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Portrait of American First Lady Mamie Eisenhower (born Mamie Geneva Doud, 1915 - 1979) as she sits in a chair, 1952. (Photo by PhotoQuest/Getty Images)

Portrait of American First Lady Mamie Eisenhower (born Mamie Geneva Doud, 1915 - 1979) as she sits in a chair, 1952. (Photo by PhotoQuest/Getty Images)

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circa 1916: Portrait of American politician and soldier Dwight D. Eisenhower (1890-1969) and his wife, Mamie (1896 - 1979), San Antonio, Texas. The future president Eisenhower had just been made second lieutenant in the US Army. (Photo by Hulton Archive/Getty Images)

circa 1916:  Portrait of American politician and soldier Dwight D. Eisenhower (1890-1969) and his wife, Mamie (1896 - 1979), San Antonio, Texas. The future president Eisenhower had just been made second lieutenant in the US Army.  (Photo by Hulton Archive/Getty Images)

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38th wedding anniversary portrait of Mamie (1896 ? 1979) and Dwight D. Eisenhower (1890 - 1969), the American First Lady and President, as they sit on a bench on the lawn of the White House, 1954. (Photo by Stock Montage/Getty Images)

38th wedding anniversary portrait of Mamie (1896 ? 1979) and Dwight D. Eisenhower (1890 - 1969), the American First Lady and President, as they sit on a bench on the lawn of the White House, 1954. (Photo by Stock Montage/Getty Images)

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US President Dwight Eisenhower (1890 - 1965) (right) and First Lady Mamie Eisenhower (1915 - 1979) wave as they leave a church service, Washington DC, Spring 1956. American photographer Abbie Rowe (1905 - 1967) is visible between them in the background. (Photo by PhotoQuest/Getty Images)

US President Dwight Eisenhower (1890 - 1965) (right) and First Lady Mamie Eisenhower (1915 - 1979) wave as they leave a church service, Washington DC, Spring 1956. American photographer Abbie Rowe (1905 - 1967) is visible between them in the background. (Photo by PhotoQuest/Getty Images)