Richard Nixon visits LBJ for morning coffee; Nixon and LBJ discuss New York Times, Westmoreland, China and Vietnam, and upcoming campaign year; LBJ teases Lady Bird about Big Bend trip; LBJ has sore throat; Johnsons to St. Marks Church; LBJ gives generous check to preacher, Bill Baster; Lady Bird and Jake Pickle discuss 10th District; Johnsons watch television; dinner with friends