Enrico Crispolti, Lucio Fontana, ed. by Archivio Lucio Fontana, Milan, Brussels 1974, p. 109, no. 61 O 6 (illu. in black and white, assigned to the 1961 work group). Enrico Crispolti, Catalogo ragionato di sculture, dipinti, ambientazioni, Milan 2006, p. 363, no. 61 O 6 (illu. in black and white, assigned to the 1961 work group and with the note "Riferibile al 1961 nonostante la data inscritta"). "My discovery is the hole - period; and after this discovery, I can die with peace of mind [.]" Lucio Fontana, 1960s, quoted from Barbara Hess, Lucio Fontana 1899-1968, Cologne 2006, p. 7. "You can say what you want about the holes, but a new and purified art movement will emerge from them [.]." Lucio Fontana, 1953, quoted from Barbara Hess, Lucio Fontana 1899-1968, Cologne 2006, p. 8. Called up: June 7, 2024 - ca. 17.14 h +/- 20 min.