Letter from R. Magritte to A. Iolas, 13 January 1954. L. Scutenaire, "En parlant un peu de Magritte" in Cahiers d'art, Paris, 1955, p. 256. A. Bosmans, Le socle de la nuit, Verviers, 1959 (illustrated as the frontispiece). Letter from R. Magritte to A. Bosmans, 6 April 1959. La tendance populaire surréaliste, 14 May 1961 (illustrated). J.K., "René Magritte [Landry]" in Art News, December 1961, p. 14 (illustrated). H. Torczyner, "The Magic of Magritte" in The Art Gallery, January 1964, p. 9 (illustrated). A. Breton, Le Surréalisme et la peinture, Paris, 1965, p. 270 (illustrated). P. Waldberg, René Magritte, trans. A. Wainhouse, Brussels, 1965, p. 343, no. 119 (illustrated in color). R. Passeron, René Magritte, Paris, 1970, p. 59 (illustrated in color). H. Torczyner, Magritte: Ideas and Images, trans. R. Miller, New York, 1977, p. 207, no. 457 (illustrated in color). Letter from R. Magritte to A. Bosmans, 9 April 1959, in R. Magritte (F. Perceval, ed.), Lettres à André Bosmans 1958-1967, Paris, 1990, p. 45. H. Torczyner, L'ami Magritte: correspondance et souvenirs, Antwerp, 1992, p. 20 (illustrated in color); pp. 132 and 171 (illustrated, p. 117). D. Sylvester, ed., René Magritte, Catalogue raisonné, London, 1993, vol. III, p. 179, no. 756 (illustrated, p. 178). R. Magritte, Magritte/Torczyner: Letters Between Friends, New York, 1994, p. 44 (illustrated).