Acquired directly from the artist, circa 1977
Thence by descent to the present owner
Harry Bertoia: An Exhibition of His Sculpture and Graphics, exh. cat., Allentown Art Museum, 1975, p. 52 for a similar example
Nancy N. Schiffer and Val O. Bertoia, The World of Bertoia, Atglen, 2003, pp.230-33 for similar examples