lower right in plate: J Johns / '60-'69; lower left in plate: GEMINI I
- The Art of Collaboration: Works from the National Gallery of Art's Gemini G.E.L. Archive, Academy Art Museum, Easton, Maryland, 9 Dec 2006 - 3 Feb 2007.
- "Stars and Stripes: The Story of the American Flag", Senator John Heinz Pittsburgh Regional History Center, Pittsburgh, PA, 2011.
- Gemini G.E.L. Catalogue Raisonné, no. 131.
- Field, Richard S. Jasper Johns: Prints 1960-1970. Philadelphia: Philadelphia Museum of Art, 1970.
- Sculpture: An Illustrated Catalogue. National Gallery of Art, Washington, 1994: 123, repro.