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1962: Headshot of Vice President Lyndon B. Johnson's wife, Lady Bird, wearing a pearl necklace and a rose brooch on her sweater. (Photo by Hulton Archive/Getty Images)

1962:  Headshot of Vice President Lyndon B. Johnson's wife, Lady Bird, wearing a pearl necklace and a rose brooch on her sweater.  (Photo by Hulton Archive/Getty Images)

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Portrait of United States First Lady Clauda 'Lady Bird' Johnson, wife of Lyndon Johnson, wearing pearls, 1963. (Photo by Afro American Newspapers/Gado/Getty Images)

Portrait of United States First Lady Clauda 'Lady Bird' Johnson, wife of Lyndon Johnson, wearing pearls, 1963. (Photo by Afro American Newspapers/Gado/Getty Images)

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American President Lyndon Baines Johnson (1908 - 1973) and his wife, First Lady Lady Bird Johnson (born Claudia Alta Taylor, 1912 - 2007) pose seated atop a fence at their ranch, Johnson City, Texas, 1963 (Photo by PhotoQuest/Getty Images)

American President Lyndon Baines Johnson (1908 - 1973) and his wife, First Lady Lady Bird Johnson (born Claudia Alta Taylor, 1912 - 2007) pose seated atop a fence at their ranch, Johnson City, Texas, 1963 (Photo by PhotoQuest/Getty Images)

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circa 1965: Full-length formal portrait of American First Lady Claudia 'Lady Bird' Johnson, nee Claudia Alta Taylor, wearing a yellow gown with long white gloves, in front of a window with a view of the Washington Monument, White House, Washington, DC. (Photo by Hulton Archive/Getty Images)

circa 1965:  Full-length formal portrait of American First Lady Claudia 'Lady Bird' Johnson, nee Claudia Alta Taylor, wearing a yellow gown with long white gloves, in front of a window with a view of the Washington Monument, White House, Washington, DC.  (Photo by Hulton Archive/Getty Images)

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United States First Lady Claudia 'Lady Bird' Johnson meets with students at a school as part of a tour to support her husband's War on Poverty Head Start educational program, Cleveland, Ohio, August 21, 1965. (Photo by Afro American Newspapers/Gado/Getty Images)

United States First Lady Claudia 'Lady Bird' Johnson meets with students at a school as part of a tour to support her husband's War on Poverty Head Start educational program, Cleveland, Ohio, August 21, 1965. (Photo by Afro American Newspapers/Gado/Getty Images)