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