* {{enEn}} [https://web.archive.org/web/20091227215421/http://www.hrc.utexas.edu/exhibitions/permanent/wfp/ Harry Ransom Center, The University of Texas at Austin: The First Photograh]
* {{enEn}} [http://news.bbc.co.uk/2/hi/europe/1885093.stm BBC News, 21 March, 2002: World's oldest photo sold to library]
* {{enEn}} [https://web.archive.org/web/20151023162906/http://notesonphotographs.eastmanhouse.org/index.php?title=Niepceotype Niepceotype] na stránkách [[George Eastman House]]
