Private collection, Jutland, circa 1930
Acquired from the above by the present owner, 2010
Nyt Tidsskrift For Kunstindustri, no. 1, January 1928, p. 203
Åke Stavenow, ‘BO’s “Efteraars-udstilling”’, Form, 1935, p. 164
Grete Jalk, ed., Dansk Møbelkunst gennem 40 aar, Volume 2: 1937-1946, Copenhagen, 1987, p. 171
Tina Jørstian and Poul Erik Munk Nielsen, PH 100 Light&Design, exh. cat., Danish Museum of Art & Design, Copenhagen, 1994, p. 15
Tina Jørstian and Poul Erik Munk Nielsen, eds., Light Years Ahead: The Story of the PH Lamp, Copenhagen, 2000, pp. 181, 237-39 for images and a technical drawing