Minimalist artist who used simple elements and materials to create complex works. Some of his output included "Grey Window Wall" from 1964 and the 12-canvas "Column Structure" series from 2006-07.
He attended the Cleveland Institute of Art from 1956 until 1959 and Yale University from which he graduated with a BFA in 1961 and an MFA in 1963.
His first prints were made for Crown Point Press in 1972.
He married Sylvia Plimack in 1961. He was the father of director and screenwriter
He was influenced by Hans Hofmann.