Texas ranch heiress' art collection up for auction in New York, expected to fetch $150 mn Agencies Related DALLAS: An art collection worth an estimated $150 million that belonged to the late Texas oil and ranching heiress Anne Marion is going up for auction this spring in New York. Sotheby's said Wednesday that Marion's private collection includes works by Andy Warhol, Roy Lichtenstein and Franz Kline. Marion, who founded the Georgia O'Keeffe Museum in Santa Fe, New Mexico, died last year at the age of 81. Marion and her husband, John Marion, a former Sotheby's chairman and auctioneer, established the museum in 1997. The private collection of visionary philanthropist, renowned art collector, and legendary Texan, Anne Marion, will… https://t.co/AdJqdewcz9— Sotheby's (@Sothebys) 1614204095000