A 1982 abstract mixed media painting by American artist Harry Hilson (1935-2004) titled, "Secret Umbra." Composed of gouache, graphite, and colored pencil on paper, abstract lines and circular shapes are illustrated in neon colors upon a gray ground in this abstract work. The painting is signed, titled, and dated “Hilson Secret Umbra 7/6/82”. Harry Hilson was active from the 1950s-2000. He created a variety of works, including oil paintings, ink drawings, wool tapestries, and more. His studios could be found in New York, Los Angeles, and Aspen.