G. Grappe, Catalogue du Musée Rodin, Paris, 1927, p. 73, no. 189 (another cast illustrated). A.E. Elsen, Rodin, New York, 1963, p. 219 (larger version illustrated, p. 95). I. Jianou and C. Goldscheider, Rodin, Paris, 1967, p. 107. A.T. Spear, Rodin Sculpture in the Cleveland Museum of Art, Cleveland, 1967, p. 21, no. IV (larger version illustrated, pl. 34). A.E. Elsen, Rodin and Balzac, Los Angeles, 1973, p. 69, no. 27 (larger version illustrated). J.L. Tancock, The Sculpture of Auguste Rodin, Philadelphia, 1976, p. 425, no. 73 (plaster version illustrated, p. 427). A.E. Elsen, Rodin's Art, The Rodin Collection of the Iris & B. Gerald Cantor Center for Visual Arts at Stanford University, New York, 2003, p. 403, no. 109 (large bronze version illustrated, pp. 367 and 403). A. Le Normand-Romain, The Bronzes of Rodin, Catalogue of Works in the Musée Rodin, Paris, 2007, vol. I, p. 167, no. S. 1074 (another cast illustrated, p. 166).