G. Grappe, Catalogue du Musée Rodin, Paris, 1927, p. 68, no. 171 (another cast illustrated).<br>M. Aubert, Rodin Sculptures, Paris, 1952, p. 50 (another cast illustrated).<br>R. Descharnes and J.-F. Chabrun, Auguste Rodin, Lausanne, 1967, p. 249 (plaster version illustrated).<br>I. Jianou and C. Goldscheider, Rodin, Paris, 1967, p. 103 (another cast illustrated, pl. 77).<br>J.L. Tancock, The Sculpture of Auguste Rodin, Philadelphia, 1976, pp. 288 and 291 (another cast illustrated, p. 290, fig. 46-2).<br>A.E. Elsen, In Rodin's Studio, A Photographic Record of Sculpture in the Making, Ithaca, 1980 (larger version illustrated in situ, fig. 95).<br>A.E. Elsen, ed., Rodin Rediscovered, exh. cat., National Gallery of Art, Washington, D.C., 1981, p. 111 (larger version illustrated, fig. 5.13).<br>J.M. Roos, "Rodin's Monument to Victor Hugo, Art and Politics in the Third Republic," The Art Bulletin, vol. 68, no. 4, December 1986, pp. 650-656 (another cast illustrated, fig. 24).<br>A. Le Normand-Romain, The Bronzes of Rodin, Catalogue of Works in the Musée Rodin, Paris, 2007, vol. II, pp. 452-454 (another cast illustrated, fig. 1).