Elizabeth Luther Carey, “Art at Home and Abroad,” New York Times, March 22, 1914, p. SM11.Henry McBride, New York Sun, March 22, 1914, page number unknown. Cited in Camera Work 45 (January 1914 / June 1914), p. 26.Charles H. Caffin in the New York American. Cited in Camera Work 45 (January 1914 / June 1914), p. 26.S.P., “A Stieglitz Tribute,” New York Times, August 22, 1965, p. X 17 (ill.).Mircea Deac, Constantin Brâncus?i (Bucarest 1966), pp. 103 (fig. 52), 156.Athena Tacha Spear, “A Contribution to Brancusi Chronology,” Art Bulletin 48 (March 1966), p. 53.Sidney Geist, Brancusi: A Study of the Sculpture, New York 1968, p. 218 (no. 57d).Nora B. Beeson. Guide to The Metropolitan Museum of Art. MMA. NY, 1972, p. 277, illustrated p. 276 no. 4.Sidney Geist, Brancusi: The Sculpture and Drawings. New York 1975, p. 178 (no. 73c).Pontus Hultén, Natalia Dumitresco, and Alexandre Istrati, Brancusi, Paris 1986, p. 284 (no. 62c).Radu Varia, Brancusi, trans. Mary Vaudoyer, New York 1986, p. 139 (ill.). Friedrich Teja Bach, Constantin Brancusi: Metamorphosen Plastischer Form Köln 1987, pp. 430-31 (no. 99).Gary Tinterow et al. The Metropolitan Museum of Art: Modern Europe, New York 1987, p. 117 (ill.).Anna C. Chave, Constantin Brancusi: Shifting the Bases of Art, New Haven and London 1993, p. 129 (fig. 4.6), unpaginated color plate.Greenough, Sarah, et. al. Modern Art and America: Alfred Stieglitz and His New York Galleries. National Gallery of Art, 2000. Cat. no. 36, p. 156, 158, 159 (ill. in color), 163.