Kennedy's assassination and LBJ's handling of the transition; gallbladder removal; LBJ's display of his surgery scar to reporters; trip to Nicaragua; LBJ's throat surgery and hernia repair; LBJ's attempt to make Hurst White House physician; rehabilitation for heart attack patients; 10-4-67 meeting with Mrs. Johnson regarding LBJ's health; LBJ's decision not to run in 1968; LBJ's smoking habit; LBJ's weight; angina pectoris, February 1970; treatment strategy for LBJ's heart problems