Literature
D. Bourdon, Calder: Mobilist/Ring Master/Innovator, New York, 1980, p. 81 (illustrated).
S. Thierry, ed., The intimate World of Alexander Calder, exh. cat., Paris, Musée des Art Décoratif, 1989, p. 268 (illustrated in color).
A. Rower, et. al., eds., Calder Jewelry, New York, 2007, pp. 181 and 250, fig. 19 (illustrated).
Exhibited
New York, Willard Gallery, Calder Jewelry, December 1940.
Berlin, Akademie der Kunst, Alexander Calder, May-July 1967, p. 99 (illustrated).