Richard Diebenkorn
(1922- 1993)
 

Richard Diebenkorn was an American painter and printmaker. His early work is associated with abstract expressionism and the Bay Area Figurative Movement of the 1950s and 1960s. In the late 1960s he began his extensive series of geometric, lyrical abstract paintings. Known as the Ocean Park paintings, these paintings were instrumental to his achievement of worldwide acclaim

https://en.wikipedia.org/wiki/Richard_Diebenkorn

Green
1986
color spitbite aquatint, soapground aquatint, and drypoint on Somerset paper
114.3 x 89.5 cm
National Gallery of Art, Washington
https://www.nga.gov/collection/art-object-page.96577.html