More than 90 paintings and drawings by Henri Matisse (1869-1954) and Richard Diebenkorn (1922-1993) show the French modern masters enduring influence .brHow do works by two painters from two different eras compare when we see them side by side? A new exhibition is answering that question. The show featured .brA master of contemporary American art, Richard Diebenkorn (1922-1993) was noted for landscape paintings, thoughtful figure studies, and geometric abstracts.brOn September 7, 2013 the de Young hosted a daylong symposium in association with the special exhibition, Richard Diebenkorn: The Berkeley Years, .