Robert Smithson

American, active 1881–1940

American, 1848–1933

American, 1938–2011

American, 1904–1971

American, 1857–1926

American, 1928–1987

American, born 1949

American, 1904–1968

American, born Switzerland, 1924–2019

American, born in Java, Indonesia, 1868–1950