The Windham Festival Chamber Orchestra returns to the Doctorow Center for a Thanksgiving weekend concert, including Ralph Vaughan Williams: Variants on Dives and Lazarus for Strings & Harp; Sir Edward Elgar: Sospiri for Strings & Harp; Claude Debussy: Danses sacrée et profane for Harp & String Orchestra; Robert Manno: Petit Voyage en Nostalgie for Flute, Harp & String Orchestra; Howard Hanson:…