This mid to late 20th colorful pastel on black paper is by Abstract Surrealist San Francisco artist Michael di Cosola (1929-2010). Di Cosola studied at the Chicago Art Institute before moving to the Bay Area to study at the California College of Arts and Crafts in Oakland. He had a studio in North Beach during the height of the neighborhood's art scene and exhibited at several Bay Area art galleries in the 1960s. Di Cosola is known for psychedelic, Surrealist portraiture and abstractions.
February 15, 1986 Pastel and Graphite on Paper 9.75"x12.75" unframed