Solbert, Oscar N.; Newhall, Beaumont; Card, James g., eds. (May 1952). "The Misadventures of L.L, Hill"(PDF). Image, Journal of Photography of George Eastman House. 1 (5). Rochester, N.Y.: International Museum of Photography at George Eastman House Inc.: 2. Archived from the original(PDF) on 14 July 2014. Retrieved 22 June 2014.
Boudreau, Joseph. Color Daguerreotypes: Hillotypes Recreated. Pioneers of Photography: Their Achievements in Science and Technology. Springfield, VA: The Society of Imaging Science and Technology, 1987, distributed by the Northeastern University Press. *As cited in Lienhard, John (1997). "Hill's Color Photography". The Engines of Our Ingenuity, ep. 1220. Radio program, University of Houston.
web.archive.org
Solbert, Oscar N.; Newhall, Beaumont; Card, James g., eds. (May 1952). "The Misadventures of L.L, Hill"(PDF). Image, Journal of Photography of George Eastman House. 1 (5). Rochester, N.Y.: International Museum of Photography at George Eastman House Inc.: 2. Archived from the original(PDF) on 14 July 2014. Retrieved 22 June 2014.