Lady Bird and Mary Lasker to Smithsonian to choose artwork for the White House; Lady Bird makes appointment for visit to National Gallery; Society for Preservation of the White House; dinner for the McGeorge Bundys, Jack Valenti, Ted Sorenson and date, and Joe Alsop; Mrs. Paul Mellon and the flowers for the White House; Joe Alsop's gift of "The Silent Earth" book; to the White House theater to see "Mr. President" and "Tom Jones"