Anne Windfohr Marion's great-grandfather bought a herd of 6666-branded cattle in 1875, and in 1912 he struck oil. Anne inherited the 245,000-acre ranch in 1980. She serves as chair of Burnett Oil Co. Founded a museum devoted to Georgia O'Keeffe in 1997, has featured exhibits by Arthur Dove, Jackson Pollock, Andy Warhol.
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