Acquired from the artist by the late owner, July 1974.
A. Bowness, ed., Henry Moore, Complete Sculpture, 1955-1964, London, 1986, vol. 3, p. 42, no. 457a (another cast illustrated, p. 43). J. Hedgecoe, Henry Moore, A Monumental Vision, Cologne, 2005, p. 224, no. 421 (another cast illustrated in color, p. 225).