�Peter Young: 1963-1977,” organized by Alanna Heiss and David Deutsch. P.S. 1 Contemporary Art Center, Long Island City, Queens, NY. Through Sept. 24. �Peter Young: Folded Mandalas & Oaxacan Paintings,� Mitchell Algus Gallery, Chelsea, NY. Through Aug. 17. In the NYTimes, Roberta Smith reports: “By 1969 he was part of […]