«US News». Time Magazine. 29 de junio de 1962. Archivado desde el original el 19 de febrero de 2011. Consultado el 22 de julio de 2008. «All but passed over in the latest parceling was Skipper's Aunt Doris Duke—Nanaline's daughter—already worth an estimated $70 million, who was merely bequeathed some of her mother's jewelry. When auctioned off by Christies several years ago, those pieces of jewelry, which included a 20 carat diamond ring from Tiffany & Co., fetched over $4,000.000.»
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«US News». Time Magazine. 29 de junio de 1962. Archivado desde el original el 19 de febrero de 2011. Consultado el 22 de julio de 2008. «All but passed over in the latest parceling was Skipper's Aunt Doris Duke—Nanaline's daughter—already worth an estimated $70 million, who was merely bequeathed some of her mother's jewelry. When auctioned off by Christies several years ago, those pieces of jewelry, which included a 20 carat diamond ring from Tiffany & Co., fetched over $4,000.000.»
«New Greenhouse». Duke Farms. Archivado desde el original el 22 de junio de 2007. Consultado el 7 de mayo de 2008.
«History». Duke Farms. Archivado desde el original el 11 de enero de 2008. Consultado el 11 de febrero de 2008.
