by later hand, lower right verso in graphite: Diebenkorn: Combination WP* NGA
- Yes, No, Maybe: Artists Working at Crown Point Press, National Gallery of Art, Washington, D.C., 1 Sep 2013 - 5 Jan 2014.
- Brodie, Judith. "Yes, No, Maybe: Artists Working at Crown Point Press." Bulletin / National Gallery of Art, no. 48 (Spring 2013): 34-35.