John F. Kennedy's closest aide was the queen of conspiracy theorists. Evelyn Lincoln, his personal secretary, wrote down a list of suspects in her beloved boss' assassination — and it included both Lyndon Johnson and Richard Nixon. The never-before-seen personal note, scribbled by Lincoln as she sat aboard Air Force One returning to Washington on the day of JFK's death, lists those she thought might be behind the president's murder. The note, estimated to be worth $30,000, is now on the auction block. Her note listed "Lyndon, KKK, Dixiecrats, [Teamsters boss Jimmy] Hoffa, [the] John Birch Society, Nixon, [South Vietnam President Ngo Dinh] Diem,Rightist, CIA in Cuban fiasco, Dictators [and] Communists."