Remembering History: Four first ladies ~ Former First Ladies (from left to right) Rosalynn Carter, Hillary Clinton, Barbara Bush and Laura Bush at the dedication of the William J. Clinton Presidential Center and Park in 2004.

Four first ladies ~ Former First Ladies (from left to right) Rosalynn Carter, Hillary Clinton, Barbara Bush and Laura Bush at the dedication of the William J. Clinton Presidential Center and Park in 2004.

Four first ladies ~ Former First Ladies (from left to right) Rosalynn Carter, Hillary Clinton, Barbara Bush and Laura Bush at the dedication of the William J. Clinton Presidential Center and Park in 2004.