LORNA SIMPSON, “Cloud,” 2005.   FEATURING AN ICONIC CLOUD ELEMENT, a major work by Lorna Simpson sold for $70,000 ($87,500 including fees) at Sotheby’s New York earlier this month. The price was an artist record, according Ask Art, Art Price, and Sotheby’s auction results. “Cloud,” a 2005 serigraph printed on felt in nine parts was...