Which president served from 1963 to 1969?

Jacqueline Kennedy was married to which president? Which number president was Lyndon B. Johnson? Who succeeded Lyndon B. Johnson as President of the United States? Which political party did President Lyndon B. Johnson belong to? In what year did Lyndon B. Johnson first take office as President? Who served as Vice President under Lyndon B. Johnson? Under which president did Hubert Humphrey serve as Vice President? Who was First Lady during Lyndon B. Johnson's presidency?