Priscilla McMillan, Who Knew Both Kennedy and Oswald, Dies at 92 A Cold War scholar, she met Oswald four years before Kennedy’s assassination and later wrote “Marina and Lee,” a book about him and his Russian wife. Priscilla Johnson McMillan in Moscow in an undated photo. She interviewed Lee Harvey Oswald there in 1959 about why he was defecting to the Soviet Union.Credit...via Johnson family July 13, 2021, 5:41 p.m. ET Priscilla Johnson McMillan, believed to be the only person to have conversed extensively with both John F. Kennedy and his assassin, Lee Harvey Oswald, died on July 7 at her home in Cambridge, Mass. She was 92.