The Castleton Historical Society will host a program on America's early school slate industry which began right here in the Slate Valley. Dale and Joan Prouty, long time area educators and museum programmers, take us back to a simpler time before paper and batteries in their presentation, 'Nineteenth Century Tablets-Schoolhouse Slates', on Wednesday, June 21st at 6 PM at the Castleton Community Center. Please join us for this free, handicapped accessible program. Refreshments will be served. Questions? Call Holly at 468-5105 (We're trying again -- this program was snowed out in late November.)