Color halftone from an autochrome by Alvin Langdon Coburn.
Foster, Sheila J, Manfred Heiting, and Rachel Stuhlman. Imagining Paradise: The Richard and Ronay Menschel Library at George Eastman House, Rochester. Göttingen: Steidl, 2007 p. 240
Taylor, John. Pictorial Photography in Britain, 1900-1920. Cambridge, England: Chadwyck-Healey, 1900. p. 8.