Eduard Trier, Marino Marini, Cologne, 1954, illustration of another cast pl. 28; Helmut Lederer and Eduard Trier, The Sculpture of Marino Marini, London and Stuttgart, 1961, no. 68, illustration of another cast; Patrick Waldberg, Herbert Read and Gualtieri di San Lazzaro, Marino Marini, Complete Works, New York, 1970, no. 315, illustration of another cast p. 370 (with incorrect measurements); Carlo Pirovano, Marino Marini, Scultore, Milan, 1972, no. 319, illustration of another cast p. 166 (with incorrect measurements); Carlo Pirovano, ed., Marino Marini, Catalogo del Museo di San Pancrazio di Firenze, Milan, 1988, pls. 149 & 150, illustrations of another cast pp. 160 & 161; Carlo Pirovano, Il Museo Marino Marini a Florence, Milan, 1990, illustration of another cast p. 33; Marco Meneguzzo, Marino Marini – Cavalli e Cavalieri, Milan, 1997, no. 78, illustration of another cast pp. 143-147; Fondazione Marino Marini, ed., Marino Marini, Catalogue Raisonné of the Sculptures, Milan, 1998, no. 377b, edition catalogued p. 265; no. 377a, illustration of the polychrome plaster p. 264