Phillips de Pury & Company, London, "Design," September 25, 2008, lot 89
Acquired from the above
"Nuovi Disegni Italiani," Domus, no. 433, December 1969, n.p.
Ignazia Favata, Joe Colombo Designer 1930-1971, Milan, 1988, pp. 38-39
Mateo Kries, Joe Colombo Inventing the Future, Weil am Rhein, 2005, p. 147, fig. 90