W. Grohmann, The Art of Henry Moore, London, 1960, p. 7, no. 94, another cast illustrated, as "Helmet Head No. 6".
Exhibition catalogue, Henry Moore, New York, Knoedler Galleries, 1962, n.p., no. 3, another cast illustrated.
I. Jianou, Henry Moore, Paris, 1968, p. 76, no. 263, pl. 20, another cast illustrated.
R. Melville, Henry Moore: Sculpture and Drawings 1921-1969, London, 1970, p. 355, pls. 401-402, another cast illustrated.
W.S. Lieberman, exhibition catalogue, Henry Moore: 60 Years of His Art, New York, Metropolitan Museum of Art, 1983, pp. 70, 123, exhibition not numbered, another cast illustrated.
A. Bowness (ed.), Henry Moore: Complete Sculpture 1949-54, Vol. 2, London, 1986, pp. 28-29, no. 279, pls. 21-23, another cast illustrated.
J. Hedgecoe, A Monumental Vision: The Sculpture of Henry Moore , London, 1998, p. 213, no. 264, another cast illustrated.
D. Kosinski, exhibition catalogue, Henry Moore: Sculpting the 20th Century, Dallas, Museum of Art, 2001, pp. 187, 310, no. 53, another cast illustrated.
T. Capwell and H. Higham, exhibition catalogue, Henry Moore: The Helmet Heads , London, The Wallace Collection, 2019, pp. 12-13, 86, 145, no. 36, another cast illustrated.