Last summer I posted links to obituaries for Cy Twombly and Lucian Freud. Let me add the names of a few more noteworthy figures in 20th-century art who have passed away since then:

• Richard Hamilton, 1922-2011. British pioneer of Pop art, most famous for his 1956 collage, Just What Is It That Makes Today’s Homes So Different, So Appealing?
• John Chamberlain, 1927-2011. American sculptor who worked in crushed automobile metal.
• Helen Frankenthaler, 1928-2011. American painter, associated with both Abstract Expressionist and Color-field painting.