The Estate of Ileana Sonnabend, acquired directly from the artist
By descent to the present owner
WORKS FROM THE COLLECTION OF ILEANA SONNABEND AND THE ESTATE OF NINA CASTELLI SUNDELL
S. Hunter, et. al., Selections from the Ileana and Michael Sonnabend Collection: Works from the 1950s and 1960s, The Art Museum, Princeton University, 1985, p. 91 (illustrated).