lower left in graphite: Sky S.P.; lower center in graphite: Philip Guston '80; lower left verso stamped: @ Gemini G.E.L., Los Angeles; lower left verso in graphite: PG 79-928
Marks and Labels
BS: Gemini copyright, Gemini chop
- 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.
- GEM 1064.