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Portrait of American First Lady of The United States Nancy Reagan (born Anne Frances Robbins), 1981. (Photo by Stock Montage/Getty Images)

Portrait of American First Lady of The United States Nancy Reagan (born Anne Frances Robbins), 1981. (Photo by Stock Montage/Getty Images)

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LOS ANGELES - 1980: President Ronald Reagan and wife Nancy Reagan pose for a portrait in 1980 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)

LOS ANGELES - 1980: President Ronald Reagan and wife Nancy Reagan pose for a portrait in 1980 in Los Angeles, California.  (Photo by Harry Langdon/Getty Images)

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Nancy Reagan Visiting with Schoolchildren

Nancy Reagan Visiting with Schoolchildren

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Washington, DC. 9-23-1987 First Lady Nancy Reagan accepts on behalf of the "Just Say No Club" a check from the Proctor & Gamble company for $150,000. Credit: Mark Reinstein (Photo by Mark Reinstein/Corbis via Getty Images)

Washington, DC. 9-23-1987 First Lady Nancy Reagan accepts on behalf of the "Just Say No Club" a check from the Proctor & Gamble company for $150,000. Credit: Mark Reinstein (Photo by Mark Reinstein/Corbis via Getty Images)

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WASHINGTON - MAY 11: Former First Lady Nancy Reagan speaks at the end of the "A Nation Honors Nancy Reagan", dinner at the Ronald Reagan Building May 11, 2005 in Washington, DC. The event was held to pay tribute to Reagan and celebrate her life and her accomplishments. (Photo by Joe Raedle/Getty Images)

WASHINGTON - MAY 11:  Former First Lady Nancy Reagan speaks at the end of the "A Nation Honors Nancy Reagan", dinner at the Ronald Reagan Building May 11, 2005 in Washington, DC. The event was held to pay tribute to Reagan and celebrate her life and her accomplishments.  (Photo by Joe Raedle/Getty Images)