Richard  Diebenkorn   Untitled (Ocean Park), 1975 Charcoal on paper, 73.7 x 59.1 cm Solomon R. Guggenheim Foundation, Hannelore B. and Rudolph B. Schulhof Collection, bequest of Hannelore B. Schulhof, 2012 2012.47 © The Richard Diebenkorn Foundation credits: Hangar Design Group