A review of the First Ladies since Eleanor Roosevelt. "The job," says host Mike Wallace, "has evolved from a ceremonial backdrop into a vital presence on the world stage." Included: assessments of the First Ladies by historian Doris Kearns Goodwin; excerpts from CBS interviews with First Ladies Jacqueline Kennedy, Lady Bird Johnson, Pat Nixon, Betty Ford, Rosalynn Carter, Nancy Reagan, Barbara Bush and Hillary Rodham Clinton.