supported the foundation. Duke was also friends with artist Andy Warhol. Historic properties include Rough Point, Samuel Whitehorne House, Prescott Farm, the Buloid-Perry House, the King's Arms Tavern, the Baptist Meetinghouse, and the Cotton House. Seventy-one buildings are rented to tenants. Only five function as museums. Duke's extensive travels led to an interest in a variety of cultures, and during her lifetime she amassed a considerable collection of Islamic and Southeast Asian art. After her death, numerous pieces were donated to The Asian Art Museum of San Francisco and the Walters Art Museum of Baltimore. Duke did much additional philanthropic work and was a major benefactor of medical research and child welfare programs. In the late 1980s, Duke donated $2 million to Duke University to be used for AIDS research. Her foundation, Independent Aid, became the Doris Duke Foundation, which still exists as a private grant-making entity. After her death, the Doris Duke Charitable Foundation was established in 1996, supporting four national grant making programs and Doris Duke's three estates, Shangri La, Rough Point, and Duke Farms. Trusts and wills Duke was the life beneficiary of two trusts created by her father, James Buchanan Duke, in 1917 and 1924. The income from the trusts was payable to any children after her death. In 1988, at the age of 75, Duke legally adopted a woman named Chandi Heffner, then a 35-year-old Hare Krishna devotee and sister of the third wife of billionaire Nelson Peltz. Duke initially maintained that Heffner was the reincarnation of her only biological child Arden, who died soon after birth in 1940. The two women had a falling out, and the final version of Duke's will specified that she did not wish Heffner to benefit from her father's trusts; she also negated the adoption. Despite the negation, after Duke's death, the estate's trustees settled a lawsuit brought by Heffner for $65 million. In her final will, Duke left virtually all of her fortune to several existing and new charitable foundations. She appointed her butler, Bernard Lafferty, as executor of her estate. Lafferty appointed the U.S. Trust company as corporate co-executor. Lafferty and Duke's friend Marion Oates Charles were named as her trustees. However a number of lawsuits were filed against the will. At death, Duke's fortune was estimated at upwards of $1.2 billion. The best-known lawsuit was initiated by Harry Demopoulos. In an earlier will, Demopoulos had been