lower right in graphite: SW Hayter 18 Jan 47.; lower center in graphite: Unstable Woman; lower left in graphite: E 1/5
Jacob and Ruth Cole Kainen (RCK ownership stamp), Chevy Chase, MD; gift to NGA, 1994.
- Recent Acquisitions of Works of Art on Paper, National Gallery of Art, Washington, 1995.
- Black, Peter and Desiree Moorhead. The Prints of Stanley William Hayter: A Complete Catalogue. Mount Kisco, NY, 1992.