Hubert Croxley, 'Hans Arp', in Cahiers d'art, nos 5-6, 1928, pp.228-30, p.228 (ill.).

Christian Zervos, Histoire de l'Art Contemporain, Paris: Editions Cahiers d'art, 1938, p.442 (ill.).

Léon Degard, 'La Biennale de Venise', in Art d'aujourd'hui, vol. 5, no. 6, 1954, pp.23-5, p.23 (ill. with date as 1924).

Carola Giedion-Welcker, Hans Arp, catalogue of sculptures and bibliography by Marguerite Arp-Hagenbach, Stuttgart: Hatje, 1957, published in English as Jean Arp, New York: Harry N. Abrams, 1957, n.p. (ill. pl. 10, with date as 1924).

Michel Seuphor, Die Plastik unseres Jahrhunderts, Cologne: DuMont Schauberg, 1959, p.216 (ill. on its side).

Michel Seuphor, La Sculpture de ce Siècle: Dictionnaire de la Sculpture Moderne, Neuchâtel: Editions due Griffon, 1959, p.216 (ill.). Michel Seuphor, Arp, Amsterdam: Allert de Lange, 1961, n.p. (ill. no. 22, with date as 1924).

Robert Goldwater, Space and Dream, New York: Walker and col, 1967, (ill. col. title-page).

Claude Schaeffner (ed.), Futurism and Dadaism, Paris: Editions Recontre Lausanne, 1967, p.83 (ill. col.).

Herbert Read, The art of Jean Arp, London: Thames and Hudson, 1968, p.73 (ill. col.).

Patrick Waldberg, Les Demeures d'Hypnos, Paris: Editions de la Différence, 1976, p.195 (ill.).

Bernd Rau, Hans Arp: Die Reliefs, Oeuvre-Katalog, Stuttgart: Hatje, 1981, p.26, cat. no. 40 (ill.).