Exhibition catalogue, Henry Moore Recent Work, London, Marlborough Fine Art, 1963, n.p., no. 15, as 'Locking Piece', another cast illustrated.
P. James, Henry Moore on Sculpture, London, 1966, pp. 10, 145, no. 48, another cast illustrated.
Exhibition catalogue, Henry Moore Sculpture and Drawings, Plymouth, City Art Gallery, 1966, n.p., no. 42, as 'Sculpture Locking Piece', another cast illustrated.
I. Jianou, Henry Moore, Paris, 1968, pp. 86, 122, no. 500, pl. 42, as 'Locking Piece', another cast illustrated.
D. Sylvester, exhibition catalogue, Henry Moore, London, Arts Council of Great Britain, Tate Gallery, 1968, pp. 123, 143, no. 126, another cast illustrated.
R. Melville, Henry Moore Sculpture and Drawings 1921-1969, London, 1970, p. 298, no. 676-678, another cast illustrated.
J. Russell, Henry Moore, London, 1973, pp. 231, 270, pl. 137, another cast illustrated.
D. Finn, Sculpture and Environment, London, 1977, pp. 144-147, 364-367, another cast illustrated.
Exhibition catalogue, Henry Moore Sculptures et Dessins, Paris, Orangerie des Tuileries, 1977, p. 177, no. 103, another cast illustrated.
G. Shakerley, Henry Moore: Sculptures in Landscape, London, 1978, p. 120, pl. 40, another cast illustrated.
A. Bowness (ed.), Henry Moore, Complete Sculpture 1955-1964, Vol. 3, London, 1986, p. 60, no. 514, pls. 160-163, another cast illustrated.
A.G. Wilkinson, Henry Moore Remembered: The Collection at the Art Gallery of Ontario in Toronto, Toronto, 1987, pp. 206-207, no. 163, plaster version illustrated.
Exhibition catalogue, Henry Moore Intime, Tokyo, Sezon Museum of Art, 1992, pp. 102, 191, no. 1, another cast illustrated.
D. Ehrlich, Henry Moore, London, 1994, p. 75, another cast illustrated.
J. Hedgecoe, A Monumental Vision, The Sculpture of Henry Moore, New York, 1998, pp. 168-169, another cast illustrated.
Exhibition catalogue, Henry Moore: Back to a Land, Wakefield, Yorkshire Sculpture Park, 2015, p. 156, exhibition not numbered, another cast illustrated.