Joseph Paul Hodin, Barbara Hepworth, London, 1961, no. 246, illustration of another cast p. 170 (titled Meridian, Model for State House)
Elizabeth Coxhead, Women in the Professions, London, 1961, illustrated between pp. 16 & 17
Norbert Lynton, "Barbara Hepworth, Gimpel Fils" in The Arts Review, London, June 17, 1961, vol. 13, no. 11, p. 11
Barbara Hepworth (exhibition catalogue), Whitechapel Art Gallery, London, 1962, no. 36, illustration of another cast n.p.
Anita Brookner, "Current and Forthcoming Exhibitions: London" in The Burlington Magazine, vol. 104, no. 711, June 1962, p. 272 (titled Meridian)
Mervyn Levy, "Impulse and Rhythm: The Artist at Work - 9" in Studio, vol. 164, no. 833, September 1962, illustrated pp. 87 & 90
John Fitzmaurice Mills, "Barbara Hepworth - at the Rietveld Pavilion, Kröller-Müller Museum" in Connoisseur, vol. 159, no. 642, August 1965, illustration of another cast p. 243
Alan Bowness, A Guide to the Barbara Hepworth Museum, St. Ives, 1976, no. 18, p. 6 (titled Garden sculpture (Meridian))
David Fraser Jenkins, Barbara Hepworth: A Guide to the Tate Gallery Collection at London and St. Ives, Cornwall, London, 1982, pp. 17 & 18; illustration of another cast p. 31
The Tate Gallery 1980-82: Illustrated Catalogue of Acquisitions, London, 1984, illustration of another cast p. 116
Walter John Strachan, Open Air Sculpture in Britain: a Comprehensive Guide, London, 1984, illustration of another cast p. 158
Edwin Mullins, A Love Affair with Nature: A Personal View of British Art, Oxford, 1985, illustrated p. 68
Matthew Gale & Chris Stephens, Barbara Hepworth: Works in the Tate Gallery Collection and the Barbara Hepworth Museum St. Ives, London, 1999, no. 46, pp. 122, 166, 182-87 & 238; illustration in color of another cast p.183 & illustrations of the plaster p. 184
Miranda Phillips & Chris Stephens, Barbara Hepworth Sculpture Garden, London, 2002, pp. 8 & 46; illustration of another cast pp. 17 & 46
Antonia Boström, ed., The Encyclopedia of Sculpture, vol.II, New York & London, 2004, p. 745
Harriet P. Bos, John Boyer & Michael Godfrey, Bechtler Museum of Modern Art, Charlotte, 2009, p. 94; illustration in color of another cast p. 95
Rachel Smith, "Figure and Landscape: Barbara Hepworth’s Phenomenology of Perception" in Tate Papers, London, November 19, 2013, no. 20, illustrated n.p.
Sophie Bowness, ed., Barbara Hepworth - The Plasters: The Gift to Wakefield, Farnham & Burlington, 2011, pp. 58, 64 & 93 (notes 106 and 114); illustration of the plaster pp. 64, 66 & 67, pls. 61, 63 & 64
Peter Beacham & Nikolaus Pevsner, The Buildings of England: Cornwall, New Haven & London, 2014, p. 561
Sophie Bowness, ed., Barbara Hepworth: Writings and Conversations, London, 2015, p. 152
Sophie Bowness, Barbara Hepworth: The Sculptor in the Studio, London, 2017, pp. 113 & 116; illustrated p. 60 & illustration of the plaster p. 120
Barbara Hepworth: Sculpture for a Modern World (exhibition catalogue), Tate Britain, London; Kröller-Müller Museum, Otterlo & Arp Museum, Rolandseck, 2015-16, no. 103, illustration of another cast p. 178