BEACON, NY.- Dia Art Foundation features a new phase in Dia’s retrospective of works by Agnes Martin. Dia's retrospective of works by Agnes Martin enters its second phase with "…unknown territory…" While part one, "…going forward into unknown territory…," concentrated on Martin's formative years 1957 to 1960, within the decade that she spent in New York City (1957 to 1967), part two continues a study of that decade, focusing now on the mid-1960s with her signature grid paintings. Shown in the diffused natural light of Dia's galleries, this exhibition makes available classic works rarely seen due to their fragility and rarity. Closing November 7, 2005, "…unknown territory…" will be followed in December 2005 by an installation of paintings from the years 1974 to 1979. This retrospective of Martin’s work will continue in installments over the next three years.