Celebrate Halloween at the National Historic Landmark Mansion of the Ukrainian Institute of America. Are the faceless spirits of the past still lurking within this magnificent French Gothic turn of the century mansion? Join the Costume Ball and find out. Saturday, October 27, 9PM – 2AM   2 East 79th Street, New York, NY Open bar | Hors d’oeuvres | Music by DJ jetsol Best Costume Prize and other surprises…