Letter from R. Magritte to P. Nougé, 17 January 1948.
Letter from R. Magritte to A. Iolas, 8 January 1949.
Letter from B. Jackson to R. Magritte, 5 June 1949.
Letter from A. Iolas to R. Magritte, 5 July 1949.
Letter from A. Iolas to R. Magritte, 12 December 1949.
Letter from R. Magritte to A. Iolas, 16 December 1949.
Letter from R. Magritte to A. Bosmans, 20 September 1961.
L. Pierard, "Magritte: Le Surréaliste" in Le Peuple , 30 January 1948.
L. Scutenaire, Magritte , Antwerp, 1948 (illustrated, pl. 17).
Magritte , exh. cat., Galleria l"Attico, Rome, January 1963 (illustrated; dated 1945).
J. Canaday, "Floating Rocks and Flaming Tubas" in Horizon , vol. V, no. 3, January 1963, p. 82 (illustrated in color, p. 83).
N. Calas, "Pearls of Magritte" in Arts Magazine , vol. 46, April 1972, pp. 47-49, no. 6.
L. Scutenaire, Avec Magritte , Brussels, 1977, p. 130 (illustrated).
H. Torczyner, Magritte: Ideas and Images , New York, 1977, pp. 153 and 268, no. 302 (illustrated, p. 153).
F. Perceval, ed., René Magritte: Lettres à André Bosmans, 1958-1967 , Paris, 1990, p. 201.
S. Gablik, Magritte , New York, 1991, pp. 31 and 200, no. 21 (illustrated, p. 30).
D. Sylvester, ed., René Magritte, Catalogue Raisonné: Oil Paintings and Objects, 1931-1948 , London, 1993, vol. II, pp. 395-396, no. 638 (illustrated, p. 395).
R. Hughes, The Portable Magritte , New York, 2001, pp. 265 and 435 (illustrated in color, p. 265).
A. Blavié, ed., René Magritte: Ecrits complets , Paris, 2016, p. 261.