Rex Ashlock was an American Abstract Expressionist painter. He taught at the main art schools of the Bay Area before moving to New York in 1957, where he taught at MoMA.
Featured image: Rex Ashlock - Abstraction with Blue Moon, 1964 (detail). Oil on canvas. 52 × 44 in. 132.1 × 111.8 cm. This is a unique work. Photo courtesy Robert Fontaine Gallery