Inscription: Signed and dated (lower side): 79 I. Noguchi
Isamu Noguchi Foundation, Inc., New York (1979–81; their gift to MMA)
New York. Doris C. Freedman Plaza. "Isamu Noguchi: Unidentified Object," December 13, 1979–January 13, 1981 (lent by the artist).
Grace Glueck. "Guide to What's New in Outdoor Sculpture." New York Times (September 12, 1980), p. C20.
Lowery S. Sims in "Twentieth Century Art." Notable Acquisitions: 1980–1981. New York, 1981, pp. 70–71, ill.
"Unnamed, But Not Unwelcome." New York Times (July 30, 1981), p. B17, ill.
Kathleen Howard, ed. The Metropolitan Museum of Art Guide. New York, 1983, p. 427, no. 38, ill. (color).
Shaina Larrivee, ed. Isamu Noguchi Catalogue Raisonné. 2016 [ongoing], no. 928 [http://catalogue.noguchi.org/index.php/Detail/Object/Show/object_id/2484].