I realize this if off topic, but I wonder if anyone on this list knows how one would go about refinishing the surface of a real slate chalkboard that is at least 60 years old. Nora -- Always on the prowl for ancestors: Avery, Dawson, Richardson, McMellon, Hutson, VanMeter, Manley, Brubaker, Ingalls, Farner, Morrow, Evans, Naugle....just to name a few.