John Gronouski sworn as Ambassador to Poland and Larry O'Brien as Postmaster General; press invited into LBJ ranch house for tour; swearing-in ceremony at Hye Post Office; story of LBJ jumping in cotton at gin and playing baseball; LBJ mailed first letter to grandmother at Hye Post Office; guests to boyhood home and LBJ Ranch for lunch; Gronouski on Poland and Red China; Johnsons & guests to Danz place--car is stuck in mud; Lady Bird takes nap & talks to daughters; foreign affairs