Phillips de Pury & Company New York, 7 June 2007, lot 100
Camera Work, Number 36, October 1911
Greenough, Alfred Stieglitz: The Key Set (Volume One), pl. 93
Margolis, Alfred Stieglitz, Camera Work: A Pictoral Guide, pl. XV
Norman, Alfred Stieglitz: An American Seer, pl. IV there dated 1893
Taschen, Alfred Stieglitz, Camera Work: The Complete Illustrations 1903-1917, p. 596
The Museum of Fine Arts, Boston, Alfred Stieglitz: Photographer, pl. 2
Whelan, Alfred Stieglitz: A Biography, Photography, Georgia O'Keeffe, and the Rise of the Avant-Garde in America, n.p. there dated 1893