Buches Les Procédés d’Art en Photographie von Robert Demachy und Constant Puyo (Paris 1906) [5]
Terry E. Smith: Impossible presence: surface and screen in the photogenic era. University of Chicago Press, Chicago 2001, S. 82. Digitalisat bei books.google.de