sentences:  Letitia Baldrige
  
  Letitia "Tish" Baldrige (February 9, 1926 – October 29, 2012) was an American etiquette expert, public relations executive and author who was most famous for serving as Jacqueline Kennedy's Social Secretary.Known as the "Doyenne of Decorum", she wrote a newspaper column, ran her own PR firm, and, along with updating Amy Vanderbilt's "Complete Book of Etiquette", she published 20 books and appeared on "Late Night with David Letterman" and the cover of "Time" magazine.