Literature
Exhibition catalogue, Sculpture by Leon Underwood, New York, N.M. Acquavella Galleries, 1962, n.p., no. 3, another cast illustrated.
C. Neve, Leon Underwood, London, 1974, pp. 198-199, p. 199, pl. 156, incorrectly titled 'Hill Rhythm', another cast illustrated.
B. Whitworth, The Sculpture of Leon Underwood, Much Hadham, 2000, pp. 115, 136, no. 151, fig. 97, another cast illustrated.
Exhibited
London, Beaux Arts Gallery, Leon Underwood, May - June 1953, no. 31, another cast exhibited.
London, Zwemmer Art Gallery, Sculpture and Drawings: Henry Moore, Marino Marini, Barbara Hepworth, F. E. McWilliam, Epstein, Leon Underwood, June 1957, catalogue not traced.
London, Kaplan Gallery, Sculpture by Leon Underwood, March 1961, no. 6, another cast exhibited.
New York, N.M. Acquavella Galleries, Sculpture by Leon Underwood, October - November 1962, no. 3, another cast exhibited.
London, Kaplan Gallery, Sculpture by Leon Underwood, April - May 1963, no. 33, another cast exhibited.
Colchester, The Minories, Leon Underwood: A Retrospective Exhibition, August 1969, no. 42, another cast exhibited.
London, Archer Gallery, Leon Underwood, Michael Aram and Georges Brunon, October - November 1969, no. 14, another cast exhibited, catalogue not traced.