Private Collection, Italy
Phillips de Pury & Company, New York, "Design," June 3, 2009, lot 12
Guglielmo Ulrich, Arredatori Contemporanei, Milan, 1949, n.p. for a similar eight-arm example
Alberto Bassi, Italian Lighting Design: 1945-2000, Milan, 2004, p. 31 for a similar eight-arm example
Franco Deboni, Fontana Arte: Gio Ponti, Pietro Chiesa, Max Ingrand, Turin, 2012, cat. no. 107, p. 78