Literature
Norman, Alfred Stieglitz: An American Seer, Aperture/Random House, 1973, pl. XLIV, there reproduced upside-down and dated 1936; Greenough, Alfred Stieglitz: The Key Set, National Gallery of Art, Washington, D.C./Harry N. Abrams, 2002, Volume Two, cat. no. 1257, p. 721, there dated 1929