In order to accurately simulate the tonalities of the original gum print, Stieglitz printed this photogravure in duogravure using two plates with different colors. Comparing this duogravure to the original print held in the Metropolitan Museum of Art reveals just how accurate this process could be when employed with great skill.
Thornton, Gene. Masters of the Camera: Stieglitz, Steichen & Their Successors. New York: Ridge Press, 1976 p. 57