NOW THROUGH NOVEMBER 29 at the Duck Hollow Museum of Art: “The Elevation of the Mundane: 16th-Century Works by the Guelders Guild of Guilders.” That is, the Guilders Gild of Gelders. Or, rather, the Gelders Gild of Guilders. The Guelders Geld of Gilders. The Gilders Guild of Gilders. The Guelders Gild of Guilders. The Guilders Geld of Gilders. The Gilders…oh, forget it.