LBJ and Lady Bird drive to Reagan Ranch; Johnsons to St. Francis Xavier Church; drive to Martin and Danz Ranches; Lady Bird goes wildflower hunting and spreads wildflower seed; lunch; Lady Bird rests; LBJ rides with guests; 15 people in two cars to the Reagan Ranch; Lady Bird and John Hill talk about Indian Cave drawings; Lady Bird describes deer, longhorns and buffalo; Lady Bird visits with Luci; upcoming 17-day trip