Presidents and First Ladies Trivia

[Rogerm]

I am going to second the choice of Richard Nixon, because I know that Lyndon Johnson and Harry Truman died while he was in office. But, I can't think of the third person.

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I believe that the third former president to have died during Richard Nixon's presidency was Dwight Eisenhower, because he died in 1969, which would have been at the beginning of Nixon's first term.