Guest Stars Robert Vaughn as Woodrow Wilson Claire Bloom as Edith Bolling Galt Wilson Barbara Barrie as Mamie Eisenhower George Kennedy as Warren G. Harding Ed Flanders as Calvin Coolidge Harry Morgan as Harry S. Truman Victor Buono as William Howard Taft John Anderson as Franklin D. Roosevelt Estelle Parsons as Bess Truman Lee Grant as Grace Coolidge Kim Hunter as Ellen Axson Wilson Andrew Duggan as Dwight D. Eisenhower Celeste Holm as Florence Harding Eileen Heckart as Eleanor Roosevelt Jan Sterling as Lou Hoover Larry Gates as Herbert Hoover Julie Harris as Helen (Nellie) Taft