Who succeeded Lyndon B. Johnson as President of the United States?

Under which president did Lyndon B. Johnson serve as Vice President? Who was First Lady during John F. Kennedy's presidency? Jacqueline Kennedy was married to which president? Which number president was Lyndon B. Johnson? Which political party did President Lyndon B. Johnson belong to? Which president served from 1963 to 1969? In what year did Lyndon B. Johnson first take office as President? Who served as Vice President under Lyndon B. Johnson?