Georges Grappe, Catalogue du Musée Rodin, Paris, 1927, illustration of the plaster version p. 52. Bernard Champigneulle, Rodin, London, 1967, illustrations of the monumental version pp. 69-102. Robert Descharnes & Jean-Francois Chabrun, Auguste Rodin, Lausanne, 1967, illustration of the monumental version p. 114. Ionel Jianou & Cécile Goldscheider, Rodin, Paris, 1967, illustration of the monumental bronze p. 97. Ludwig Goldscheider, Rodin Sculptures, London, 1970, illustration of the plaster version pl. 38. John L. Tancock, The Sculpture of Auguste Rodin, Philadelphia, 1976, illustration of another cast p. 390. Jacques de Caso & Patricia B. Sanders, Rodin's Sculpture, A Critical Study of the Spreckels Collection, California Palace of the Legion of Honor, San Francisco, 1977, no. 43, illustration of another cast p. 222. Albert E. Elsen, Rodin's Art, The Rodin Collection of the Iris & B. Gerald Cantor Center for Visual Arts at Stanford University, New York, 2003, no. 15, illustration of another cast p. 103. Antoinette Le Normand-Romain, The Bronzes of Rodin, Catalogue of Works in the Musée Rodin, vol. I, Paris, 1997, illustration of another cast p. 230