Signed lower right "Cornin," dated "LVII" for 1957, and titled verso "Uncial." Jon Cornin first studied with Raphael Soyer at New York's Art Student's League and, subsequently, at the Grand Central School of Art. Using the pseudonym, CorKa, he and his wife, Zena Kavin produced cartoons for Saturday Evening Post and the New Yorker from 1941-1952. The Cornins moved to the San Francisco Bay area in 1940 and settled in Oakland. In addition to his career as a painter, Jon Cornin was also a noted teacher, respected theorist of Modernism and the author of 'Painter's Credo: Selected Notes' (Stone House Press, 1985). He exhibited widely and with success and was the recipient of numerous prizes, medals and juried awards. Partial List of Exhibitions: Museum of New Mexico, 1937-39; Oakland Art Gallery, 1939-45; San Francisco Museum of Art, 1938, 1940, 1945; California Watercolor Society, 1948-49; Denver Museum, 1946; California Palace of the Legion of Honor, 1948; et al.