BIOGRAFIE
| 1944 | born in Berkeley, CA |
| 1963 - 1964 | attended San Francisco Art Institute, San Francisco, CA |
AUSSTELLUNGEN
| 2019 | BÖHM CHAPEL, CIT Art Foundation, Hürth Kalscheuren, Germany |
| 2009 | Whitney Museum of American Art, New York, USA Kunsthalle Bielefeld, Germany |
| 2008 | El Sourdog Hex, Berlin, Germany |
| 2007 | Beacon, USA |
| 2006 | PaceWildenstein, New York, USA Jablonka Galerie, Cologne, Germany |
| 2005 | Franklin Parrasch Gallery, New York, USA |
| 2003 | Detroit Institute of Arts, Detroit, USA Peter Freeman, New York, USA |
| 1997 | 47th International Venice Biennale, Venice, Italy |
| 1994 | Michael Heizer, Ace Gallery, New York, USA |
| 1990 | Tony Shafrazi Gallery, New York, USA |
| 1989 | Akira Ikeda Gallery, Tokyo, Japan |
| 1988 | Tony Shafrazi Gallery, New York, USA |
| 1985 | Whitney Museum of American Art, New York, USA |
| 1984 | Museum of Contemporary Art, Los Angeles, USA |
| 1983 | Oil & Steel Gallery, New York, USA |
| 1980 | St. Louis Art Museum, St. Louis, USA |
| 1979 | Museum Folkwang, Essen, Germany Rijksmuseum Kröller-Müller, Otterlo, The Netherlands |
| 1977 | Whitney Museum of American Art, New York, USA Documenta 6, Kassel, Germany |
| 1976 | Xavier Fourcade, Inc., New York, USA |
| 1974 | Fourcade, Droll, Inc., New York, USA |
| 1971 | Solomon R. Guggenheim Museum, New York, USA |
| 1970 | Virginia Dwan Gallery, New York, USA |
| 1969 | Galerie Heiner Friedrich, Munich, Germany Herbert F. Johnson Museum of Art, Ithaca, USA Kunsthalle Bern, Switzerland |
| 1968 | Whitney Museum of American Art, New York, USA |
| 1967 | Park Place Gallery, New York, USA |
WERKE IN SAMMLUNGEN
| Museum of Contemporary Art, Los Angeles, CA Museum of Modern Art, New York, NY Nevada Museum of Art, Reno, NV |


